From 1bb41e6f3498f00361ff5f06329dcbd9caa968f0 Mon Sep 17 00:00:00 2001
From: Namjae Jeon <linkinjeon@gmail.com>
Date: Mon, 17 Dec 2012 16:02:56 -0800
Subject: [PATCH] --- yaml --- r: 346449 b: refs/heads/master c:
 f562146a3daf6aa0bbf2a1bc4b6b7da031ed5dcd h: refs/heads/master i:   346447:
 63ec31ae3189eea483fc7b77c0dacb0160ab3cb5 v: v3

---
 [refs]               | 2 +-
 trunk/fs/fat/inode.c | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 9d01c56e7427..c49d7b2608d3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6920d996e3fee4ac5dcb7d34cb290b6f67bb69d0
+refs/heads/master: f562146a3daf6aa0bbf2a1bc4b6b7da031ed5dcd
diff --git a/trunk/fs/fat/inode.c b/trunk/fs/fat/inode.c
index 5bafaad00530..7b186a5d51b1 100644
--- a/trunk/fs/fat/inode.c
+++ b/trunk/fs/fat/inode.c
@@ -26,6 +26,7 @@
 #include <linux/writeback.h>
 #include <linux/log2.h>
 #include <linux/hash.h>
+#include <linux/blkdev.h>
 #include <asm/unaligned.h>
 #include "fat.h"
 
@@ -1431,6 +1432,14 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat,
 		goto out_fail;
 	}
 
+	if (sbi->options.discard) {
+		struct request_queue *q = bdev_get_queue(sb->s_bdev);
+		if (!blk_queue_discard(q))
+			fat_msg(sb, KERN_WARNING,
+					"mounting with \"discard\" option, but "
+					"the device does not support discard");
+	}
+
 	return 0;
 
 out_invalid: