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authorSagi Grimberg <sagig@mellanox.com>2015-12-01 19:18:03 +0100
committerDoug Ledford <dledford@redhat.com>2015-12-07 23:20:11 +0100
commit09c0c0bea500a9ad362589990ee316c9b2482f44 (patch)
treeb4b259763691d05d1443fc36566166248b98073b /drivers/infiniband
parentIB/srp: Fix a memory leak (diff)
downloadlinux-09c0c0bea500a9ad362589990ee316c9b2482f44.tar.xz
linux-09c0c0bea500a9ad362589990ee316c9b2482f44.zip
IB/srp: Fix possible send queue overflow
When using work request based memory registration (fast_reg) we must reserve SQ entries for registration and invalidation in addition to send operations. Each IO consumes 3 SQ entries (registration, send, invalidation) so we need to allocate 3x larger send-queue instead of 2x. Signed-off-by: Sagi Grimberg <sagig@mellanox.com> CC: Stable <stable@vger.kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index a074dad28bab..c7a95d2dc164 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -488,7 +488,7 @@ static int srp_create_ch_ib(struct srp_rdma_ch *ch)
struct ib_qp *qp;
struct ib_fmr_pool *fmr_pool = NULL;
struct srp_fr_pool *fr_pool = NULL;
- const int m = 1 + dev->use_fast_reg;
+ const int m = dev->use_fast_reg ? 3 : 1;
struct ib_cq_init_attr cq_attr = {};
int ret;