ext4: use KERN_WARNING for warning messages

Some messages printed related to a WARN_ON(1) were printed using
KERN_NOTICE.  Use KERN_WARNING or ext4_warning() instead so that
context related to the WARN_ON() is printed at the same printk warning
level (and log files, etc.)

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 2fa18bb..b85d5da 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -343,7 +343,7 @@
 	spin_lock(&ei->i_block_reservation_lock);
 	trace_ext4_da_update_reserve_space(inode, used, quota_claim);
 	if (unlikely(used > ei->i_reserved_data_blocks)) {
-		ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, used %d "
+		ext4_warning(inode->i_sb, "%s: ino %lu, used %d "
 			 "with only %d reserved data blocks",
 			 __func__, inode->i_ino, used,
 			 ei->i_reserved_data_blocks);
@@ -352,7 +352,7 @@
 	}
 
 	if (unlikely(ei->i_allocated_meta_blocks > ei->i_reserved_meta_blocks)) {
-		ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, allocated %d "
+		ext4_warning(inode->i_sb, "%s: ino %lu, allocated %d "
 			 "with only %d reserved metadata blocks\n", __func__,
 			 inode->i_ino, ei->i_allocated_meta_blocks,
 			 ei->i_reserved_meta_blocks);
@@ -1263,7 +1263,7 @@
 		 * function is called from invalidate page, it's
 		 * harmless to return without any action.
 		 */
-		ext4_msg(inode->i_sb, KERN_NOTICE, "ext4_da_release_space: "
+		ext4_warning(inode->i_sb, "ext4_da_release_space: "
 			 "ino %lu, to_free %d with only %d reserved "
 			 "data blocks", inode->i_ino, to_free,
 			 ei->i_reserved_data_blocks);