UBIFS: use GFP_NOFS properly

This patch fixes a brown-paperbag bug which was introduced by me:
I used incorrect "GFP_KERNEL | GFP_NOFS" allocation flags to make
sure my allocations do not cause write-back. But the correct form
is "GFP_NOFS".

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index 0a3c2c3..0c9c69b 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -1633,7 +1633,7 @@
 	if (!(ubifs_chk_flags & UBIFS_CHK_LPROPS))
 		return 0;
 
-	buf = p = __vmalloc(c->leb_size, GFP_KERNEL | GFP_NOFS, PAGE_KERNEL);
+	buf = p = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
 	if (!buf) {
 		ubifs_err("cannot allocate memory for ltab checking");
 		return 0;
@@ -1885,7 +1885,7 @@
 
 	printk(KERN_DEBUG "(pid %d) start dumping LEB %d\n",
 	       current->pid, lnum);
-	buf = p = __vmalloc(c->leb_size, GFP_KERNEL | GFP_NOFS, PAGE_KERNEL);
+	buf = p = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
 	if (!buf) {
 		ubifs_err("cannot allocate memory to dump LPT");
 		return;