fat: do not send discards as barriers
Christoph Hellwig [Wed, 18 Aug 2010 09:29:19 +0000 (05:29 -0400)]
fat already uses synchronous discards, no need to add I/O barriers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

fs/fat/fatent.c

index 3a56a82..f9a0b7a 100644 (file)
@@ -579,7 +579,7 @@ int fat_free_clusters(struct inode *inode, int cluster)
                                        fat_clus_to_blknr(sbi, first_cl),
                                        nr_clus * sbi->sec_per_clus,
                                        GFP_NOFS,
-                                       BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
+                                       BLKDEV_IFL_WAIT);
 
                                first_cl = cluster;
                        }