From: Caleb Sander Mateos <csander@purestorage.com>
To: Ming Lei <ming.lei@redhat.com>, Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org,
Caleb Sander Mateos <csander@purestorage.com>
Subject: [PATCH v2 05/14] ublk: remove task variable from __ublk_ch_uring_cmd()
Date: Fri, 20 Jun 2025 09:09:59 -0600 [thread overview]
Message-ID: <20250620151008.3976463-6-csander@purestorage.com> (raw)
In-Reply-To: <20250620151008.3976463-1-csander@purestorage.com>
The variable is computed from a simple expression and used once, so just
replace it with the expression.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
---
drivers/block/ublk_drv.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 8df70a5fb129..7635105c1596 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -2172,11 +2172,10 @@ static bool ublk_get_data(const struct ublk_queue *ubq, struct ublk_io *io)
static int __ublk_ch_uring_cmd(struct io_uring_cmd *cmd,
unsigned int issue_flags,
const struct ublksrv_io_cmd *ub_cmd)
{
struct ublk_device *ub = cmd->file->private_data;
- struct task_struct *task;
struct ublk_queue *ubq;
struct ublk_io *io;
u32 cmd_op = cmd->cmd_op;
unsigned tag = ub_cmd->tag;
int ret;
@@ -2207,12 +2206,11 @@ static int __ublk_ch_uring_cmd(struct io_uring_cmd *cmd,
ublk_prep_cancel(cmd, issue_flags, ubq, tag);
return -EIOCBQUEUED;
}
- task = READ_ONCE(io->task);
- if (task != current)
+ if (READ_ONCE(io->task) != current)
goto out;
/* there is pending io cmd, something must be wrong */
if (io->flags & UBLK_IO_FLAG_ACTIVE) {
ret = -EBUSY;
--
2.45.2
next prev parent reply other threads:[~2025-06-20 15:10 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-20 15:09 [PATCH v2 00/14] ublk: allow off-daemon zero-copy buffer registration Caleb Sander Mateos
2025-06-20 15:09 ` [PATCH v2 01/14] ublk: use vmalloc for ublk_device's __queues Caleb Sander Mateos
2025-06-23 7:20 ` Ming Lei
2025-06-20 15:09 ` [PATCH v2 02/14] ublk: remove struct ublk_rq_data Caleb Sander Mateos
2025-06-23 8:02 ` Ming Lei
2025-06-20 15:09 ` [PATCH v2 03/14] ublk: check cmd_op first Caleb Sander Mateos
2025-06-20 15:09 ` [PATCH v2 04/14] ublk: handle UBLK_IO_FETCH_REQ earlier Caleb Sander Mateos
2025-06-20 15:09 ` Caleb Sander Mateos [this message]
2025-06-20 15:10 ` [PATCH v2 06/14] ublk: consolidate UBLK_IO_FLAG_{ACTIVE,OWNED_BY_SRV} checks Caleb Sander Mateos
2025-06-20 15:10 ` [PATCH v2 07/14] ublk: move ublk_prep_cancel() to case UBLK_IO_COMMIT_AND_FETCH_REQ Caleb Sander Mateos
2025-06-20 15:10 ` [PATCH v2 08/14] ublk: don't take ublk_queue in ublk_unregister_io_buf() Caleb Sander Mateos
2025-06-23 8:29 ` Ming Lei
2025-06-20 15:10 ` [PATCH v2 09/14] ublk: allow UBLK_IO_(UN)REGISTER_IO_BUF on any task Caleb Sander Mateos
2025-06-23 9:07 ` Ming Lei
2025-06-20 15:10 ` [PATCH v2 10/14] ublk: return early if blk_should_fake_timeout() Caleb Sander Mateos
2025-06-23 9:08 ` Ming Lei
2025-06-20 15:10 ` [PATCH v2 11/14] ublk: optimize UBLK_IO_REGISTER_IO_BUF on daemon task Caleb Sander Mateos
2025-06-23 9:44 ` Ming Lei
2025-06-20 15:10 ` [PATCH v2 12/14] ublk: optimize UBLK_IO_UNREGISTER_IO_BUF " Caleb Sander Mateos
2025-06-23 9:45 ` Ming Lei
2025-06-20 15:10 ` [PATCH v2 13/14] ublk: remove ubq checks from ublk_{get,put}_req_ref() Caleb Sander Mateos
2025-06-23 9:49 ` Ming Lei
2025-06-20 15:10 ` [PATCH v2 14/14] ublk: cache-align struct ublk_io Caleb Sander Mateos
2025-06-23 9:49 ` Ming Lei
2025-06-27 0:47 ` [PATCH v2 00/14] ublk: allow off-daemon zero-copy buffer registration Jens Axboe
2025-06-27 0:48 ` Jens Axboe
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