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authorAnand Jain <anand.jain@oracle.com>2017-04-06 11:22:52 +0800
committerDavid Sterba <dsterba@suse.com>2017-04-18 16:12:07 +0200
commit13e88e1560d6014838e2dd9f8b9cf8ec9a8d86e6 (patch)
treedfc4698fc5983b4c4545abc8e425a11e426d5645 /fs/btrfs
parent28d70e237dac905cd8d1896af10216b7d2bced24 (diff)
downloadlinux-13e88e1560d6014838e2dd9f8b9cf8ec9a8d86e6.tar.bz2
btrfs: delete unused member nobarriers
The last consumer of nobarriers is removed by the commit [1] and sync won't fail with EOPNOTSUPP anymore. Thus, now when write cache is write through it just return success without actually transpiring such a request to the block device/lun. [1] commit b25de9d6da49b1a8760a89672283128aa8c78345 block: remove BIO_EOPNOTSUPP And, as the device/lun write cache state may change dynamically saving such as state won't help either. So deleting the member nobarriers. Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/disk-io.c3
-rw-r--r--fs/btrfs/volumes.h1
2 files changed, 0 insertions, 4 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index a9314fe494c9..e070e463ad8b 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3521,9 +3521,6 @@ static int write_dev_flush(struct btrfs_device *device, int wait)
struct bio *bio;
int ret = 0;
- if (device->nobarriers)
- return 0;
-
if (wait) {
bio = device->flush_bio;
if (!bio)
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index def39b5a8d9e..c7d0fbc915ca 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -123,7 +123,6 @@ struct btrfs_device {
struct list_head resized_list;
/* for sending down flush barriers */
- int nobarriers;
struct bio *flush_bio;
struct completion flush_wait;