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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 <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>
This commit is contained in:
Dave Hansen
2006-09-30 23:29:06 -07:00
committed by Linus Torvalds
parent 17ff785691
commit ce71ec3684
15 changed files with 26 additions and 21 deletions
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4
fs/hpfs/namei.c
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@@ -495,7 +495,7 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
break;
default:
drop_nlink(dir);
inode->i_nlink = 0;
clear_nlink(inode);
err = 0;
}
goto out;
@@ -590,7 +590,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
int r;
if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 1)) != 2) {
if ((nde = map_dirent(new_dir, hpfs_i(new_dir)->i_dno, (char *)new_name, new_len, NULL, &qbh1))) {
new_inode->i_nlink = 0;
clear_nlink(new_inode);
copy_de(nde, &de);
memcpy(nde->name, new_name, new_len);
hpfs_mark_4buffers_dirty(&qbh1);