diff options
| author | David Disseldorp <ddiss@suse.de> | 2016-04-05 11:13:39 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-04-05 22:11:37 +0200 |
| commit | 2224d879c7c0f85c14183ef82eb48bd875ceb599 (patch) | |
| tree | 22b66ced5f19d301f0bf652842424d596e527769 /drivers/block | |
| parent | 9735a22799b9214d17d3c231fe377fc852f042e9 (diff) | |
| download | linux-2224d879c7c0f85c14183ef82eb48bd875ceb599.tar.bz2 | |
rbd: use GFP_NOIO consistently for request allocations
As of 5a60e87603c4c533492c515b7f62578189b03c9c, RBD object request
allocations are made via rbd_obj_request_create() with GFP_NOIO.
However, subsequent OSD request allocations in rbd_osd_req_create*()
use GFP_ATOMIC.
With heavy page cache usage (e.g. OSDs running on same host as krbd
client), rbd_osd_req_create() order-1 GFP_ATOMIC allocations have been
observed to fail, where direct reclaim would have allowed GFP_NOIO
allocations to succeed.
Cc: stable@vger.kernel.org # 3.18+
Suggested-by: Vlastimil Babka <vbabka@suse.cz>
Suggested-by: Neil Brown <neilb@suse.com>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rbd.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 9c6234428607..94a1843b0426 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1953,7 +1953,7 @@ static struct ceph_osd_request *rbd_osd_req_create( osdc = &rbd_dev->rbd_client->client->osdc; osd_req = ceph_osdc_alloc_request(osdc, snapc, num_ops, false, - GFP_ATOMIC); + GFP_NOIO); if (!osd_req) return NULL; /* ENOMEM */ @@ -2002,7 +2002,7 @@ rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request) rbd_dev = img_request->rbd_dev; osdc = &rbd_dev->rbd_client->client->osdc; osd_req = ceph_osdc_alloc_request(osdc, snapc, num_osd_ops, - false, GFP_ATOMIC); + false, GFP_NOIO); if (!osd_req) return NULL; /* ENOMEM */ @@ -2504,7 +2504,7 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request, bio_chain_clone_range(&bio_list, &bio_offset, clone_size, - GFP_ATOMIC); + GFP_NOIO); if (!obj_request->bio_list) goto out_unwind; } else if (type == OBJ_REQUEST_PAGES) { |