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[PATCH] r/o bind mounts: monitor zeroing of i_nlink

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Some filesystems, instead of simply decrementing i_nlink, simply zero it
during an unlink operation.  We need to catch these in addition to the
decrement operations.

Signed-off-by: Dave Hansen <[email protected]>
Acked-by: Christoph Hellwig <[email protected]>
Cc: Al Viro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Dave Hansen 2006-09-30 23:29:06 -07:00 • committed by Linus Torvalds
commit ce71ec3684
15 changed files with 26 additions and 21 deletions
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2
fs/ext3/namei.c
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@ -2045,7 +2045,7 @@ static int ext3_rmdir (struct inode * dir, struct dentry *dentry)
"empty directory has nlink!=2 (%d)",
inode->i_nlink);
inode->i_version++;
inode->i_nlink = 0;
clear_nlink(inode);
/* There's no need to set i_disksize: the fact that i_nlink is
* zero will ensure that the right thing happens during any
* recovery. */