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| author | Chuck Lever <chuck.lever@oracle.com> | 2023-11-21 17:40:39 +0100 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2024-01-07 23:54:27 +0100 |
| commit | f09c36c8dffc7dcf796b862bffdda5753bec84ef (patch) | |
| tree | 5c91052e606788b6d95f4496222dec813dd0f9e9 /net/sunrpc/xprtrdma/svc_rdma_rw.c | |
| parent | svcrdma: Add an async version of svc_rdma_send_ctxt_put() (diff) | |
| download | linux-f09c36c8dffc7dcf796b862bffdda5753bec84ef.tar.xz linux-f09c36c8dffc7dcf796b862bffdda5753bec84ef.zip | |
svcrdma: Add an async version of svc_rdma_write_info_free()
DMA unmapping can take quite some time, so it should not be handled
in a single-threaded completion handler. Defer releasing write_info
structs to the recently-added workqueue.
With this patch, DMA unmapping can be handled in parallel, and it
does not cause head-of-queue blocking of Write completions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/svc_rdma_rw.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_rw.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_rw.c b/net/sunrpc/xprtrdma/svc_rdma_rw.c index e460e25a1d6d..de1ec3220aab 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_rw.c +++ b/net/sunrpc/xprtrdma/svc_rdma_rw.c @@ -227,6 +227,7 @@ struct svc_rdma_write_info { unsigned int wi_next_off; struct svc_rdma_chunk_ctxt wi_cc; + struct work_struct wi_work; }; static struct svc_rdma_write_info * @@ -248,12 +249,21 @@ svc_rdma_write_info_alloc(struct svcxprt_rdma *rdma, return info; } -static void svc_rdma_write_info_free(struct svc_rdma_write_info *info) +static void svc_rdma_write_info_free_async(struct work_struct *work) { + struct svc_rdma_write_info *info; + + info = container_of(work, struct svc_rdma_write_info, wi_work); svc_rdma_cc_release(&info->wi_cc, DMA_TO_DEVICE); kfree(info); } +static void svc_rdma_write_info_free(struct svc_rdma_write_info *info) +{ + INIT_WORK(&info->wi_work, svc_rdma_write_info_free_async); + queue_work(svcrdma_wq, &info->wi_work); +} + /** * svc_rdma_write_done - Write chunk completion * @cq: controlling Completion Queue |