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From: Hanna Reitz <hreitz@redhat.com>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, Hanna Reitz <hreitz@redhat.com>,
	Kevin Wolf <kwolf@redhat.com>, John Snow <jsnow@redhat.com>,
	Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Subject: [PATCH for-7.2 2/5] block/mirror: Drop mirror_wait_for_any_operation()
Date: Wed,  9 Nov 2022 17:54:49 +0100	[thread overview]
Message-ID: <20221109165452.67927-3-hreitz@redhat.com> (raw)
In-Reply-To: <20221109165452.67927-1-hreitz@redhat.com>

mirror_wait_for_free_in_flight_slot() is the only remaining user of
mirror_wait_for_any_operation(), so inline the latter into the former.

Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 block/mirror.c | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/block/mirror.c b/block/mirror.c
index e5467b0053..5b6f42392c 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -305,19 +305,21 @@ static int mirror_cow_align(MirrorBlockJob *s, int64_t *offset,
 }
 
 static inline void coroutine_fn
-mirror_wait_for_any_operation(MirrorBlockJob *s, bool active)
+mirror_wait_for_free_in_flight_slot(MirrorBlockJob *s)
 {
     MirrorOp *op;
 
     QTAILQ_FOREACH(op, &s->ops_in_flight, next) {
-        /* Do not wait on pseudo ops, because it may in turn wait on
+        /*
+         * Do not wait on pseudo ops, because it may in turn wait on
          * some other operation to start, which may in fact be the
          * caller of this function.  Since there is only one pseudo op
          * at any given time, we will always find some real operation
-         * to wait on. */
-        if (!op->is_pseudo_op && op->is_in_flight &&
-            op->is_active_write == active)
-        {
+         * to wait on.
+         * Also, do not wait on active operations, because they do not
+         * use up in-flight slots.
+         */
+        if (!op->is_pseudo_op && op->is_in_flight && !op->is_active_write) {
             qemu_co_queue_wait(&op->waiting_requests, NULL);
             return;
         }
@@ -325,13 +327,6 @@ mirror_wait_for_any_operation(MirrorBlockJob *s, bool active)
     abort();
 }
 
-static inline void coroutine_fn
-mirror_wait_for_free_in_flight_slot(MirrorBlockJob *s)
-{
-    /* Only non-active operations use up in-flight slots */
-    mirror_wait_for_any_operation(s, false);
-}
-
 /* Perform a mirror copy operation.
  *
  * *op->bytes_handled is set to the number of bytes copied after and
-- 
2.36.1



  parent reply	other threads:[~2022-11-09 16:55 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-09 16:54 [PATCH for-7.2 0/5] block/mirror: Do not wait for active writes Hanna Reitz
2022-11-09 16:54 ` [PATCH for-7.2 1/5] " Hanna Reitz
2022-11-10 12:04   ` Kevin Wolf
2022-11-09 16:54 ` Hanna Reitz [this message]
2022-11-10 12:05   ` [PATCH for-7.2 2/5] block/mirror: Drop mirror_wait_for_any_operation() Kevin Wolf
2022-11-09 16:54 ` [PATCH for-7.2 3/5] block/mirror: Fix NULL s->job in active writes Hanna Reitz
2022-11-10 12:10   ` Kevin Wolf
2022-11-10 12:40     ` Hanna Reitz
2022-11-09 16:54 ` [PATCH for-7.2 4/5] iotests/151: Test that active mirror progresses Hanna Reitz
2022-11-10 12:33   ` Kevin Wolf
2022-11-09 16:54 ` [PATCH for-7.2 5/5] iotests/151: Test active requests on mirror start Hanna Reitz
2022-11-10 12:33   ` Kevin Wolf

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