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bdev: move adding IOs to the nomem_io queue to functions

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Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I0da93c55371652c5725da6cf602fa40391670da3
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/17867
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Konrad Sztyber 2023-04-27 15:59:40 +02:00 committed by David Ko
parent 6bb629ffa7
commit 268f5ee272
1 changed files with 28 additions and 10 deletions
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38
lib/bdev/bdev.c
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@ -915,6 +915,31 @@ bdev_io_use_accel_sequence(struct spdk_bdev_io *bdev_io)
return bdev_io->internal.accel_sequence;
}
static inline void
bdev_queue_nomem_io_head(struct spdk_bdev_shared_resource *shared_resource,
struct spdk_bdev_io *bdev_io)
{
/* Wait for some of the outstanding I/O to complete before we retry any of the nomem_io.
* Normally we will wait for NOMEM_THRESHOLD_COUNT I/O to complete but for low queue depth
* channels we will instead wait for half to complete.
*/
shared_resource->nomem_threshold = spdk_max((int64_t)shared_resource->io_outstanding / 2,
(int64_t)shared_resource->io_outstanding - NOMEM_THRESHOLD_COUNT);
TAILQ_INSERT_HEAD(&shared_resource->nomem_io, bdev_io, internal.link);
}
static inline void
bdev_queue_nomem_io_tail(struct spdk_bdev_shared_resource *shared_resource,
struct spdk_bdev_io *bdev_io)
{
/* We only queue IOs at the end of the nomem_io queue if they're submitted by the user while
* the queue isn't empty, so we don't need to update the nomem_threshold here */
assert(!TAILQ_EMPTY(&shared_resource->nomem_io));
TAILQ_INSERT_TAIL(&shared_resource->nomem_io, bdev_io, internal.link);
}
void
spdk_bdev_io_set_buf(struct spdk_bdev_io *bdev_io, void *buf, size_t len)
{
@ -1365,15 +1390,8 @@ _bdev_io_handle_no_mem(struct spdk_bdev_io *bdev_io)
if (spdk_unlikely(bdev_io->internal.status == SPDK_BDEV_IO_STATUS_NOMEM)) {
bdev_io->internal.status = SPDK_BDEV_IO_STATUS_PENDING;
TAILQ_INSERT_HEAD(&shared_resource->nomem_io, bdev_io, internal.link);
/*
* Wait for some of the outstanding I/O to complete before we
* retry any of the nomem_io. Normally we will wait for
* NOMEM_THRESHOLD_COUNT I/O to complete but for low queue
* depth channels we will instead wait for half to complete.
*/
shared_resource->nomem_threshold = spdk_max((int64_t)shared_resource->io_outstanding / 2,
(int64_t)shared_resource->io_outstanding - NOMEM_THRESHOLD_COUNT);
bdev_queue_nomem_io_head(shared_resource, bdev_io);
/* If bdev module completed an I/O that has an accel sequence with NOMEM status, the
* ownership of that sequence is transferred back to the bdev layer, so we need to
* restore internal.accel_sequence to make sure that the sequence is handled
@ -2489,7 +2507,7 @@ bdev_io_do_submit(struct spdk_bdev_channel *bdev_ch, struct spdk_bdev_io *bdev_i
bdev_submit_request(bdev, ch, bdev_io);
bdev_io->internal.in_submit_request = false;
} else {
TAILQ_INSERT_TAIL(&shared_resource->nomem_io, bdev_io, internal.link);
bdev_queue_nomem_io_tail(shared_resource, bdev_io);
}
}