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fs: move inode_dio_wait calls into ->setattr

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Let filesystems handle waiting for direct I/O requests themselves instead
of doing it beforehand.  This means filesystem-specific locks to prevent
new dio referenes from appearing can be held.  This is important to allow
generalizing i_dio_count to non-DIO_LOCKING filesystems.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig
2011-06-24 14:29:45 -04:00
committed by Al Viro
parent 11b80f459a
commit 562c72aa57
12 changed files with 24 additions and 3 deletions
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fs/gfs2/bmap.c
+2
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@@ -1224,6 +1224,8 @@ int gfs2_setattr_size(struct inode *inode, u64 newsize)
if (ret)
return ret;
inode_dio_wait(inode);
oldsize = inode->i_size;
if (newsize >= oldsize)
return do_grow(inode, newsize);