aboutsummaryrefslogtreecommitdiffstats
path: root/fs/msdos/namei.c
diff options
context:
space:
mode:
authorDave Hansen <haveblue@us.ibm.com>2006-09-30 23:29:03 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-01 00:39:30 -0700
commit9a53c3a783c2fa9b969628e65695c11c3e51e673 (patch)
tree5a6115e18ee105246d46e3db3d5b07749d232f5b /fs/msdos/namei.c
parentaab520e2f6c80160cabd187a8d0292d1cec8ff68 (diff)
downloadmrst-s0i3-test-9a53c3a783c2fa9b969628e65695c11c3e51e673.tar.gz
mrst-s0i3-test-9a53c3a783c2fa9b969628e65695c11c3e51e673.tar.xz
mrst-s0i3-test-9a53c3a783c2fa9b969628e65695c11c3e51e673.zip
[PATCH] r/o bind mounts: unlink: monitor i_nlink
When a filesystem decrements i_nlink to zero, it means that a write must be performed in order to drop the inode from the filesystem. We're shortly going to have keep filesystems from being remounted r/o between the time that this i_nlink decrement and that write occurs. So, add a little helper function to do the decrements. We'll tie into it in a bit to note when i_nlink hits zero. 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>
Diffstat (limited to 'fs/msdos/namei.c')
-rw-r--r--fs/msdos/namei.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/msdos/namei.c b/fs/msdos/namei.c
index d220165d491..635613f2f65 100644
--- a/fs/msdos/namei.c
+++ b/fs/msdos/namei.c
@@ -343,7 +343,7 @@ static int msdos_rmdir(struct inode *dir, struct dentry *dentry)
err = fat_remove_entries(dir, &sinfo); /* and releases bh */
if (err)
goto out;
- dir->i_nlink--;
+ drop_nlink(dir);
inode->i_nlink = 0;
inode->i_ctime = CURRENT_TIME_SEC;
@@ -549,7 +549,7 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
if (err)
goto error_dotdot;
}
- old_dir->i_nlink--;
+ drop_nlink(old_dir);
if (!new_inode)
new_dir->i_nlink++;
}
@@ -566,10 +566,9 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
mark_inode_dirty(old_dir);
if (new_inode) {
+ drop_nlink(new_inode);
if (is_dir)
- new_inode->i_nlink -= 2;
- else
- new_inode->i_nlink--;
+ drop_nlink(new_inode);
new_inode->i_ctime = ts;
}
out: