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From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
To: qemu-block@nongnu.org
Cc: "Fam Zheng" <fam@euphon.net>,
	qemu-devel@nongnu.org, "Denis V. Lunev" <den@openvz.org>,
	"Eric Blake" <eblake@redhat.com>,
	"Emanuele Giuseppe Esposito" <eesposit@redhat.com>,
	"Juan Quintela" <quintela@redhat.com>,
	"Daniel Henrique Barboza" <danielhb413@gmail.com>,
	"Markus Armbruster" <armbru@redhat.com>,
	"Eduardo Habkost" <eduardo@habkost.net>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Greg Kurz" <groug@kaod.org>,
	"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
	"Cédric Le Goater" <clg@kaod.org>,
	"Stefan Hajnoczi" <stefanha@redhat.com>,
	"John Snow" <jsnow@redhat.com>,
	"David Gibson" <david@gibson.dropbear.id.au>,
	"Kevin Wolf" <kwolf@redhat.com>,
	"Vladimir Sementsov-Ogievskiy" <vsementsov@virtuozzo.com>,
	"Daniel P. Berrangé" <berrange@redhat.com>,
	"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	"Hanna Reitz" <hreitz@redhat.com>,
	qemu-ppc@nongnu.org, "Paolo Bonzini" <pbonzini@redhat.com>
Subject: [PATCH v6 22/33] block/coroutines: I/O API
Date: Fri, 21 Jan 2022 12:05:33 -0500	[thread overview]
Message-ID: <20220121170544.2049944-23-eesposit@redhat.com> (raw)
In-Reply-To: <20220121170544.2049944-1-eesposit@redhat.com>

block coroutines functions run in different aiocontext, and are
not protected by the BQL. Therefore are I/O.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 block/coroutines.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/block/coroutines.h b/block/coroutines.h
index c8c14a29c8..c61abd271a 100644
--- a/block/coroutines.h
+++ b/block/coroutines.h
@@ -29,6 +29,12 @@
 
 /* For blk_bs() in generated block/block-gen.c */
 #include "sysemu/block-backend.h"
+/*
+ * I/O API functions. These functions are thread-safe.
+ *
+ * See include/block/block-io.h for more information about
+ * the I/O API.
+ */
 
 int coroutine_fn bdrv_co_check(BlockDriverState *bs,
                                BdrvCheckResult *res, BdrvCheckMode fix);
-- 
2.31.1



  parent reply	other threads:[~2022-01-21 17:48 UTC|newest]

Thread overview: 85+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-21 17:05 [PATCH v6 00/33] block layer: split block APIs in global state and I/O Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 01/33] main-loop.h: introduce qemu_in_main_thread() Emanuele Giuseppe Esposito
2022-01-27 10:56   ` Kevin Wolf
2022-01-31 11:25     ` Emanuele Giuseppe Esposito
2022-01-31 14:33       ` Kevin Wolf
2022-01-31 15:49         ` Paolo Bonzini
2022-02-01  9:08           ` Emanuele Giuseppe Esposito
2022-02-01 10:41             ` Paolo Bonzini
2022-02-01 11:55           ` Kevin Wolf
2022-02-01 12:10             ` Kevin Wolf
2022-01-21 17:05 ` [PATCH v6 02/33] include/block/block: split header into I/O and global state API Emanuele Giuseppe Esposito
2022-01-27 11:01   ` Kevin Wolf
2022-01-31 13:40     ` Emanuele Giuseppe Esposito
2022-01-31 14:54       ` Kevin Wolf
2022-01-31 15:58         ` Paolo Bonzini
2022-02-01  9:45           ` Emanuele Giuseppe Esposito
2022-02-01 10:30             ` Paolo Bonzini
2022-02-07 16:53               ` Kevin Wolf
2022-02-08 10:50                 ` Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 03/33] assertions for block " Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 04/33] block/export/fuse.c: allow writable exports to take RESIZE permission Emanuele Giuseppe Esposito
2022-01-25 16:51   ` Hanna Reitz
2022-01-28 14:44     ` Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 05/33] include/sysemu/block-backend: split header into I/O and global state (GS) API Emanuele Giuseppe Esposito
2022-02-07 17:04   ` Kevin Wolf
2022-01-21 17:05 ` [PATCH v6 06/33] block/block-backend.c: assertions for block-backend Emanuele Giuseppe Esposito
2022-01-26  9:02   ` Hanna Reitz
2022-01-21 17:05 ` [PATCH v6 07/33] include/block/block_int: split header into I/O and global state API Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 08/33] assertions for block_int " Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 09/33] block: introduce assert_bdrv_graph_writable Emanuele Giuseppe Esposito
2022-02-07 17:14   ` Kevin Wolf
2022-01-21 17:05 ` [PATCH v6 10/33] include/block/blockjob_int.h: split header into I/O and GS API Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 11/33] assertions for blockjob_int.h Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 12/33] block.c: add assertions to static functions Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 13/33] include/block/blockjob.h: global state API Emanuele Giuseppe Esposito
2022-02-07 17:26   ` Kevin Wolf
2022-02-08 10:50     ` Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 14/33] assertions for blockjob.h " Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 15/33] include/sysemu/blockdev.h: " Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 16/33] assertions for blockdev.h " Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 17/33] include/block/snapshot: global state API + assertions Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 18/33] block/copy-before-write.h: " Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 19/33] block: introduce bdrv_activate Emanuele Giuseppe Esposito
2022-01-26 11:49   ` Hanna Reitz
2022-01-21 17:05 ` [PATCH v6 20/33] block: rename bdrv_invalidate_cache_all, blk_invalidate_cache and test_sync_op_invalidate_cache Emanuele Giuseppe Esposito
2022-01-24 10:44   ` Juan Quintela
2022-01-27  9:18     ` Emanuele Giuseppe Esposito
2022-01-31 15:59       ` Paolo Bonzini
2022-01-26 11:57   ` Hanna Reitz
2022-01-21 17:05 ` [PATCH v6 21/33] block: move BQL logic of bdrv_co_invalidate_cache in bdrv_activate Emanuele Giuseppe Esposito
2022-01-26 12:20   ` Hanna Reitz
2022-01-27 11:03   ` Kevin Wolf
2022-02-02 17:27     ` Paolo Bonzini
2022-02-02 18:27       ` Kevin Wolf
2022-01-21 17:05 ` Emanuele Giuseppe Esposito [this message]
2022-02-07 17:36   ` [PATCH v6 22/33] block/coroutines: I/O API Kevin Wolf
2022-01-21 17:05 ` [PATCH v6 23/33] block_int-common.h: split function pointers in BlockDriver Emanuele Giuseppe Esposito
2022-01-26 12:29   ` Hanna Reitz
2022-01-21 17:05 ` [PATCH v6 24/33] block_int-common.h: assertions in the callers of BlockDriver function pointers Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 25/33] block_int-common.h: split function pointers in BdrvChildClass Emanuele Giuseppe Esposito
2022-01-26 12:42   ` Hanna Reitz
2022-01-28 15:08     ` Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 26/33] block_int-common.h: assertions in the callers of BdrvChildClass function pointers Emanuele Giuseppe Esposito
2022-01-26 12:46   ` Hanna Reitz
2022-01-21 17:05 ` [PATCH v6 27/33] block-backend-common.h: split function pointers in BlockDevOps Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 28/33] job.h: split function pointers in JobDriver Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 29/33] job.h: assertions in the callers of JobDriver funcion pointers Emanuele Giuseppe Esposito
2022-01-26 14:13   ` Hanna Reitz
2022-01-28 15:19     ` Emanuele Giuseppe Esposito
2022-01-31  8:49       ` Hanna Reitz
2022-01-21 17:05 ` [PATCH v6 30/33] include/block/block_int-common.h: introduce bdrv_amend_pre_run and bdrv_amend_clean Emanuele Giuseppe Esposito
2022-01-26 14:54   ` Hanna Reitz
2022-01-21 17:05 ` [PATCH v6 31/33] include/qemu/job.h: introduce job->pre_run() and use it in amend Emanuele Giuseppe Esposito
2022-01-26 15:57   ` Hanna Reitz
2022-02-07 18:14   ` Kevin Wolf
2022-02-08 11:05     ` Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 32/33] crypto: delegate permission functions to JobDriver .pre_run Emanuele Giuseppe Esposito
2022-01-24 14:41   ` Paolo Bonzini
2022-01-26 16:10   ` Hanna Reitz
2022-01-28 16:57     ` Emanuele Giuseppe Esposito
2022-01-21 17:05 ` [PATCH v6 33/33] block.c: assertions to the block layer permissions API Emanuele Giuseppe Esposito
2022-02-07 18:30 ` [PATCH v6 00/33] block layer: split block APIs in global state and I/O Kevin Wolf
2022-02-08 11:42   ` Emanuele Giuseppe Esposito
2022-02-08 13:08     ` Kevin Wolf
2022-02-10 16:19       ` Emanuele Giuseppe Esposito

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