[PATCH] r/o bind mounts: monitor zeroing of i_nlink
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 <haveblue@us.ibm.com> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Linus Torvalds

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@@ -2045,7 +2045,7 @@ static int ext3_rmdir (struct inode * dir, struct dentry *dentry)
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"empty directory has nlink!=2 (%d)",
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inode->i_nlink);
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inode->i_version++;
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inode->i_nlink = 0;
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clear_nlink(inode);
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/* There's no need to set i_disksize: the fact that i_nlink is
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* zero will ensure that the right thing happens during any
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* recovery. */
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