9aa29a20b7
The direct IO code is over a thousand lines and it's currently spread between file.c and inode.c, which makes it not easy to locate some parts of it sometimes. Also inode.c is about 11 thousand lines and file.c about 4 thousand lines, both too big. So move all the direct IO code into a dedicated file, so that it's easy to locate all its code and reduce the sizes of inode.c and file.c. This is a pure move of code without any other changes except export a a couple functions from inode.c (get_extent_allocation_hint() and create_io_em()) because they are used in inode.c and the new direct-io.c file, and a couple functions from file.c (btrfs_buffered_write() and btrfs_write_check()) because they are used both in file.c and in the new direct-io.c file. Reviewed-by: Boris Burkov <boris@bur.io> Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BTRFS_FILE_H
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#define BTRFS_FILE_H
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#include <linux/types.h>
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struct file;
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struct extent_state;
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struct kiocb;
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struct iov_iter;
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struct page;
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struct btrfs_ioctl_encoded_io_args;
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struct btrfs_drop_extents_args;
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struct btrfs_inode;
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struct btrfs_root;
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struct btrfs_path;
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struct btrfs_replace_extent_info;
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struct btrfs_trans_handle;
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extern const struct file_operations btrfs_file_operations;
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int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
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int btrfs_drop_extents(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, struct btrfs_inode *inode,
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struct btrfs_drop_extents_args *args);
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int btrfs_replace_file_extents(struct btrfs_inode *inode,
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struct btrfs_path *path, const u64 start,
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const u64 end,
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struct btrfs_replace_extent_info *extent_info,
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struct btrfs_trans_handle **trans_out);
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int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
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struct btrfs_inode *inode, u64 start, u64 end);
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ssize_t btrfs_do_write_iter(struct kiocb *iocb, struct iov_iter *from,
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const struct btrfs_ioctl_encoded_io_args *encoded);
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int btrfs_release_file(struct inode *inode, struct file *file);
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int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages,
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size_t num_pages, loff_t pos, size_t write_bytes,
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struct extent_state **cached, bool noreserve);
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int btrfs_fdatawrite_range(struct btrfs_inode *inode, loff_t start, loff_t end);
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int btrfs_check_nocow_lock(struct btrfs_inode *inode, loff_t pos,
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size_t *write_bytes, bool nowait);
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void btrfs_check_nocow_unlock(struct btrfs_inode *inode);
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bool btrfs_find_delalloc_in_range(struct btrfs_inode *inode, u64 start, u64 end,
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struct extent_state **cached_state,
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u64 *delalloc_start_ret, u64 *delalloc_end_ret);
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int btrfs_write_check(struct kiocb *iocb, struct iov_iter *from, size_t count);
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ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i);
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#endif
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