28fd129827
This patch add EXPORT_SYMBOL(filemap_write_and_wait) and use it. See mm/filemap.c: And changes the filemap_write_and_wait() and filemap_write_and_wait_range(). Current filemap_write_and_wait() doesn't wait if filemap_fdatawrite() returns error. However, even if filemap_fdatawrite() returned an error, it may have submitted the partially data pages to the device. (e.g. in the case of -ENOSPC) <quotation> Andrew Morton writes, If filemap_fdatawrite() returns an error, this might be due to some I/O problem: dead disk, unplugged cable, etc. Given the generally crappy quality of the kernel's handling of such exceptions, there's a good chance that the filemap_fdatawait() will get stuck in D state forever. </quotation> So, this patch doesn't wait if filemap_fdatawrite() returns the -EIO. Trond, could you please review the nfs part? Especially I'm not sure, nfs must use the "filemap_fdatawrite(inode->i_mapping) == 0", or not. Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
112 lines
2.2 KiB
C
112 lines
2.2 KiB
C
/*
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* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.h"
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/*
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* Stub for no-op vnode operations that return error status.
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*/
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int
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fs_noerr(void)
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{
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return 0;
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}
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/*
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* Operation unsupported under this file system.
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*/
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int
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fs_nosys(void)
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{
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return ENOSYS;
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}
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/*
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* Stub for inactive, strategy, and read/write lock/unlock. Does nothing.
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*/
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/* ARGSUSED */
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void
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fs_noval(void)
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{
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}
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/*
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* vnode pcache layer for vnode_tosspages.
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* 'last' parameter unused but left in for IRIX compatibility
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*/
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void
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fs_tosspages(
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bhv_desc_t *bdp,
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xfs_off_t first,
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xfs_off_t last,
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int fiopt)
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{
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vnode_t *vp = BHV_TO_VNODE(bdp);
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struct inode *ip = LINVFS_GET_IP(vp);
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if (VN_CACHED(vp))
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truncate_inode_pages(ip->i_mapping, first);
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}
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/*
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* vnode pcache layer for vnode_flushinval_pages.
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* 'last' parameter unused but left in for IRIX compatibility
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*/
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void
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fs_flushinval_pages(
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bhv_desc_t *bdp,
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xfs_off_t first,
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xfs_off_t last,
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int fiopt)
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{
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vnode_t *vp = BHV_TO_VNODE(bdp);
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struct inode *ip = LINVFS_GET_IP(vp);
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if (VN_CACHED(vp)) {
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filemap_write_and_wait(ip->i_mapping);
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truncate_inode_pages(ip->i_mapping, first);
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}
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}
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/*
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* vnode pcache layer for vnode_flush_pages.
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* 'last' parameter unused but left in for IRIX compatibility
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*/
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int
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fs_flush_pages(
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bhv_desc_t *bdp,
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xfs_off_t first,
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xfs_off_t last,
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uint64_t flags,
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int fiopt)
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{
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vnode_t *vp = BHV_TO_VNODE(bdp);
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struct inode *ip = LINVFS_GET_IP(vp);
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if (VN_CACHED(vp)) {
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filemap_fdatawrite(ip->i_mapping);
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if (flags & XFS_B_ASYNC)
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return 0;
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filemap_fdatawait(ip->i_mapping);
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}
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return 0;
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}
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