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lib/ftl: Fix size of write buffer submission queue

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SPDK ring size used for write buffer submission queue
must be increased if required number of batches is a
power of two.

Change-Id: I9b9f885064cf6f0f5fe94b0ed4f9d49a4e5c0cd0
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/445721
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Wojciech Malikowski 2019-02-21 10:06:58 -05:00 committed by Jim Harris
parent a427139e15
commit 1442b5f28a
1 changed files with 3 additions and 4 deletions
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7
lib/ftl/ftl_rwb.c
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@ -178,7 +178,7 @@ ftl_rwb_init(const struct spdk_ftl_conf *conf, size_t xfer_size, size_t md_size)
{
struct ftl_rwb *rwb;
struct ftl_rwb_batch *batch;
size_t ring_size, i;
size_t i;
rwb = calloc(1, sizeof(*rwb));
if (!rwb) {
@ -191,14 +191,13 @@ ftl_rwb_init(const struct spdk_ftl_conf *conf, size_t xfer_size, size_t md_size)
rwb->md_size = md_size;
rwb->num_batches = conf->rwb_size / (FTL_BLOCK_SIZE * xfer_size);
ring_size = spdk_align32pow2(rwb->num_batches);
rwb->batches = calloc(rwb->num_batches, sizeof(*rwb->batches));
if (!rwb->batches) {
goto error;
}
rwb->submit_queue = spdk_ring_create(SPDK_RING_TYPE_MP_SC, ring_size,
rwb->submit_queue = spdk_ring_create(SPDK_RING_TYPE_MP_SC,
spdk_align32pow2(rwb->num_batches + 1),
SPDK_ENV_SOCKET_ID_ANY);
if (!rwb->submit_queue) {
SPDK_ERRLOG("Failed to create submission queue\n");