diff options
| author | Miklos Szeredi <miklos@szeredi.hu> | 2005-07-08 02:57:24 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-08 03:23:51 +0200 |
| commit | a4d70278610e6bebe44a7b59a469fe7391387da6 (patch) | |
| tree | 936ff611c40a3e1e3027f548e31ef312ca104fab | |
| parent | [PATCH] namespace.c: fix race in mark_mounts_for_expiry() (diff) | |
| download | linux-a4d70278610e6bebe44a7b59a469fe7391387da6.tar.xz linux-a4d70278610e6bebe44a7b59a469fe7391387da6.zip | |
[PATCH] namespace.c: cleanup in mark_mounts_for_expiry()
This patch simplifies mark_mounts_for_expiry() by using detach_mnt() instead
of duplicating everything it does.
It should be an equivalent transformation except for righting the dput/mntput
order.
Al Viro said: "Looks sane".
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | fs/namespace.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 9d17541ebafa..ea555a36c314 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -880,24 +880,13 @@ void mark_mounts_for_expiry(struct list_head *mounts) /* check that it is still dead: the count should now be 2 - as * contributed by the vfsmount parent and the mntget above */ if (atomic_read(&mnt->mnt_count) == 2) { - struct vfsmount *xdmnt; - struct dentry *xdentry; + struct nameidata old_nd; /* delete from the namespace */ list_del_init(&mnt->mnt_list); - list_del_init(&mnt->mnt_child); - list_del_init(&mnt->mnt_hash); - mnt->mnt_mountpoint->d_mounted--; - - xdentry = mnt->mnt_mountpoint; - mnt->mnt_mountpoint = mnt->mnt_root; - xdmnt = mnt->mnt_parent; - mnt->mnt_parent = mnt; - + detach_mnt(mnt, &old_nd); spin_unlock(&vfsmount_lock); - - mntput(xdmnt); - dput(xdentry); + path_release(&old_nd); /* now lay it to rest if this was the last ref on the * superblock */ |