1 files changed, 5 insertions, 2 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e010000d4bc9..570cd44fe91b 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5944,6 +5944,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
         int nr_pages = 0;
         u32 *csums = dip->csums;
         int ret = 0;
+        int write = rw & REQ_WRITE;
 
         bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, start_sector, GFP_NOFS);
         if (!bio)
@@ -5980,7 +5981,8 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
                                 goto out_err;
                         }
 
-                        if (!skip_sum)
+                        /* Write's use the ordered csums */
+                        if (!write && !skip_sum)
                                 csums = csums + nr_pages;
                         start_sector += submit_len >> 9;
                         file_offset += submit_len;
@@ -6048,7 +6050,8 @@ static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode,
         }
         dip->csums = NULL;
 
-        if (!skip_sum) {
+        /* Write's use the ordered csum stuff, so we don't need dip->csums */
+        if (!write && !skip_sum) {
                 dip->csums = kmalloc(sizeof(u32) * bio->bi_vcnt, GFP_NOFS);
                 if (!dip->csums) {
                         kfree(dip);