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| author | Al Viro <viro@zeniv.linux.org.uk> | 2011-11-24 18:22:03 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-01-03 22:56:58 -0500 |
| commit | c71053659e3bb27d44b79da0bb4abf5838c2060a (patch) | |
| tree | 59e86cc1602db35ffc2c3991953161f1619706b1 /fs/namespace.c | |
| parent | 7d6fec45a5131918b51dcd76da52f2ec86a85be6 (diff) | |
| download | lwn-c71053659e3bb27d44b79da0bb4abf5838c2060a.tar.gz lwn-c71053659e3bb27d44b79da0bb4abf5838c2060a.zip | |
vfs: spread struct mount - __lookup_mnt() result
switch __lookup_mnt() to returning struct mount *; callers adjusted.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index dda47fee6fdf..398eb2421494 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -464,20 +464,20 @@ static void free_vfsmnt(struct vfsmount *mnt) * @dir. If @dir is set return the first mount else return the last mount. * vfsmount_lock must be held for read or write. */ -struct vfsmount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry, +struct mount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry, int dir) { struct list_head *head = mount_hashtable + hash(mnt, dentry); struct list_head *tmp = head; - struct vfsmount *p, *found = NULL; + struct mount *p, *found = NULL; for (;;) { tmp = dir ? tmp->next : tmp->prev; p = NULL; if (tmp == head) break; - p = list_entry(tmp, struct vfsmount, mnt_hash); - if (p->mnt_parent == mnt && p->mnt_mountpoint == dentry) { + p = list_entry(tmp, struct mount, mnt.mnt_hash); + if (p->mnt.mnt_parent == mnt && p->mnt.mnt_mountpoint == dentry) { found = p; break; } @@ -491,13 +491,18 @@ struct vfsmount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry, */ struct vfsmount *lookup_mnt(struct path *path) { - struct vfsmount *child_mnt; + struct mount *child_mnt; br_read_lock(vfsmount_lock); - if ((child_mnt = __lookup_mnt(path->mnt, path->dentry, 1))) - mntget(child_mnt); - br_read_unlock(vfsmount_lock); - return child_mnt; + child_mnt = __lookup_mnt(path->mnt, path->dentry, 1); + if (child_mnt) { + mnt_add_count(child_mnt, 1); + br_read_unlock(vfsmount_lock); + return &child_mnt->mnt; + } else { + br_read_unlock(vfsmount_lock); + return NULL; + } } static inline int check_mnt(struct vfsmount *mnt) |