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| author | Al Viro <viro@zeniv.linux.org.uk> | 2011-11-25 06:33:11 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-01-04 04:57:09 +0100 |
| commit | 900148dcac6bc93ca688d64a7f9a9f8d706e0d1c (patch) | |
| tree | 69077133e37e105fc88873429f33469c67a840c6 /fs | |
| parent | vfs: spread struct mount - do_add_mount and graft_tree (diff) | |
| download | linux-900148dcac6bc93ca688d64a7f9a9f8d706e0d1c.tar.xz linux-900148dcac6bc93ca688d64a7f9a9f8d706e0d1c.zip | |
vfs: spread struct mount - mntput_no_expire
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/namespace.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 6b5e0436acfd..3e95cc26dda6 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -763,9 +763,8 @@ static inline void mntfree(struct mount *mnt) deactivate_super(sb); } -static void mntput_no_expire(struct vfsmount *m) +static void mntput_no_expire(struct mount *mnt) { - struct mount *mnt = real_mount(m); put_again: #ifdef CONFIG_SMP br_read_lock(vfsmount_lock); @@ -792,7 +791,7 @@ put_again: mnt_add_count(mnt, mnt->mnt.mnt_pinned + 1); mnt->mnt.mnt_pinned = 0; br_write_unlock(vfsmount_lock); - acct_auto_close_mnt(m); + acct_auto_close_mnt(&mnt->mnt); goto put_again; } br_write_unlock(vfsmount_lock); @@ -805,7 +804,7 @@ void mntput(struct vfsmount *mnt) /* avoid cacheline pingpong, hope gcc doesn't get "smart" */ if (unlikely(mnt->mnt_expiry_mark)) mnt->mnt_expiry_mark = 0; - mntput_no_expire(mnt); + mntput_no_expire(real_mount(mnt)); } } EXPORT_SYMBOL(mntput); @@ -1351,6 +1350,7 @@ static int do_umount(struct mount *mnt, int flags) SYSCALL_DEFINE2(umount, char __user *, name, int, flags) { struct path path; + struct mount *mnt; int retval; int lookup_flags = 0; @@ -1363,6 +1363,7 @@ SYSCALL_DEFINE2(umount, char __user *, name, int, flags) retval = user_path_at(AT_FDCWD, name, lookup_flags, &path); if (retval) goto out; + mnt = real_mount(path.mnt); retval = -EINVAL; if (path.dentry != path.mnt->mnt_root) goto dput_and_out; @@ -1373,11 +1374,11 @@ SYSCALL_DEFINE2(umount, char __user *, name, int, flags) if (!capable(CAP_SYS_ADMIN)) goto dput_and_out; - retval = do_umount(real_mount(path.mnt), flags); + retval = do_umount(mnt, flags); dput_and_out: /* we mustn't call path_put() as that would clear mnt_expiry_mark */ dput(path.dentry); - mntput_no_expire(path.mnt); + mntput_no_expire(mnt); out: return retval; } |