From: Caleb Sander Mateos <csander@purestorage.com>
To: Ming Lei <ming.lei@redhat.com>
Cc: Uday Shankar <ushankar@purestorage.com>,
linux-block@vger.kernel.org,
Caleb Sander Mateos <csander@purestorage.com>
Subject: [PATCH 4/8] ublk: consolidate UBLK_IO_FLAG_{ACTIVE,OWNED_BY_SRV} checks
Date: Fri, 6 Jun 2025 15:40:07 -0600 [thread overview]
Message-ID: <20250606214011.2576398-5-csander@purestorage.com> (raw)
In-Reply-To: <20250606214011.2576398-1-csander@purestorage.com>
UBLK_IO_FLAG_ACTIVE and UBLK_IO_FLAG_OWNED_BY_SRV are mutually
exclusive. So just check that UBLK_IO_FLAG_OWNED_BY_SRV is set in
__ublk_ch_uring_cmd(); that implies UBLK_IO_FLAG_ACTIVE is unset.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
---
drivers/block/ublk_drv.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 76148145d8fe..295beb6ab4a5 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -2208,18 +2208,15 @@ static int __ublk_ch_uring_cmd(struct io_uring_cmd *cmd,
if (READ_ONCE(io->task) != current)
goto out;
/* there is pending io cmd, something must be wrong */
- if (io->flags & UBLK_IO_FLAG_ACTIVE) {
+ if (!(io->flags & UBLK_IO_FLAG_OWNED_BY_SRV)) {
ret = -EBUSY;
goto out;
}
- if (!(io->flags & UBLK_IO_FLAG_OWNED_BY_SRV))
- goto out;
-
/*
* ensure that the user issues UBLK_IO_NEED_GET_DATA
* iff the driver have set the UBLK_IO_FLAG_NEED_GET_DATA.
*/
if ((!!(io->flags & UBLK_IO_FLAG_NEED_GET_DATA))
--
2.45.2
next prev parent reply other threads:[~2025-06-06 21:40 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-06 21:40 [PATCH 0/8] ublk: allow off-daemon zero-copy buffer registration Caleb Sander Mateos
2025-06-06 21:40 ` [PATCH 1/8] ublk: check cmd_op first Caleb Sander Mateos
2025-06-09 6:57 ` Ming Lei
2025-06-06 21:40 ` [PATCH 2/8] ublk: handle UBLK_IO_FETCH_REQ first Caleb Sander Mateos
2025-06-09 7:01 ` Ming Lei
2025-06-06 21:40 ` [PATCH 3/8] ublk: remove task variable from __ublk_ch_uring_cmd() Caleb Sander Mateos
2025-06-09 7:02 ` Ming Lei
2025-06-06 21:40 ` Caleb Sander Mateos [this message]
2025-06-09 7:19 ` [PATCH 4/8] ublk: consolidate UBLK_IO_FLAG_{ACTIVE,OWNED_BY_SRV} checks Ming Lei
2025-06-06 21:40 ` [PATCH 5/8] ublk: move ublk_prep_cancel() to case UBLK_IO_COMMIT_AND_FETCH_REQ Caleb Sander Mateos
2025-06-09 7:21 ` Ming Lei
2025-06-06 21:40 ` [PATCH 6/8] ublk: allow UBLK_IO_(UN)REGISTER_IO_BUF on any task Caleb Sander Mateos
2025-06-09 7:34 ` Ming Lei
2025-06-09 17:39 ` Caleb Sander Mateos
2025-06-09 12:34 ` Ming Lei
2025-06-09 17:49 ` Caleb Sander Mateos
2025-06-10 1:34 ` Ming Lei
2025-06-11 15:47 ` Caleb Sander Mateos
2025-06-12 2:31 ` Ming Lei
2025-06-06 21:40 ` [PATCH 7/8] ublk: optimize UBLK_IO_REGISTER_IO_BUF on daemon task Caleb Sander Mateos
2025-06-09 9:02 ` Ming Lei
2025-06-09 17:14 ` Caleb Sander Mateos
2025-06-10 1:22 ` Ming Lei
2025-06-11 15:36 ` Caleb Sander Mateos
2025-06-12 4:25 ` Ming Lei
2025-06-06 21:40 ` [PATCH 8/8] ublk: remove ubq checks from ublk_{get,put}_req_ref() Caleb Sander Mateos
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