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authorOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>2006-01-08 04:02:14 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-08 23:13:47 -0500
commit28fd129827b00e12829d48a5290f46277600619b (patch)
tree38e50e1b88965fec41ea5b36aa557fb5c2b1ca73 /fs/9p/vfs_file.c
parent05eb0b51fb46430050d5873458612f53e0234f2e (diff)
[PATCH] Fix and add EXPORT_SYMBOL(filemap_write_and_wait)
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>
Diffstat (limited to 'fs/9p/vfs_file.c')
-rw-r--r--fs/9p/vfs_file.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 89c849da8504..e13577da9130 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -165,8 +165,7 @@ static int v9fs_file_lock(struct file *filp, int cmd, struct file_lock *fl)
165 return -ENOLCK; 165 return -ENOLCK;
166 166
167 if ((IS_SETLK(cmd) || IS_SETLKW(cmd)) && fl->fl_type != F_UNLCK) { 167 if ((IS_SETLK(cmd) || IS_SETLKW(cmd)) && fl->fl_type != F_UNLCK) {
168 filemap_fdatawrite(inode->i_mapping); 168 filemap_write_and_wait(inode->i_mapping);
169 filemap_fdatawait(inode->i_mapping);
170 invalidate_inode_pages(&inode->i_data); 169 invalidate_inode_pages(&inode->i_data);
171 } 170 }
172 171