vfs: spread struct mount - do_umount/propagate_mount_busy

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 14 insertions, 14 deletions

diff --git a/fs/namespace.c b/fs/namespace.c
index c11b99af53cf..17927f9eeca4 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1180,7 +1180,7 @@ int may_umount(struct vfsmount *mnt)
         int ret = 1;
         down_read(&namespace_sem);
         br_write_lock(vfsmount_lock);
-        if (propagate_mount_busy(mnt, 2))
+        if (propagate_mount_busy(real_mount(mnt), 2))
                 ret = 0;
         br_write_unlock(vfsmount_lock);
         up_read(&namespace_sem);
@@ -1246,13 +1246,13 @@ void umount_tree(struct mount *mnt, int propagate, struct list_head *kill)
 
 static void shrink_submounts(struct mount *mnt, struct list_head *umounts);
 
-static int do_umount(struct vfsmount *mnt, int flags)
+static int do_umount(struct mount *mnt, int flags)
 {
-        struct super_block *sb = mnt->mnt_sb;
+        struct super_block *sb = mnt->mnt.mnt_sb;
         int retval;
         LIST_HEAD(umount_list);
 
-        retval = security_sb_umount(mnt, flags);
+        retval = security_sb_umount(&mnt->mnt, flags);
         if (retval)
                 return retval;
 
@@ -1263,7 +1263,7 @@ static int do_umount(struct vfsmount *mnt, int flags)
          *  (2) the usage count == 1 [parent vfsmount] + 1 [sys_umount]
          */
         if (flags & MNT_EXPIRE) {
-                if (mnt == current->fs->root.mnt ||
+                if (&mnt->mnt == current->fs->root.mnt ||
                     flags & (MNT_FORCE | MNT_DETACH))
                         return -EINVAL;
 
@@ -1272,13 +1272,13 @@ static int do_umount(struct vfsmount *mnt, int flags)
                  * all race cases, but it's a slowpath.
                  */
                 br_write_lock(vfsmount_lock);
-                if (mnt_get_count(mnt) != 2) {
+                if (mnt_get_count(&mnt->mnt) != 2) {
                         br_write_unlock(vfsmount_lock);
                         return -EBUSY;
                 }
                 br_write_unlock(vfsmount_lock);
 
-                if (!xchg(&mnt->mnt_expiry_mark, 1))
+                if (!xchg(&mnt->mnt.mnt_expiry_mark, 1))
                         return -EAGAIN;
         }
 
@@ -1305,7 +1305,7 @@ static int do_umount(struct vfsmount *mnt, int flags)
          * /reboot - static binary that would close all descriptors and
          * call reboot(9). Then init(8) could umount root and exec /reboot.
          */
-        if (mnt == current->fs->root.mnt && !(flags & MNT_DETACH)) {
+        if (&mnt->mnt == current->fs->root.mnt && !(flags & MNT_DETACH)) {
                 /*
                  * Special case for "unmounting" root ...
                  * we just try to remount it readonly.
@@ -1322,12 +1322,12 @@ static int do_umount(struct vfsmount *mnt, int flags)
         event++;
 
         if (!(flags & MNT_DETACH))
-                shrink_submounts(real_mount(mnt), &umount_list);
+                shrink_submounts(mnt, &umount_list);
 
         retval = -EBUSY;
         if (flags & MNT_DETACH || !propagate_mount_busy(mnt, 2)) {
-                if (!list_empty(&mnt->mnt_list))
-                        umount_tree(real_mount(mnt), 1, &umount_list);
+                if (!list_empty(&mnt->mnt.mnt_list))
+                        umount_tree(mnt, 1, &umount_list);
                 retval = 0;
         }
         br_write_unlock(vfsmount_lock);
@@ -1369,7 +1369,7 @@ SYSCALL_DEFINE2(umount, char __user *, name, int, flags)
         if (!capable(CAP_SYS_ADMIN))
                 goto dput_and_out;
 
-        retval = do_umount(path.mnt, flags);
+        retval = do_umount(real_mount(path.mnt), flags);
 dput_and_out:
         /* we mustn't call path_put() as that would clear mnt_expiry_mark */
         dput(path.dentry);
@@ -2101,7 +2101,7 @@ void mark_mounts_for_expiry(struct list_head *mounts)
          */
         list_for_each_entry_safe(mnt, next, mounts, mnt.mnt_expire) {
                 if (!xchg(&mnt->mnt.mnt_expiry_mark, 1) ||
-                        propagate_mount_busy(&mnt->mnt, 1))
+                        propagate_mount_busy(mnt, 1))
                         continue;
                 list_move(&mnt->mnt.mnt_expire, &graveyard);
         }
@@ -2148,7 +2148,7 @@ resume:
                         goto repeat;
                 }
 
-                if (!propagate_mount_busy(&mnt->mnt, 1)) {
+                if (!propagate_mount_busy(mnt, 1)) {
                         list_move_tail(&mnt->mnt.mnt_expire, graveyard);
                         found++;
                 }