| Message ID | 1453251758-23579-1-git-send-email-kamal@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 3dace1d..2bfa995 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -496,7 +496,7 @@ 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; int ret; init_attr = kzalloc(sizeof *init_attr, GFP_KERNEL);
This is a note to let you know that I have just added a patch titled IB/srp: Fix possible send queue overflow to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue This patch is scheduled to be released in version 3.19.8-ckt13. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.19.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Kamal ---8<------------------------------------------------------------ From 0695dd9e6d26ebec27ad571051af635f710a7b7e Mon Sep 17 00:00:00 2001 From: Sagi Grimberg <sagig@mellanox.com> Date: Tue, 1 Dec 2015 10:18:03 -0800 Subject: IB/srp: Fix possible send queue overflow commit 09c0c0bea500a9ad362589990ee316c9b2482f44 upstream. 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> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/infiniband/ulp/srp/ib_srp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 1.9.1