763a0dc792
Convert to use folio, so that we can get rid of 'page->index' to prepare for removal of 'index' field in structure page [1]. [1] https://lore.kernel.org/all/Zp8fgUSIBGQ1TN0D@casper.infradead.org/ Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
1966 lines
48 KiB
C
1966 lines
48 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* fs/f2fs/checkpoint.c
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*/
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#include <linux/fs.h>
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#include <linux/bio.h>
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#include <linux/mpage.h>
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#include <linux/writeback.h>
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#include <linux/blkdev.h>
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#include <linux/f2fs_fs.h>
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#include <linux/pagevec.h>
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#include <linux/swap.h>
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#include <linux/kthread.h>
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#include "f2fs.h"
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#include "node.h"
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#include "segment.h"
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#include "iostat.h"
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#include <trace/events/f2fs.h>
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#define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
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static struct kmem_cache *ino_entry_slab;
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struct kmem_cache *f2fs_inode_entry_slab;
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void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io,
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unsigned char reason)
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{
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f2fs_build_fault_attr(sbi, 0, 0);
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if (!end_io)
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f2fs_flush_merged_writes(sbi);
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f2fs_handle_critical_error(sbi, reason, end_io);
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}
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/*
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* We guarantee no failure on the returned page.
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*/
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struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
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{
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struct address_space *mapping = META_MAPPING(sbi);
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struct page *page;
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repeat:
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page = f2fs_grab_cache_page(mapping, index, false);
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if (!page) {
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cond_resched();
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goto repeat;
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}
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f2fs_wait_on_page_writeback(page, META, true, true);
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if (!PageUptodate(page))
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SetPageUptodate(page);
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return page;
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}
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static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
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bool is_meta)
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{
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struct address_space *mapping = META_MAPPING(sbi);
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struct page *page;
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struct f2fs_io_info fio = {
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.sbi = sbi,
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.type = META,
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.op = REQ_OP_READ,
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.op_flags = REQ_META | REQ_PRIO,
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.old_blkaddr = index,
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.new_blkaddr = index,
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.encrypted_page = NULL,
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.is_por = !is_meta ? 1 : 0,
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};
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int err;
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if (unlikely(!is_meta))
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fio.op_flags &= ~REQ_META;
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repeat:
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page = f2fs_grab_cache_page(mapping, index, false);
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if (!page) {
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cond_resched();
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goto repeat;
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}
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if (PageUptodate(page))
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goto out;
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fio.page = page;
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err = f2fs_submit_page_bio(&fio);
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if (err) {
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f2fs_put_page(page, 1);
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return ERR_PTR(err);
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}
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f2fs_update_iostat(sbi, NULL, FS_META_READ_IO, F2FS_BLKSIZE);
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lock_page(page);
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if (unlikely(page->mapping != mapping)) {
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f2fs_put_page(page, 1);
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goto repeat;
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}
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if (unlikely(!PageUptodate(page))) {
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f2fs_handle_page_eio(sbi, page_folio(page), META);
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f2fs_put_page(page, 1);
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return ERR_PTR(-EIO);
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}
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out:
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return page;
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}
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struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
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{
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return __get_meta_page(sbi, index, true);
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}
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struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index)
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{
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struct page *page;
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int count = 0;
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retry:
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page = __get_meta_page(sbi, index, true);
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if (IS_ERR(page)) {
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if (PTR_ERR(page) == -EIO &&
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++count <= DEFAULT_RETRY_IO_COUNT)
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goto retry;
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f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_META_PAGE);
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}
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return page;
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}
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/* for POR only */
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struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)
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{
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return __get_meta_page(sbi, index, false);
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}
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static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr,
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int type)
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{
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struct seg_entry *se;
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unsigned int segno, offset;
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bool exist;
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if (type == DATA_GENERIC)
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return true;
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segno = GET_SEGNO(sbi, blkaddr);
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offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
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se = get_seg_entry(sbi, segno);
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exist = f2fs_test_bit(offset, se->cur_valid_map);
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/* skip data, if we already have an error in checkpoint. */
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if (unlikely(f2fs_cp_error(sbi)))
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return exist;
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if ((exist && type == DATA_GENERIC_ENHANCE_UPDATE) ||
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(!exist && type == DATA_GENERIC_ENHANCE))
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goto out_err;
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if (!exist && type != DATA_GENERIC_ENHANCE_UPDATE)
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goto out_handle;
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return exist;
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out_err:
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f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
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blkaddr, exist);
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set_sbi_flag(sbi, SBI_NEED_FSCK);
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dump_stack();
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out_handle:
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f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
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return exist;
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}
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static bool __f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
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block_t blkaddr, int type)
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{
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switch (type) {
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case META_NAT:
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break;
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case META_SIT:
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if (unlikely(blkaddr >= SIT_BLK_CNT(sbi)))
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goto check_only;
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break;
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case META_SSA:
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if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) ||
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blkaddr < SM_I(sbi)->ssa_blkaddr))
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goto check_only;
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break;
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case META_CP:
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if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr ||
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blkaddr < __start_cp_addr(sbi)))
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goto check_only;
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break;
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case META_POR:
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if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
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blkaddr < MAIN_BLKADDR(sbi)))
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goto check_only;
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break;
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case DATA_GENERIC:
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case DATA_GENERIC_ENHANCE:
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case DATA_GENERIC_ENHANCE_READ:
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case DATA_GENERIC_ENHANCE_UPDATE:
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if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
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blkaddr < MAIN_BLKADDR(sbi))) {
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/* Skip to emit an error message. */
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if (unlikely(f2fs_cp_error(sbi)))
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return false;
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f2fs_warn(sbi, "access invalid blkaddr:%u",
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blkaddr);
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set_sbi_flag(sbi, SBI_NEED_FSCK);
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dump_stack();
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goto err;
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} else {
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return __is_bitmap_valid(sbi, blkaddr, type);
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}
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break;
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case META_GENERIC:
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if (unlikely(blkaddr < SEG0_BLKADDR(sbi) ||
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blkaddr >= MAIN_BLKADDR(sbi)))
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goto err;
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break;
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default:
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BUG();
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}
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return true;
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err:
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f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
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check_only:
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return false;
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}
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bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
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block_t blkaddr, int type)
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{
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if (time_to_inject(sbi, FAULT_BLKADDR_VALIDITY))
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return false;
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return __f2fs_is_valid_blkaddr(sbi, blkaddr, type);
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}
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bool f2fs_is_valid_blkaddr_raw(struct f2fs_sb_info *sbi,
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block_t blkaddr, int type)
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{
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return __f2fs_is_valid_blkaddr(sbi, blkaddr, type);
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}
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/*
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* Readahead CP/NAT/SIT/SSA/POR pages
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*/
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int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
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int type, bool sync)
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{
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struct page *page;
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block_t blkno = start;
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struct f2fs_io_info fio = {
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.sbi = sbi,
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.type = META,
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.op = REQ_OP_READ,
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.op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD,
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.encrypted_page = NULL,
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.in_list = 0,
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.is_por = (type == META_POR) ? 1 : 0,
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};
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struct blk_plug plug;
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int err;
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if (unlikely(type == META_POR))
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fio.op_flags &= ~REQ_META;
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blk_start_plug(&plug);
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for (; nrpages-- > 0; blkno++) {
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if (!f2fs_is_valid_blkaddr(sbi, blkno, type))
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goto out;
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switch (type) {
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case META_NAT:
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if (unlikely(blkno >=
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NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid)))
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blkno = 0;
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/* get nat block addr */
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fio.new_blkaddr = current_nat_addr(sbi,
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blkno * NAT_ENTRY_PER_BLOCK);
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break;
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case META_SIT:
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if (unlikely(blkno >= TOTAL_SEGS(sbi)))
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goto out;
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/* get sit block addr */
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fio.new_blkaddr = current_sit_addr(sbi,
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blkno * SIT_ENTRY_PER_BLOCK);
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break;
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case META_SSA:
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case META_CP:
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case META_POR:
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fio.new_blkaddr = blkno;
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break;
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default:
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BUG();
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}
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page = f2fs_grab_cache_page(META_MAPPING(sbi),
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fio.new_blkaddr, false);
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if (!page)
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continue;
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if (PageUptodate(page)) {
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f2fs_put_page(page, 1);
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continue;
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}
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fio.page = page;
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err = f2fs_submit_page_bio(&fio);
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f2fs_put_page(page, err ? 1 : 0);
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if (!err)
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f2fs_update_iostat(sbi, NULL, FS_META_READ_IO,
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F2FS_BLKSIZE);
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}
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out:
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blk_finish_plug(&plug);
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return blkno - start;
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}
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void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index,
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unsigned int ra_blocks)
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{
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struct page *page;
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bool readahead = false;
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if (ra_blocks == RECOVERY_MIN_RA_BLOCKS)
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return;
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page = find_get_page(META_MAPPING(sbi), index);
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if (!page || !PageUptodate(page))
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readahead = true;
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f2fs_put_page(page, 0);
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if (readahead)
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f2fs_ra_meta_pages(sbi, index, ra_blocks, META_POR, true);
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}
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static int __f2fs_write_meta_page(struct page *page,
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struct writeback_control *wbc,
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enum iostat_type io_type)
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{
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struct f2fs_sb_info *sbi = F2FS_P_SB(page);
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struct folio *folio = page_folio(page);
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trace_f2fs_writepage(folio, META);
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if (unlikely(f2fs_cp_error(sbi))) {
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if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) {
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folio_clear_uptodate(folio);
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dec_page_count(sbi, F2FS_DIRTY_META);
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folio_unlock(folio);
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return 0;
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}
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goto redirty_out;
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}
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if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
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goto redirty_out;
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if (wbc->for_reclaim && folio->index < GET_SUM_BLOCK(sbi, 0))
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goto redirty_out;
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f2fs_do_write_meta_page(sbi, folio, io_type);
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dec_page_count(sbi, F2FS_DIRTY_META);
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if (wbc->for_reclaim)
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f2fs_submit_merged_write_cond(sbi, NULL, page, 0, META);
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folio_unlock(folio);
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if (unlikely(f2fs_cp_error(sbi)))
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f2fs_submit_merged_write(sbi, META);
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return 0;
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redirty_out:
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redirty_page_for_writepage(wbc, page);
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return AOP_WRITEPAGE_ACTIVATE;
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}
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static int f2fs_write_meta_page(struct page *page,
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struct writeback_control *wbc)
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{
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return __f2fs_write_meta_page(page, wbc, FS_META_IO);
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}
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static int f2fs_write_meta_pages(struct address_space *mapping,
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struct writeback_control *wbc)
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{
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struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
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long diff, written;
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if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
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goto skip_write;
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/* collect a number of dirty meta pages and write together */
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if (wbc->sync_mode != WB_SYNC_ALL &&
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get_pages(sbi, F2FS_DIRTY_META) <
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nr_pages_to_skip(sbi, META))
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goto skip_write;
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/* if locked failed, cp will flush dirty pages instead */
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if (!f2fs_down_write_trylock(&sbi->cp_global_sem))
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goto skip_write;
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trace_f2fs_writepages(mapping->host, wbc, META);
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diff = nr_pages_to_write(sbi, META, wbc);
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written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO);
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f2fs_up_write(&sbi->cp_global_sem);
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wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff);
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return 0;
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skip_write:
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wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META);
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trace_f2fs_writepages(mapping->host, wbc, META);
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return 0;
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}
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long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
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long nr_to_write, enum iostat_type io_type)
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{
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struct address_space *mapping = META_MAPPING(sbi);
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pgoff_t index = 0, prev = ULONG_MAX;
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struct folio_batch fbatch;
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long nwritten = 0;
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int nr_folios;
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struct writeback_control wbc = {
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.for_reclaim = 0,
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};
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struct blk_plug plug;
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folio_batch_init(&fbatch);
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blk_start_plug(&plug);
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while ((nr_folios = filemap_get_folios_tag(mapping, &index,
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(pgoff_t)-1,
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PAGECACHE_TAG_DIRTY, &fbatch))) {
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int i;
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for (i = 0; i < nr_folios; i++) {
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struct folio *folio = fbatch.folios[i];
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if (nr_to_write != LONG_MAX && i != 0 &&
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folio->index != prev +
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folio_nr_pages(fbatch.folios[i-1])) {
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folio_batch_release(&fbatch);
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goto stop;
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}
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folio_lock(folio);
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if (unlikely(folio->mapping != mapping)) {
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continue_unlock:
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folio_unlock(folio);
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continue;
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}
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if (!folio_test_dirty(folio)) {
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/* someone wrote it for us */
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goto continue_unlock;
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}
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f2fs_wait_on_page_writeback(&folio->page, META,
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true, true);
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if (!folio_clear_dirty_for_io(folio))
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goto continue_unlock;
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if (__f2fs_write_meta_page(&folio->page, &wbc,
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io_type)) {
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folio_unlock(folio);
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break;
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}
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nwritten += folio_nr_pages(folio);
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prev = folio->index;
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if (unlikely(nwritten >= nr_to_write))
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break;
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}
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folio_batch_release(&fbatch);
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cond_resched();
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}
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stop:
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if (nwritten)
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f2fs_submit_merged_write(sbi, type);
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blk_finish_plug(&plug);
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return nwritten;
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}
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static bool f2fs_dirty_meta_folio(struct address_space *mapping,
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struct folio *folio)
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{
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trace_f2fs_set_page_dirty(folio, META);
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if (!folio_test_uptodate(folio))
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folio_mark_uptodate(folio);
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if (filemap_dirty_folio(mapping, folio)) {
|
|
inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_META);
|
|
set_page_private_reference(&folio->page);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
const struct address_space_operations f2fs_meta_aops = {
|
|
.writepage = f2fs_write_meta_page,
|
|
.writepages = f2fs_write_meta_pages,
|
|
.dirty_folio = f2fs_dirty_meta_folio,
|
|
.invalidate_folio = f2fs_invalidate_folio,
|
|
.release_folio = f2fs_release_folio,
|
|
.migrate_folio = filemap_migrate_folio,
|
|
};
|
|
|
|
static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino,
|
|
unsigned int devidx, int type)
|
|
{
|
|
struct inode_management *im = &sbi->im[type];
|
|
struct ino_entry *e = NULL, *new = NULL;
|
|
|
|
if (type == FLUSH_INO) {
|
|
rcu_read_lock();
|
|
e = radix_tree_lookup(&im->ino_root, ino);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
retry:
|
|
if (!e)
|
|
new = f2fs_kmem_cache_alloc(ino_entry_slab,
|
|
GFP_NOFS, true, NULL);
|
|
|
|
radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
|
|
|
|
spin_lock(&im->ino_lock);
|
|
e = radix_tree_lookup(&im->ino_root, ino);
|
|
if (!e) {
|
|
if (!new) {
|
|
spin_unlock(&im->ino_lock);
|
|
radix_tree_preload_end();
|
|
goto retry;
|
|
}
|
|
e = new;
|
|
if (unlikely(radix_tree_insert(&im->ino_root, ino, e)))
|
|
f2fs_bug_on(sbi, 1);
|
|
|
|
memset(e, 0, sizeof(struct ino_entry));
|
|
e->ino = ino;
|
|
|
|
list_add_tail(&e->list, &im->ino_list);
|
|
if (type != ORPHAN_INO)
|
|
im->ino_num++;
|
|
}
|
|
|
|
if (type == FLUSH_INO)
|
|
f2fs_set_bit(devidx, (char *)&e->dirty_device);
|
|
|
|
spin_unlock(&im->ino_lock);
|
|
radix_tree_preload_end();
|
|
|
|
if (new && e != new)
|
|
kmem_cache_free(ino_entry_slab, new);
|
|
}
|
|
|
|
static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
|
|
{
|
|
struct inode_management *im = &sbi->im[type];
|
|
struct ino_entry *e;
|
|
|
|
spin_lock(&im->ino_lock);
|
|
e = radix_tree_lookup(&im->ino_root, ino);
|
|
if (e) {
|
|
list_del(&e->list);
|
|
radix_tree_delete(&im->ino_root, ino);
|
|
im->ino_num--;
|
|
spin_unlock(&im->ino_lock);
|
|
kmem_cache_free(ino_entry_slab, e);
|
|
return;
|
|
}
|
|
spin_unlock(&im->ino_lock);
|
|
}
|
|
|
|
void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
|
|
{
|
|
/* add new dirty ino entry into list */
|
|
__add_ino_entry(sbi, ino, 0, type);
|
|
}
|
|
|
|
void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
|
|
{
|
|
/* remove dirty ino entry from list */
|
|
__remove_ino_entry(sbi, ino, type);
|
|
}
|
|
|
|
/* mode should be APPEND_INO, UPDATE_INO or TRANS_DIR_INO */
|
|
bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
|
|
{
|
|
struct inode_management *im = &sbi->im[mode];
|
|
struct ino_entry *e;
|
|
|
|
spin_lock(&im->ino_lock);
|
|
e = radix_tree_lookup(&im->ino_root, ino);
|
|
spin_unlock(&im->ino_lock);
|
|
return e ? true : false;
|
|
}
|
|
|
|
void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all)
|
|
{
|
|
struct ino_entry *e, *tmp;
|
|
int i;
|
|
|
|
for (i = all ? ORPHAN_INO : APPEND_INO; i < MAX_INO_ENTRY; i++) {
|
|
struct inode_management *im = &sbi->im[i];
|
|
|
|
spin_lock(&im->ino_lock);
|
|
list_for_each_entry_safe(e, tmp, &im->ino_list, list) {
|
|
list_del(&e->list);
|
|
radix_tree_delete(&im->ino_root, e->ino);
|
|
kmem_cache_free(ino_entry_slab, e);
|
|
im->ino_num--;
|
|
}
|
|
spin_unlock(&im->ino_lock);
|
|
}
|
|
}
|
|
|
|
void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
|
|
unsigned int devidx, int type)
|
|
{
|
|
__add_ino_entry(sbi, ino, devidx, type);
|
|
}
|
|
|
|
bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
|
|
unsigned int devidx, int type)
|
|
{
|
|
struct inode_management *im = &sbi->im[type];
|
|
struct ino_entry *e;
|
|
bool is_dirty = false;
|
|
|
|
spin_lock(&im->ino_lock);
|
|
e = radix_tree_lookup(&im->ino_root, ino);
|
|
if (e && f2fs_test_bit(devidx, (char *)&e->dirty_device))
|
|
is_dirty = true;
|
|
spin_unlock(&im->ino_lock);
|
|
return is_dirty;
|
|
}
|
|
|
|
int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct inode_management *im = &sbi->im[ORPHAN_INO];
|
|
int err = 0;
|
|
|
|
spin_lock(&im->ino_lock);
|
|
|
|
if (time_to_inject(sbi, FAULT_ORPHAN)) {
|
|
spin_unlock(&im->ino_lock);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
if (unlikely(im->ino_num >= sbi->max_orphans))
|
|
err = -ENOSPC;
|
|
else
|
|
im->ino_num++;
|
|
spin_unlock(&im->ino_lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct inode_management *im = &sbi->im[ORPHAN_INO];
|
|
|
|
spin_lock(&im->ino_lock);
|
|
f2fs_bug_on(sbi, im->ino_num == 0);
|
|
im->ino_num--;
|
|
spin_unlock(&im->ino_lock);
|
|
}
|
|
|
|
void f2fs_add_orphan_inode(struct inode *inode)
|
|
{
|
|
/* add new orphan ino entry into list */
|
|
__add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO);
|
|
f2fs_update_inode_page(inode);
|
|
}
|
|
|
|
void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
|
|
{
|
|
/* remove orphan entry from orphan list */
|
|
__remove_ino_entry(sbi, ino, ORPHAN_INO);
|
|
}
|
|
|
|
static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
|
|
{
|
|
struct inode *inode;
|
|
struct node_info ni;
|
|
int err;
|
|
|
|
inode = f2fs_iget_retry(sbi->sb, ino);
|
|
if (IS_ERR(inode)) {
|
|
/*
|
|
* there should be a bug that we can't find the entry
|
|
* to orphan inode.
|
|
*/
|
|
f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT);
|
|
return PTR_ERR(inode);
|
|
}
|
|
|
|
err = f2fs_dquot_initialize(inode);
|
|
if (err) {
|
|
iput(inode);
|
|
goto err_out;
|
|
}
|
|
|
|
clear_nlink(inode);
|
|
|
|
/* truncate all the data during iput */
|
|
iput(inode);
|
|
|
|
err = f2fs_get_node_info(sbi, ino, &ni, false);
|
|
if (err)
|
|
goto err_out;
|
|
|
|
/* ENOMEM was fully retried in f2fs_evict_inode. */
|
|
if (ni.blk_addr != NULL_ADDR) {
|
|
err = -EIO;
|
|
goto err_out;
|
|
}
|
|
return 0;
|
|
|
|
err_out:
|
|
set_sbi_flag(sbi, SBI_NEED_FSCK);
|
|
f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.",
|
|
__func__, ino);
|
|
return err;
|
|
}
|
|
|
|
int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)
|
|
{
|
|
block_t start_blk, orphan_blocks, i, j;
|
|
int err = 0;
|
|
|
|
if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG))
|
|
return 0;
|
|
|
|
if (f2fs_hw_is_readonly(sbi)) {
|
|
f2fs_info(sbi, "write access unavailable, skipping orphan cleanup");
|
|
return 0;
|
|
}
|
|
|
|
if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE))
|
|
f2fs_info(sbi, "orphan cleanup on readonly fs");
|
|
|
|
start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi);
|
|
orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi);
|
|
|
|
f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true);
|
|
|
|
for (i = 0; i < orphan_blocks; i++) {
|
|
struct page *page;
|
|
struct f2fs_orphan_block *orphan_blk;
|
|
|
|
page = f2fs_get_meta_page(sbi, start_blk + i);
|
|
if (IS_ERR(page)) {
|
|
err = PTR_ERR(page);
|
|
goto out;
|
|
}
|
|
|
|
orphan_blk = (struct f2fs_orphan_block *)page_address(page);
|
|
for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
|
|
nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
|
|
|
|
err = recover_orphan_inode(sbi, ino);
|
|
if (err) {
|
|
f2fs_put_page(page, 1);
|
|
goto out;
|
|
}
|
|
}
|
|
f2fs_put_page(page, 1);
|
|
}
|
|
/* clear Orphan Flag */
|
|
clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG);
|
|
out:
|
|
set_sbi_flag(sbi, SBI_IS_RECOVERED);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
|
|
{
|
|
struct list_head *head;
|
|
struct f2fs_orphan_block *orphan_blk = NULL;
|
|
unsigned int nentries = 0;
|
|
unsigned short index = 1;
|
|
unsigned short orphan_blocks;
|
|
struct page *page = NULL;
|
|
struct ino_entry *orphan = NULL;
|
|
struct inode_management *im = &sbi->im[ORPHAN_INO];
|
|
|
|
orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num);
|
|
|
|
/*
|
|
* we don't need to do spin_lock(&im->ino_lock) here, since all the
|
|
* orphan inode operations are covered under f2fs_lock_op().
|
|
* And, spin_lock should be avoided due to page operations below.
|
|
*/
|
|
head = &im->ino_list;
|
|
|
|
/* loop for each orphan inode entry and write them in journal block */
|
|
list_for_each_entry(orphan, head, list) {
|
|
if (!page) {
|
|
page = f2fs_grab_meta_page(sbi, start_blk++);
|
|
orphan_blk =
|
|
(struct f2fs_orphan_block *)page_address(page);
|
|
memset(orphan_blk, 0, sizeof(*orphan_blk));
|
|
}
|
|
|
|
orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino);
|
|
|
|
if (nentries == F2FS_ORPHANS_PER_BLOCK) {
|
|
/*
|
|
* an orphan block is full of 1020 entries,
|
|
* then we need to flush current orphan blocks
|
|
* and bring another one in memory
|
|
*/
|
|
orphan_blk->blk_addr = cpu_to_le16(index);
|
|
orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
|
|
orphan_blk->entry_count = cpu_to_le32(nentries);
|
|
set_page_dirty(page);
|
|
f2fs_put_page(page, 1);
|
|
index++;
|
|
nentries = 0;
|
|
page = NULL;
|
|
}
|
|
}
|
|
|
|
if (page) {
|
|
orphan_blk->blk_addr = cpu_to_le16(index);
|
|
orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
|
|
orphan_blk->entry_count = cpu_to_le32(nentries);
|
|
set_page_dirty(page);
|
|
f2fs_put_page(page, 1);
|
|
}
|
|
}
|
|
|
|
static __u32 f2fs_checkpoint_chksum(struct f2fs_sb_info *sbi,
|
|
struct f2fs_checkpoint *ckpt)
|
|
{
|
|
unsigned int chksum_ofs = le32_to_cpu(ckpt->checksum_offset);
|
|
__u32 chksum;
|
|
|
|
chksum = f2fs_crc32(sbi, ckpt, chksum_ofs);
|
|
if (chksum_ofs < CP_CHKSUM_OFFSET) {
|
|
chksum_ofs += sizeof(chksum);
|
|
chksum = f2fs_chksum(sbi, chksum, (__u8 *)ckpt + chksum_ofs,
|
|
F2FS_BLKSIZE - chksum_ofs);
|
|
}
|
|
return chksum;
|
|
}
|
|
|
|
static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,
|
|
struct f2fs_checkpoint **cp_block, struct page **cp_page,
|
|
unsigned long long *version)
|
|
{
|
|
size_t crc_offset = 0;
|
|
__u32 crc;
|
|
|
|
*cp_page = f2fs_get_meta_page(sbi, cp_addr);
|
|
if (IS_ERR(*cp_page))
|
|
return PTR_ERR(*cp_page);
|
|
|
|
*cp_block = (struct f2fs_checkpoint *)page_address(*cp_page);
|
|
|
|
crc_offset = le32_to_cpu((*cp_block)->checksum_offset);
|
|
if (crc_offset < CP_MIN_CHKSUM_OFFSET ||
|
|
crc_offset > CP_CHKSUM_OFFSET) {
|
|
f2fs_put_page(*cp_page, 1);
|
|
f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset);
|
|
return -EINVAL;
|
|
}
|
|
|
|
crc = f2fs_checkpoint_chksum(sbi, *cp_block);
|
|
if (crc != cur_cp_crc(*cp_block)) {
|
|
f2fs_put_page(*cp_page, 1);
|
|
f2fs_warn(sbi, "invalid crc value");
|
|
return -EINVAL;
|
|
}
|
|
|
|
*version = cur_cp_version(*cp_block);
|
|
return 0;
|
|
}
|
|
|
|
static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
|
|
block_t cp_addr, unsigned long long *version)
|
|
{
|
|
struct page *cp_page_1 = NULL, *cp_page_2 = NULL;
|
|
struct f2fs_checkpoint *cp_block = NULL;
|
|
unsigned long long cur_version = 0, pre_version = 0;
|
|
unsigned int cp_blocks;
|
|
int err;
|
|
|
|
err = get_checkpoint_version(sbi, cp_addr, &cp_block,
|
|
&cp_page_1, version);
|
|
if (err)
|
|
return NULL;
|
|
|
|
cp_blocks = le32_to_cpu(cp_block->cp_pack_total_block_count);
|
|
|
|
if (cp_blocks > BLKS_PER_SEG(sbi) || cp_blocks <= F2FS_CP_PACKS) {
|
|
f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u",
|
|
le32_to_cpu(cp_block->cp_pack_total_block_count));
|
|
goto invalid_cp;
|
|
}
|
|
pre_version = *version;
|
|
|
|
cp_addr += cp_blocks - 1;
|
|
err = get_checkpoint_version(sbi, cp_addr, &cp_block,
|
|
&cp_page_2, version);
|
|
if (err)
|
|
goto invalid_cp;
|
|
cur_version = *version;
|
|
|
|
if (cur_version == pre_version) {
|
|
*version = cur_version;
|
|
f2fs_put_page(cp_page_2, 1);
|
|
return cp_page_1;
|
|
}
|
|
f2fs_put_page(cp_page_2, 1);
|
|
invalid_cp:
|
|
f2fs_put_page(cp_page_1, 1);
|
|
return NULL;
|
|
}
|
|
|
|
int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_checkpoint *cp_block;
|
|
struct f2fs_super_block *fsb = sbi->raw_super;
|
|
struct page *cp1, *cp2, *cur_page;
|
|
unsigned long blk_size = sbi->blocksize;
|
|
unsigned long long cp1_version = 0, cp2_version = 0;
|
|
unsigned long long cp_start_blk_no;
|
|
unsigned int cp_blks = 1 + __cp_payload(sbi);
|
|
block_t cp_blk_no;
|
|
int i;
|
|
int err;
|
|
|
|
sbi->ckpt = f2fs_kvzalloc(sbi, array_size(blk_size, cp_blks),
|
|
GFP_KERNEL);
|
|
if (!sbi->ckpt)
|
|
return -ENOMEM;
|
|
/*
|
|
* Finding out valid cp block involves read both
|
|
* sets( cp pack 1 and cp pack 2)
|
|
*/
|
|
cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);
|
|
cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);
|
|
|
|
/* The second checkpoint pack should start at the next segment */
|
|
cp_start_blk_no += ((unsigned long long)1) <<
|
|
le32_to_cpu(fsb->log_blocks_per_seg);
|
|
cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version);
|
|
|
|
if (cp1 && cp2) {
|
|
if (ver_after(cp2_version, cp1_version))
|
|
cur_page = cp2;
|
|
else
|
|
cur_page = cp1;
|
|
} else if (cp1) {
|
|
cur_page = cp1;
|
|
} else if (cp2) {
|
|
cur_page = cp2;
|
|
} else {
|
|
err = -EFSCORRUPTED;
|
|
goto fail_no_cp;
|
|
}
|
|
|
|
cp_block = (struct f2fs_checkpoint *)page_address(cur_page);
|
|
memcpy(sbi->ckpt, cp_block, blk_size);
|
|
|
|
if (cur_page == cp1)
|
|
sbi->cur_cp_pack = 1;
|
|
else
|
|
sbi->cur_cp_pack = 2;
|
|
|
|
/* Sanity checking of checkpoint */
|
|
if (f2fs_sanity_check_ckpt(sbi)) {
|
|
err = -EFSCORRUPTED;
|
|
goto free_fail_no_cp;
|
|
}
|
|
|
|
if (cp_blks <= 1)
|
|
goto done;
|
|
|
|
cp_blk_no = le32_to_cpu(fsb->cp_blkaddr);
|
|
if (cur_page == cp2)
|
|
cp_blk_no += BIT(le32_to_cpu(fsb->log_blocks_per_seg));
|
|
|
|
for (i = 1; i < cp_blks; i++) {
|
|
void *sit_bitmap_ptr;
|
|
unsigned char *ckpt = (unsigned char *)sbi->ckpt;
|
|
|
|
cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i);
|
|
if (IS_ERR(cur_page)) {
|
|
err = PTR_ERR(cur_page);
|
|
goto free_fail_no_cp;
|
|
}
|
|
sit_bitmap_ptr = page_address(cur_page);
|
|
memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
|
|
f2fs_put_page(cur_page, 1);
|
|
}
|
|
done:
|
|
f2fs_put_page(cp1, 1);
|
|
f2fs_put_page(cp2, 1);
|
|
return 0;
|
|
|
|
free_fail_no_cp:
|
|
f2fs_put_page(cp1, 1);
|
|
f2fs_put_page(cp2, 1);
|
|
fail_no_cp:
|
|
kvfree(sbi->ckpt);
|
|
return err;
|
|
}
|
|
|
|
static void __add_dirty_inode(struct inode *inode, enum inode_type type)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
|
|
|
|
if (is_inode_flag_set(inode, flag))
|
|
return;
|
|
|
|
set_inode_flag(inode, flag);
|
|
list_add_tail(&F2FS_I(inode)->dirty_list, &sbi->inode_list[type]);
|
|
stat_inc_dirty_inode(sbi, type);
|
|
}
|
|
|
|
static void __remove_dirty_inode(struct inode *inode, enum inode_type type)
|
|
{
|
|
int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
|
|
|
|
if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag))
|
|
return;
|
|
|
|
list_del_init(&F2FS_I(inode)->dirty_list);
|
|
clear_inode_flag(inode, flag);
|
|
stat_dec_dirty_inode(F2FS_I_SB(inode), type);
|
|
}
|
|
|
|
void f2fs_update_dirty_folio(struct inode *inode, struct folio *folio)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
|
|
|
|
if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
|
|
!S_ISLNK(inode->i_mode))
|
|
return;
|
|
|
|
spin_lock(&sbi->inode_lock[type]);
|
|
if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH))
|
|
__add_dirty_inode(inode, type);
|
|
inode_inc_dirty_pages(inode);
|
|
spin_unlock(&sbi->inode_lock[type]);
|
|
|
|
set_page_private_reference(&folio->page);
|
|
}
|
|
|
|
void f2fs_remove_dirty_inode(struct inode *inode)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
|
|
|
|
if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
|
|
!S_ISLNK(inode->i_mode))
|
|
return;
|
|
|
|
if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH))
|
|
return;
|
|
|
|
spin_lock(&sbi->inode_lock[type]);
|
|
__remove_dirty_inode(inode, type);
|
|
spin_unlock(&sbi->inode_lock[type]);
|
|
}
|
|
|
|
int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type,
|
|
bool from_cp)
|
|
{
|
|
struct list_head *head;
|
|
struct inode *inode;
|
|
struct f2fs_inode_info *fi;
|
|
bool is_dir = (type == DIR_INODE);
|
|
unsigned long ino = 0;
|
|
|
|
trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir,
|
|
get_pages(sbi, is_dir ?
|
|
F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
|
|
retry:
|
|
if (unlikely(f2fs_cp_error(sbi))) {
|
|
trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
|
|
get_pages(sbi, is_dir ?
|
|
F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
|
|
return -EIO;
|
|
}
|
|
|
|
spin_lock(&sbi->inode_lock[type]);
|
|
|
|
head = &sbi->inode_list[type];
|
|
if (list_empty(head)) {
|
|
spin_unlock(&sbi->inode_lock[type]);
|
|
trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
|
|
get_pages(sbi, is_dir ?
|
|
F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
|
|
return 0;
|
|
}
|
|
fi = list_first_entry(head, struct f2fs_inode_info, dirty_list);
|
|
inode = igrab(&fi->vfs_inode);
|
|
spin_unlock(&sbi->inode_lock[type]);
|
|
if (inode) {
|
|
unsigned long cur_ino = inode->i_ino;
|
|
|
|
if (from_cp)
|
|
F2FS_I(inode)->cp_task = current;
|
|
F2FS_I(inode)->wb_task = current;
|
|
|
|
filemap_fdatawrite(inode->i_mapping);
|
|
|
|
F2FS_I(inode)->wb_task = NULL;
|
|
if (from_cp)
|
|
F2FS_I(inode)->cp_task = NULL;
|
|
|
|
iput(inode);
|
|
/* We need to give cpu to another writers. */
|
|
if (ino == cur_ino)
|
|
cond_resched();
|
|
else
|
|
ino = cur_ino;
|
|
} else {
|
|
/*
|
|
* We should submit bio, since it exists several
|
|
* writebacking dentry pages in the freeing inode.
|
|
*/
|
|
f2fs_submit_merged_write(sbi, DATA);
|
|
cond_resched();
|
|
}
|
|
goto retry;
|
|
}
|
|
|
|
static int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct list_head *head = &sbi->inode_list[DIRTY_META];
|
|
struct inode *inode;
|
|
struct f2fs_inode_info *fi;
|
|
s64 total = get_pages(sbi, F2FS_DIRTY_IMETA);
|
|
|
|
while (total--) {
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
return -EIO;
|
|
|
|
spin_lock(&sbi->inode_lock[DIRTY_META]);
|
|
if (list_empty(head)) {
|
|
spin_unlock(&sbi->inode_lock[DIRTY_META]);
|
|
return 0;
|
|
}
|
|
fi = list_first_entry(head, struct f2fs_inode_info,
|
|
gdirty_list);
|
|
inode = igrab(&fi->vfs_inode);
|
|
spin_unlock(&sbi->inode_lock[DIRTY_META]);
|
|
if (inode) {
|
|
sync_inode_metadata(inode, 0);
|
|
|
|
/* it's on eviction */
|
|
if (is_inode_flag_set(inode, FI_DIRTY_INODE))
|
|
f2fs_update_inode_page(inode);
|
|
iput(inode);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void __prepare_cp_block(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
nid_t last_nid = nm_i->next_scan_nid;
|
|
|
|
next_free_nid(sbi, &last_nid);
|
|
ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi));
|
|
ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi));
|
|
ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi));
|
|
ckpt->next_free_nid = cpu_to_le32(last_nid);
|
|
|
|
/* update user_block_counts */
|
|
sbi->last_valid_block_count = sbi->total_valid_block_count;
|
|
percpu_counter_set(&sbi->alloc_valid_block_count, 0);
|
|
percpu_counter_set(&sbi->rf_node_block_count, 0);
|
|
}
|
|
|
|
static bool __need_flush_quota(struct f2fs_sb_info *sbi)
|
|
{
|
|
bool ret = false;
|
|
|
|
if (!is_journalled_quota(sbi))
|
|
return false;
|
|
|
|
if (!f2fs_down_write_trylock(&sbi->quota_sem))
|
|
return true;
|
|
if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) {
|
|
ret = false;
|
|
} else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) {
|
|
ret = false;
|
|
} else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) {
|
|
clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
|
|
ret = true;
|
|
} else if (get_pages(sbi, F2FS_DIRTY_QDATA)) {
|
|
ret = true;
|
|
}
|
|
f2fs_up_write(&sbi->quota_sem);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Freeze all the FS-operations for checkpoint.
|
|
*/
|
|
static int block_operations(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct writeback_control wbc = {
|
|
.sync_mode = WB_SYNC_ALL,
|
|
.nr_to_write = LONG_MAX,
|
|
.for_reclaim = 0,
|
|
};
|
|
int err = 0, cnt = 0;
|
|
|
|
/*
|
|
* Let's flush inline_data in dirty node pages.
|
|
*/
|
|
f2fs_flush_inline_data(sbi);
|
|
|
|
retry_flush_quotas:
|
|
f2fs_lock_all(sbi);
|
|
if (__need_flush_quota(sbi)) {
|
|
int locked;
|
|
|
|
if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) {
|
|
set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
|
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
|
|
goto retry_flush_dents;
|
|
}
|
|
f2fs_unlock_all(sbi);
|
|
|
|
/* only failed during mount/umount/freeze/quotactl */
|
|
locked = down_read_trylock(&sbi->sb->s_umount);
|
|
f2fs_quota_sync(sbi->sb, -1);
|
|
if (locked)
|
|
up_read(&sbi->sb->s_umount);
|
|
cond_resched();
|
|
goto retry_flush_quotas;
|
|
}
|
|
|
|
retry_flush_dents:
|
|
/* write all the dirty dentry pages */
|
|
if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
|
|
f2fs_unlock_all(sbi);
|
|
err = f2fs_sync_dirty_inodes(sbi, DIR_INODE, true);
|
|
if (err)
|
|
return err;
|
|
cond_resched();
|
|
goto retry_flush_quotas;
|
|
}
|
|
|
|
/*
|
|
* POR: we should ensure that there are no dirty node pages
|
|
* until finishing nat/sit flush. inode->i_blocks can be updated.
|
|
*/
|
|
f2fs_down_write(&sbi->node_change);
|
|
|
|
if (get_pages(sbi, F2FS_DIRTY_IMETA)) {
|
|
f2fs_up_write(&sbi->node_change);
|
|
f2fs_unlock_all(sbi);
|
|
err = f2fs_sync_inode_meta(sbi);
|
|
if (err)
|
|
return err;
|
|
cond_resched();
|
|
goto retry_flush_quotas;
|
|
}
|
|
|
|
retry_flush_nodes:
|
|
f2fs_down_write(&sbi->node_write);
|
|
|
|
if (get_pages(sbi, F2FS_DIRTY_NODES)) {
|
|
f2fs_up_write(&sbi->node_write);
|
|
atomic_inc(&sbi->wb_sync_req[NODE]);
|
|
err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO);
|
|
atomic_dec(&sbi->wb_sync_req[NODE]);
|
|
if (err) {
|
|
f2fs_up_write(&sbi->node_change);
|
|
f2fs_unlock_all(sbi);
|
|
return err;
|
|
}
|
|
cond_resched();
|
|
goto retry_flush_nodes;
|
|
}
|
|
|
|
/*
|
|
* sbi->node_change is used only for AIO write_begin path which produces
|
|
* dirty node blocks and some checkpoint values by block allocation.
|
|
*/
|
|
__prepare_cp_block(sbi);
|
|
f2fs_up_write(&sbi->node_change);
|
|
return err;
|
|
}
|
|
|
|
static void unblock_operations(struct f2fs_sb_info *sbi)
|
|
{
|
|
f2fs_up_write(&sbi->node_write);
|
|
f2fs_unlock_all(sbi);
|
|
}
|
|
|
|
void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type)
|
|
{
|
|
DEFINE_WAIT(wait);
|
|
|
|
for (;;) {
|
|
if (!get_pages(sbi, type))
|
|
break;
|
|
|
|
if (unlikely(f2fs_cp_error(sbi) &&
|
|
!is_sbi_flag_set(sbi, SBI_IS_CLOSE)))
|
|
break;
|
|
|
|
if (type == F2FS_DIRTY_META)
|
|
f2fs_sync_meta_pages(sbi, META, LONG_MAX,
|
|
FS_CP_META_IO);
|
|
else if (type == F2FS_WB_CP_DATA)
|
|
f2fs_submit_merged_write(sbi, DATA);
|
|
|
|
prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE);
|
|
io_schedule_timeout(DEFAULT_IO_TIMEOUT);
|
|
}
|
|
finish_wait(&sbi->cp_wait, &wait);
|
|
}
|
|
|
|
static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
|
|
{
|
|
unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num;
|
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
|
|
unsigned long flags;
|
|
|
|
if (cpc->reason & CP_UMOUNT) {
|
|
if (le32_to_cpu(ckpt->cp_pack_total_block_count) +
|
|
NM_I(sbi)->nat_bits_blocks > BLKS_PER_SEG(sbi)) {
|
|
clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
|
|
f2fs_notice(sbi, "Disable nat_bits due to no space");
|
|
} else if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG) &&
|
|
f2fs_nat_bitmap_enabled(sbi)) {
|
|
f2fs_enable_nat_bits(sbi);
|
|
set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
|
|
f2fs_notice(sbi, "Rebuild and enable nat_bits");
|
|
}
|
|
}
|
|
|
|
spin_lock_irqsave(&sbi->cp_lock, flags);
|
|
|
|
if (cpc->reason & CP_TRIMMED)
|
|
__set_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
|
|
else
|
|
__clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
|
|
|
|
if (cpc->reason & CP_UMOUNT)
|
|
__set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
|
|
else
|
|
__clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
|
|
|
|
if (cpc->reason & CP_FASTBOOT)
|
|
__set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
|
|
else
|
|
__clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
|
|
|
|
if (orphan_num)
|
|
__set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
|
|
else
|
|
__clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
|
|
|
|
if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
|
|
__set_ckpt_flags(ckpt, CP_FSCK_FLAG);
|
|
|
|
if (is_sbi_flag_set(sbi, SBI_IS_RESIZEFS))
|
|
__set_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
|
|
else
|
|
__clear_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
|
|
|
|
if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
|
|
__set_ckpt_flags(ckpt, CP_DISABLED_FLAG);
|
|
else
|
|
__clear_ckpt_flags(ckpt, CP_DISABLED_FLAG);
|
|
|
|
if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK))
|
|
__set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
|
|
else
|
|
__clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
|
|
|
|
if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH))
|
|
__set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
|
|
else
|
|
__clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
|
|
|
|
if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR))
|
|
__set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
|
|
|
|
/* set this flag to activate crc|cp_ver for recovery */
|
|
__set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG);
|
|
__clear_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG);
|
|
|
|
spin_unlock_irqrestore(&sbi->cp_lock, flags);
|
|
}
|
|
|
|
static void commit_checkpoint(struct f2fs_sb_info *sbi,
|
|
void *src, block_t blk_addr)
|
|
{
|
|
struct writeback_control wbc = {
|
|
.for_reclaim = 0,
|
|
};
|
|
|
|
/*
|
|
* filemap_get_folios_tag and lock_page again will take
|
|
* some extra time. Therefore, f2fs_update_meta_pages and
|
|
* f2fs_sync_meta_pages are combined in this function.
|
|
*/
|
|
struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
|
|
int err;
|
|
|
|
f2fs_wait_on_page_writeback(page, META, true, true);
|
|
|
|
memcpy(page_address(page), src, PAGE_SIZE);
|
|
|
|
set_page_dirty(page);
|
|
if (unlikely(!clear_page_dirty_for_io(page)))
|
|
f2fs_bug_on(sbi, 1);
|
|
|
|
/* writeout cp pack 2 page */
|
|
err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO);
|
|
if (unlikely(err && f2fs_cp_error(sbi))) {
|
|
f2fs_put_page(page, 1);
|
|
return;
|
|
}
|
|
|
|
f2fs_bug_on(sbi, err);
|
|
f2fs_put_page(page, 0);
|
|
|
|
/* submit checkpoint (with barrier if NOBARRIER is not set) */
|
|
f2fs_submit_merged_write(sbi, META_FLUSH);
|
|
}
|
|
|
|
static inline u64 get_sectors_written(struct block_device *bdev)
|
|
{
|
|
return (u64)part_stat_read(bdev, sectors[STAT_WRITE]);
|
|
}
|
|
|
|
u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi)
|
|
{
|
|
if (f2fs_is_multi_device(sbi)) {
|
|
u64 sectors = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < sbi->s_ndevs; i++)
|
|
sectors += get_sectors_written(FDEV(i).bdev);
|
|
|
|
return sectors;
|
|
}
|
|
|
|
return get_sectors_written(sbi->sb->s_bdev);
|
|
}
|
|
|
|
static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
|
|
{
|
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num, flags;
|
|
block_t start_blk;
|
|
unsigned int data_sum_blocks, orphan_blocks;
|
|
__u32 crc32 = 0;
|
|
int i;
|
|
int cp_payload_blks = __cp_payload(sbi);
|
|
struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
|
|
u64 kbytes_written;
|
|
int err;
|
|
|
|
/* Flush all the NAT/SIT pages */
|
|
f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
|
|
|
|
/* start to update checkpoint, cp ver is already updated previously */
|
|
ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true));
|
|
ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));
|
|
for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
|
|
struct curseg_info *curseg = CURSEG_I(sbi, i + CURSEG_HOT_NODE);
|
|
|
|
ckpt->cur_node_segno[i] = cpu_to_le32(curseg->segno);
|
|
ckpt->cur_node_blkoff[i] = cpu_to_le16(curseg->next_blkoff);
|
|
ckpt->alloc_type[i + CURSEG_HOT_NODE] = curseg->alloc_type;
|
|
}
|
|
for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
|
|
struct curseg_info *curseg = CURSEG_I(sbi, i + CURSEG_HOT_DATA);
|
|
|
|
ckpt->cur_data_segno[i] = cpu_to_le32(curseg->segno);
|
|
ckpt->cur_data_blkoff[i] = cpu_to_le16(curseg->next_blkoff);
|
|
ckpt->alloc_type[i + CURSEG_HOT_DATA] = curseg->alloc_type;
|
|
}
|
|
|
|
/* 2 cp + n data seg summary + orphan inode blocks */
|
|
data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false);
|
|
spin_lock_irqsave(&sbi->cp_lock, flags);
|
|
if (data_sum_blocks < NR_CURSEG_DATA_TYPE)
|
|
__set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
|
|
else
|
|
__clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
|
|
spin_unlock_irqrestore(&sbi->cp_lock, flags);
|
|
|
|
orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num);
|
|
ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +
|
|
orphan_blocks);
|
|
|
|
if (__remain_node_summaries(cpc->reason))
|
|
ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
|
|
cp_payload_blks + data_sum_blocks +
|
|
orphan_blocks + NR_CURSEG_NODE_TYPE);
|
|
else
|
|
ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
|
|
cp_payload_blks + data_sum_blocks +
|
|
orphan_blocks);
|
|
|
|
/* update ckpt flag for checkpoint */
|
|
update_ckpt_flags(sbi, cpc);
|
|
|
|
/* update SIT/NAT bitmap */
|
|
get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
|
|
get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
|
|
|
|
crc32 = f2fs_checkpoint_chksum(sbi, ckpt);
|
|
*((__le32 *)((unsigned char *)ckpt +
|
|
le32_to_cpu(ckpt->checksum_offset)))
|
|
= cpu_to_le32(crc32);
|
|
|
|
start_blk = __start_cp_next_addr(sbi);
|
|
|
|
/* write nat bits */
|
|
if ((cpc->reason & CP_UMOUNT) &&
|
|
is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) {
|
|
__u64 cp_ver = cur_cp_version(ckpt);
|
|
block_t blk;
|
|
|
|
cp_ver |= ((__u64)crc32 << 32);
|
|
*(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver);
|
|
|
|
blk = start_blk + BLKS_PER_SEG(sbi) - nm_i->nat_bits_blocks;
|
|
for (i = 0; i < nm_i->nat_bits_blocks; i++)
|
|
f2fs_update_meta_page(sbi, nm_i->nat_bits +
|
|
F2FS_BLK_TO_BYTES(i), blk + i);
|
|
}
|
|
|
|
/* write out checkpoint buffer at block 0 */
|
|
f2fs_update_meta_page(sbi, ckpt, start_blk++);
|
|
|
|
for (i = 1; i < 1 + cp_payload_blks; i++)
|
|
f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
|
|
start_blk++);
|
|
|
|
if (orphan_num) {
|
|
write_orphan_inodes(sbi, start_blk);
|
|
start_blk += orphan_blocks;
|
|
}
|
|
|
|
f2fs_write_data_summaries(sbi, start_blk);
|
|
start_blk += data_sum_blocks;
|
|
|
|
/* Record write statistics in the hot node summary */
|
|
kbytes_written = sbi->kbytes_written;
|
|
kbytes_written += (f2fs_get_sectors_written(sbi) -
|
|
sbi->sectors_written_start) >> 1;
|
|
seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written);
|
|
|
|
if (__remain_node_summaries(cpc->reason)) {
|
|
f2fs_write_node_summaries(sbi, start_blk);
|
|
start_blk += NR_CURSEG_NODE_TYPE;
|
|
}
|
|
|
|
/* Here, we have one bio having CP pack except cp pack 2 page */
|
|
f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
|
|
/* Wait for all dirty meta pages to be submitted for IO */
|
|
f2fs_wait_on_all_pages(sbi, F2FS_DIRTY_META);
|
|
|
|
/* wait for previous submitted meta pages writeback */
|
|
f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
|
|
|
|
/* flush all device cache */
|
|
err = f2fs_flush_device_cache(sbi);
|
|
if (err)
|
|
return err;
|
|
|
|
/* barrier and flush checkpoint cp pack 2 page if it can */
|
|
commit_checkpoint(sbi, ckpt, start_blk);
|
|
f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
|
|
|
|
/*
|
|
* invalidate intermediate page cache borrowed from meta inode which are
|
|
* used for migration of encrypted, verity or compressed inode's blocks.
|
|
*/
|
|
if (f2fs_sb_has_encrypt(sbi) || f2fs_sb_has_verity(sbi) ||
|
|
f2fs_sb_has_compression(sbi))
|
|
f2fs_bug_on(sbi,
|
|
invalidate_inode_pages2_range(META_MAPPING(sbi),
|
|
MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1));
|
|
|
|
f2fs_release_ino_entry(sbi, false);
|
|
|
|
f2fs_reset_fsync_node_info(sbi);
|
|
|
|
clear_sbi_flag(sbi, SBI_IS_DIRTY);
|
|
clear_sbi_flag(sbi, SBI_NEED_CP);
|
|
clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
|
|
|
|
spin_lock(&sbi->stat_lock);
|
|
sbi->unusable_block_count = 0;
|
|
spin_unlock(&sbi->stat_lock);
|
|
|
|
__set_cp_next_pack(sbi);
|
|
|
|
/*
|
|
* redirty superblock if metadata like node page or inode cache is
|
|
* updated during writing checkpoint.
|
|
*/
|
|
if (get_pages(sbi, F2FS_DIRTY_NODES) ||
|
|
get_pages(sbi, F2FS_DIRTY_IMETA))
|
|
set_sbi_flag(sbi, SBI_IS_DIRTY);
|
|
|
|
f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS));
|
|
|
|
return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0;
|
|
}
|
|
|
|
int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
|
|
{
|
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
|
|
unsigned long long ckpt_ver;
|
|
int err = 0;
|
|
|
|
if (f2fs_readonly(sbi->sb) || f2fs_hw_is_readonly(sbi))
|
|
return -EROFS;
|
|
|
|
if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
|
|
if (cpc->reason != CP_PAUSE)
|
|
return 0;
|
|
f2fs_warn(sbi, "Start checkpoint disabled!");
|
|
}
|
|
if (cpc->reason != CP_RESIZE)
|
|
f2fs_down_write(&sbi->cp_global_sem);
|
|
|
|
if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
|
|
((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) ||
|
|
((cpc->reason & CP_DISCARD) && !sbi->discard_blks)))
|
|
goto out;
|
|
if (unlikely(f2fs_cp_error(sbi))) {
|
|
err = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");
|
|
|
|
err = block_operations(sbi);
|
|
if (err)
|
|
goto out;
|
|
|
|
trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");
|
|
|
|
f2fs_flush_merged_writes(sbi);
|
|
|
|
/* this is the case of multiple fstrims without any changes */
|
|
if (cpc->reason & CP_DISCARD) {
|
|
if (!f2fs_exist_trim_candidates(sbi, cpc)) {
|
|
unblock_operations(sbi);
|
|
goto out;
|
|
}
|
|
|
|
if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 &&
|
|
SIT_I(sbi)->dirty_sentries == 0 &&
|
|
prefree_segments(sbi) == 0) {
|
|
f2fs_flush_sit_entries(sbi, cpc);
|
|
f2fs_clear_prefree_segments(sbi, cpc);
|
|
unblock_operations(sbi);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* update checkpoint pack index
|
|
* Increase the version number so that
|
|
* SIT entries and seg summaries are written at correct place
|
|
*/
|
|
ckpt_ver = cur_cp_version(ckpt);
|
|
ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);
|
|
|
|
/* write cached NAT/SIT entries to NAT/SIT area */
|
|
err = f2fs_flush_nat_entries(sbi, cpc);
|
|
if (err) {
|
|
f2fs_err(sbi, "f2fs_flush_nat_entries failed err:%d, stop checkpoint", err);
|
|
f2fs_bug_on(sbi, !f2fs_cp_error(sbi));
|
|
goto stop;
|
|
}
|
|
|
|
f2fs_flush_sit_entries(sbi, cpc);
|
|
|
|
/* save inmem log status */
|
|
f2fs_save_inmem_curseg(sbi);
|
|
|
|
err = do_checkpoint(sbi, cpc);
|
|
if (err) {
|
|
f2fs_err(sbi, "do_checkpoint failed err:%d, stop checkpoint", err);
|
|
f2fs_bug_on(sbi, !f2fs_cp_error(sbi));
|
|
f2fs_release_discard_addrs(sbi);
|
|
} else {
|
|
f2fs_clear_prefree_segments(sbi, cpc);
|
|
}
|
|
|
|
f2fs_restore_inmem_curseg(sbi);
|
|
f2fs_reinit_atgc_curseg(sbi);
|
|
stat_inc_cp_count(sbi);
|
|
stop:
|
|
unblock_operations(sbi);
|
|
|
|
if (cpc->reason & CP_RECOVERY)
|
|
f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver);
|
|
|
|
/* update CP_TIME to trigger checkpoint periodically */
|
|
f2fs_update_time(sbi, CP_TIME);
|
|
trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
|
|
out:
|
|
if (cpc->reason != CP_RESIZE)
|
|
f2fs_up_write(&sbi->cp_global_sem);
|
|
return err;
|
|
}
|
|
|
|
void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < MAX_INO_ENTRY; i++) {
|
|
struct inode_management *im = &sbi->im[i];
|
|
|
|
INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC);
|
|
spin_lock_init(&im->ino_lock);
|
|
INIT_LIST_HEAD(&im->ino_list);
|
|
im->ino_num = 0;
|
|
}
|
|
|
|
sbi->max_orphans = (BLKS_PER_SEG(sbi) - F2FS_CP_PACKS -
|
|
NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) *
|
|
F2FS_ORPHANS_PER_BLOCK;
|
|
}
|
|
|
|
int __init f2fs_create_checkpoint_caches(void)
|
|
{
|
|
ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry",
|
|
sizeof(struct ino_entry));
|
|
if (!ino_entry_slab)
|
|
return -ENOMEM;
|
|
f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",
|
|
sizeof(struct inode_entry));
|
|
if (!f2fs_inode_entry_slab) {
|
|
kmem_cache_destroy(ino_entry_slab);
|
|
return -ENOMEM;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void f2fs_destroy_checkpoint_caches(void)
|
|
{
|
|
kmem_cache_destroy(ino_entry_slab);
|
|
kmem_cache_destroy(f2fs_inode_entry_slab);
|
|
}
|
|
|
|
static int __write_checkpoint_sync(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct cp_control cpc = { .reason = CP_SYNC, };
|
|
int err;
|
|
|
|
f2fs_down_write(&sbi->gc_lock);
|
|
err = f2fs_write_checkpoint(sbi, &cpc);
|
|
f2fs_up_write(&sbi->gc_lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void __checkpoint_and_complete_reqs(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct ckpt_req_control *cprc = &sbi->cprc_info;
|
|
struct ckpt_req *req, *next;
|
|
struct llist_node *dispatch_list;
|
|
u64 sum_diff = 0, diff, count = 0;
|
|
int ret;
|
|
|
|
dispatch_list = llist_del_all(&cprc->issue_list);
|
|
if (!dispatch_list)
|
|
return;
|
|
dispatch_list = llist_reverse_order(dispatch_list);
|
|
|
|
ret = __write_checkpoint_sync(sbi);
|
|
atomic_inc(&cprc->issued_ckpt);
|
|
|
|
llist_for_each_entry_safe(req, next, dispatch_list, llnode) {
|
|
diff = (u64)ktime_ms_delta(ktime_get(), req->queue_time);
|
|
req->ret = ret;
|
|
complete(&req->wait);
|
|
|
|
sum_diff += diff;
|
|
count++;
|
|
}
|
|
atomic_sub(count, &cprc->queued_ckpt);
|
|
atomic_add(count, &cprc->total_ckpt);
|
|
|
|
spin_lock(&cprc->stat_lock);
|
|
cprc->cur_time = (unsigned int)div64_u64(sum_diff, count);
|
|
if (cprc->peak_time < cprc->cur_time)
|
|
cprc->peak_time = cprc->cur_time;
|
|
spin_unlock(&cprc->stat_lock);
|
|
}
|
|
|
|
static int issue_checkpoint_thread(void *data)
|
|
{
|
|
struct f2fs_sb_info *sbi = data;
|
|
struct ckpt_req_control *cprc = &sbi->cprc_info;
|
|
wait_queue_head_t *q = &cprc->ckpt_wait_queue;
|
|
repeat:
|
|
if (kthread_should_stop())
|
|
return 0;
|
|
|
|
if (!llist_empty(&cprc->issue_list))
|
|
__checkpoint_and_complete_reqs(sbi);
|
|
|
|
wait_event_interruptible(*q,
|
|
kthread_should_stop() || !llist_empty(&cprc->issue_list));
|
|
goto repeat;
|
|
}
|
|
|
|
static void flush_remained_ckpt_reqs(struct f2fs_sb_info *sbi,
|
|
struct ckpt_req *wait_req)
|
|
{
|
|
struct ckpt_req_control *cprc = &sbi->cprc_info;
|
|
|
|
if (!llist_empty(&cprc->issue_list)) {
|
|
__checkpoint_and_complete_reqs(sbi);
|
|
} else {
|
|
/* already dispatched by issue_checkpoint_thread */
|
|
if (wait_req)
|
|
wait_for_completion(&wait_req->wait);
|
|
}
|
|
}
|
|
|
|
static void init_ckpt_req(struct ckpt_req *req)
|
|
{
|
|
memset(req, 0, sizeof(struct ckpt_req));
|
|
|
|
init_completion(&req->wait);
|
|
req->queue_time = ktime_get();
|
|
}
|
|
|
|
int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct ckpt_req_control *cprc = &sbi->cprc_info;
|
|
struct ckpt_req req;
|
|
struct cp_control cpc;
|
|
|
|
cpc.reason = __get_cp_reason(sbi);
|
|
if (!test_opt(sbi, MERGE_CHECKPOINT) || cpc.reason != CP_SYNC) {
|
|
int ret;
|
|
|
|
f2fs_down_write(&sbi->gc_lock);
|
|
ret = f2fs_write_checkpoint(sbi, &cpc);
|
|
f2fs_up_write(&sbi->gc_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
if (!cprc->f2fs_issue_ckpt)
|
|
return __write_checkpoint_sync(sbi);
|
|
|
|
init_ckpt_req(&req);
|
|
|
|
llist_add(&req.llnode, &cprc->issue_list);
|
|
atomic_inc(&cprc->queued_ckpt);
|
|
|
|
/*
|
|
* update issue_list before we wake up issue_checkpoint thread,
|
|
* this smp_mb() pairs with another barrier in ___wait_event(),
|
|
* see more details in comments of waitqueue_active().
|
|
*/
|
|
smp_mb();
|
|
|
|
if (waitqueue_active(&cprc->ckpt_wait_queue))
|
|
wake_up(&cprc->ckpt_wait_queue);
|
|
|
|
if (cprc->f2fs_issue_ckpt)
|
|
wait_for_completion(&req.wait);
|
|
else
|
|
flush_remained_ckpt_reqs(sbi, &req);
|
|
|
|
return req.ret;
|
|
}
|
|
|
|
int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi)
|
|
{
|
|
dev_t dev = sbi->sb->s_bdev->bd_dev;
|
|
struct ckpt_req_control *cprc = &sbi->cprc_info;
|
|
|
|
if (cprc->f2fs_issue_ckpt)
|
|
return 0;
|
|
|
|
cprc->f2fs_issue_ckpt = kthread_run(issue_checkpoint_thread, sbi,
|
|
"f2fs_ckpt-%u:%u", MAJOR(dev), MINOR(dev));
|
|
if (IS_ERR(cprc->f2fs_issue_ckpt)) {
|
|
int err = PTR_ERR(cprc->f2fs_issue_ckpt);
|
|
|
|
cprc->f2fs_issue_ckpt = NULL;
|
|
return err;
|
|
}
|
|
|
|
set_task_ioprio(cprc->f2fs_issue_ckpt, cprc->ckpt_thread_ioprio);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct ckpt_req_control *cprc = &sbi->cprc_info;
|
|
struct task_struct *ckpt_task;
|
|
|
|
if (!cprc->f2fs_issue_ckpt)
|
|
return;
|
|
|
|
ckpt_task = cprc->f2fs_issue_ckpt;
|
|
cprc->f2fs_issue_ckpt = NULL;
|
|
kthread_stop(ckpt_task);
|
|
|
|
f2fs_flush_ckpt_thread(sbi);
|
|
}
|
|
|
|
void f2fs_flush_ckpt_thread(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct ckpt_req_control *cprc = &sbi->cprc_info;
|
|
|
|
flush_remained_ckpt_reqs(sbi, NULL);
|
|
|
|
/* Let's wait for the previous dispatched checkpoint. */
|
|
while (atomic_read(&cprc->queued_ckpt))
|
|
io_schedule_timeout(DEFAULT_IO_TIMEOUT);
|
|
}
|
|
|
|
void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct ckpt_req_control *cprc = &sbi->cprc_info;
|
|
|
|
atomic_set(&cprc->issued_ckpt, 0);
|
|
atomic_set(&cprc->total_ckpt, 0);
|
|
atomic_set(&cprc->queued_ckpt, 0);
|
|
cprc->ckpt_thread_ioprio = DEFAULT_CHECKPOINT_IOPRIO;
|
|
init_waitqueue_head(&cprc->ckpt_wait_queue);
|
|
init_llist_head(&cprc->issue_list);
|
|
spin_lock_init(&cprc->stat_lock);
|
|
}
|