X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=fs%2Fautofs4%2Fwaitq.c;h=6d87bb15632613028397c92aaa55c047b3ca5802;hb=bb979d7fc360bc37cbaff43a6fafceb897cb5e47;hp=bcb6c5265467f4306721848e7076b327f0151aa2;hpb=eb3b176796b0e53fd26fce86847231542eb0d198;p=linux-2.6-omap-h63xx.git

diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index bcb6c526546..6d87bb15632 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -328,16 +328,27 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
 	if (sbi->catatonic)
 		return -ENOENT;
 
-	if (!dentry->d_inode &&
-	    (sbi->type & (AUTOFS_TYPE_DIRECT | AUTOFS_TYPE_OFFSET)))
-		return -ENOENT;
+	if (!dentry->d_inode) {
+		/*
+		 * A wait for a negative dentry is invalid for certain
+		 * cases. A direct or offset mount "always" has its mount
+		 * point directory created and so the request dentry must
+		 * be positive or the map key doesn't exist. The situation
+		 * is very similar for indirect mounts except only dentrys
+		 * in the root of the autofs file system may be negative.
+		 */
+		if (sbi->type & AUTOFS_TYPE_TRIGGER)
+			return -ENOENT;
+		else if (!IS_ROOT(dentry->d_parent))
+			return -ENOENT;
+	}
 
 	name = kmalloc(NAME_MAX + 1, GFP_KERNEL);
 	if (!name)
 		return -ENOMEM;
 
 	/* If this is a direct mount request create a dummy name */
-	if (IS_ROOT(dentry) && (sbi->type & AUTOFS_TYPE_DIRECT))
+	if (IS_ROOT(dentry) && sbi->type & AUTOFS_TYPE_TRIGGER)
 		qstr.len = sprintf(name, "%p", dentry);
 	else {
 		qstr.len = autofs4_getpath(sbi, dentry, &name);
@@ -395,11 +406,11 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
 				type = autofs_ptype_expire_multi;
 		} else {
 			if (notify == NFY_MOUNT)
-				type = (sbi->type & AUTOFS_TYPE_DIRECT) ?
+				type = (sbi->type & AUTOFS_TYPE_TRIGGER) ?
 					autofs_ptype_missing_direct :
 					 autofs_ptype_missing_indirect;
 			else
-				type = (sbi->type & AUTOFS_TYPE_DIRECT) ?
+				type = (sbi->type & AUTOFS_TYPE_TRIGGER) ?
 					autofs_ptype_expire_direct :
 					autofs_ptype_expire_indirect;
 		}