This patch changes the functions may_umount and may_umount_tree
to boolean functions to aid code readability.

Signed-off-by: Ian Kent <[EMAIL PROTECTED]>


--- linux-2.6.15-mm4/fs/namespace.c.may_umount-to-boolean       2006-01-15 
16:06:59.000000000 +0800
+++ linux-2.6.15-mm4/fs/namespace.c     2006-01-15 16:08:36.000000000 +0800
@@ -421,9 +421,9 @@ int may_umount_tree(struct vfsmount *mnt
        spin_unlock(&vfsmount_lock);
 
        if (actual_refs > minimum_refs)
-               return -EBUSY;
+               return 0;
 
-       return 0;
+       return 1;
 }
 
 EXPORT_SYMBOL(may_umount_tree);
@@ -443,10 +443,10 @@ EXPORT_SYMBOL(may_umount_tree);
  */
 int may_umount(struct vfsmount *mnt)
 {
-       int ret = 0;
+       int ret = 1;
        spin_lock(&vfsmount_lock);
        if (propagate_mount_busy(mnt, 2))
-               ret = -EBUSY;
+               ret = 0;
        spin_unlock(&vfsmount_lock);
        return ret;
 }
--- linux-2.6.15-mm4/fs/autofs4/root.c.may_umount-to-boolean    2006-01-15 
16:10:22.000000000 +0800
+++ linux-2.6.15-mm4/fs/autofs4/root.c  2006-01-15 16:11:35.000000000 +0800
@@ -699,7 +699,7 @@ static inline int autofs4_ask_umount(str
 {
        int status = 0;
 
-       if (may_umount(mnt) == 0)
+       if (may_umount(mnt))
                status = 1;
 
        DPRINTK("returning %d", status);
--- linux-2.6.15-mm4/fs/autofs4/expire.c.may_umount-to-boolean  2006-01-15 
16:10:34.000000000 +0800
+++ linux-2.6.15-mm4/fs/autofs4/expire.c        2006-01-15 16:10:54.000000000 
+0800
@@ -64,7 +64,7 @@ static int autofs4_mount_busy(struct vfs
                goto done;
 
        /* Update the expiry counter if fs is busy */
-       if (may_umount_tree(mnt)) {
+       if (!may_umount_tree(mnt)) {
                struct autofs_info *ino = autofs4_dentry_ino(top);
                ino->last_used = jiffies;
                goto done;
--- linux-2.6.15-mm4/fs/autofs/dirhash.c.may_umount-to-boolean  2006-01-15 
16:09:08.000000000 +0800
+++ linux-2.6.15-mm4/fs/autofs/dirhash.c        2006-01-15 16:09:46.000000000 
+0800
@@ -92,7 +92,7 @@ struct autofs_dir_ent *autofs_expire(str
                        ;
                dput(dentry);
 
-               if ( may_umount(mnt) == 0 ) {
+               if ( may_umount(mnt) ) {
                        mntput(mnt);
                        DPRINTK(("autofs: signaling expire on %s\n", 
ent->name));
                        return ent; /* Expirable! */

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