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authorLars Ellenberg <lars.ellenberg@linbit.com>2014-02-11 08:56:53 +0100
committerPhilipp Reisner <philipp.reisner@linbit.com>2014-07-10 18:34:54 +0200
commit2ed912e9d35b4d7d766a530f5dd14513a3ab9f64 (patch)
tree21b9c2a4133567c6587b6287ad051eae4e86d5ec /drivers/block/drbd/drbd_actlog.c
parent720979fb9048bc6b4460b39864c64d7fc920a10f (diff)
downloadlinux-2ed912e9d35b4d7d766a530f5dd14513a3ab9f64.tar.gz
linux-2ed912e9d35b4d7d766a530f5dd14513a3ab9f64.tar.xz
drbd: explicitly submit meta data requests with REQ_NOIDLE
For some reason we have assumed NOIDLE was implied by one of the other flags we set. It is not (anymore?). Explicitly set REQ_NOIDLE for synchronous meta data updates, or we can seriously starve random writes when using CFQ. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_actlog.c')
-rw-r--r--drivers/block/drbd/drbd_actlog.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 278c31f24639..14b2f27291aa 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -150,7 +150,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
if ((rw & WRITE) && !test_bit(MD_NO_FUA, &device->flags))
rw |= REQ_FUA | REQ_FLUSH;
- rw |= REQ_SYNC;
+ rw |= REQ_SYNC | REQ_NOIDLE;
bio = bio_alloc_drbd(GFP_NOIO);
bio->bi_bdev = bdev->md_bdev;