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| author | Al Viro <viro@zeniv.linux.org.uk> | 2014-03-20 21:10:51 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-03-30 19:18:51 -0400 |
| commit | 38129a13e6e71f666e0468e99fdd932a687b4d7e (patch) | |
| tree | 438e817fdf7d224f9fda1186eb24b1bbc37a4b5c /fs/pnode.h | |
| parent | 0b1b901b5a98bb36943d10820efc796f7cd45ff3 (diff) | |
| download | linux-38129a13e6e71f666e0468e99fdd932a687b4d7e.tar.gz linux-38129a13e6e71f666e0468e99fdd932a687b4d7e.tar.bz2 linux-38129a13e6e71f666e0468e99fdd932a687b4d7e.zip | |
switch mnt_hash to hlist
fixes RCU bug - walking through hlist is safe in face of element moves,
since it's self-terminating. Cyclic lists are not - if we end up jumping
to another hash chain, we'll loop infinitely without ever hitting the
original list head.
[fix for dumb braino folded]
Spotted by: Max Kellermann <mk@cm4all.com>
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/pnode.h')
| -rw-r--r-- | fs/pnode.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/pnode.h b/fs/pnode.h index 59e7eda1851e..fc28a27fa892 100644 --- a/fs/pnode.h +++ b/fs/pnode.h @@ -36,8 +36,8 @@ static inline void set_mnt_shared(struct mount *mnt) void change_mnt_propagation(struct mount *, int); int propagate_mnt(struct mount *, struct mountpoint *, struct mount *, - struct list_head *); -int propagate_umount(struct list_head *); + struct hlist_head *); +int propagate_umount(struct hlist_head *); int propagate_mount_busy(struct mount *, int); void mnt_release_group_id(struct mount *); int get_dominating_id(struct mount *mnt, const struct path *root); |