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From: Eric Blake <eblake@redhat.com>
To: qemu-devel@nongnu.org
Cc: kwolf@redhat.com, pkrempa@redhat.com, qemu-block@nongnu.org,
	armbru@redhat.com, rjones@redhat.com, vsementsov@virtuozzo.com,
	stefanha@redhat.com, Max Reitz <mreitz@redhat.com>
Subject: [PATCH v6 01/11] block: Simplify QAPI_LIST_ADD
Date: Tue, 27 Oct 2020 00:05:46 -0500	[thread overview]
Message-ID: <20201027050556.269064-2-eblake@redhat.com> (raw)
In-Reply-To: <20201027050556.269064-1-eblake@redhat.com>

There is no need to rely on the verbosity of the gcc/clang compiler
extension of g_new(typeof(X), 1) when we can instead use the standard
g_malloc(sizeof(X)).  In general, we like g_new over g_malloc for
returning type X rather than void* to let the compiler catch more
potential typing mistakes, but in this particular macro, our other use
of typeof on the same line already ensures we are getting correct
results.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
---
 block.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block.c b/block.c
index 430edf79bb10..857387f3912f 100644
--- a/block.c
+++ b/block.c
@@ -5231,7 +5231,7 @@ BlockDeviceInfoList *bdrv_named_nodes_list(bool flat,
 }

 #define QAPI_LIST_ADD(list, element) do { \
-    typeof(list) _tmp = g_new(typeof(*(list)), 1); \
+    typeof(list) _tmp = g_malloc(sizeof(*(list))); \
     _tmp->value = (element); \
     _tmp->next = (list); \
     (list) = _tmp; \
-- 
2.29.0



  reply	other threads:[~2020-10-27  5:08 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-27  5:05 [PATCH v6 00/11] Exposing backing-chain allocation over NBD Eric Blake
2020-10-27  5:05 ` Eric Blake [this message]
2020-10-27 10:06   ` [PATCH v6 01/11] block: Simplify QAPI_LIST_ADD Vladimir Sementsov-Ogievskiy
2020-10-27 12:58   ` Markus Armbruster
2020-10-27  5:05 ` [PATCH v6 02/11] qapi: Make QAPI_LIST_ADD() public Eric Blake
2020-10-27  5:05 ` [PATCH v6 03/11] nbd: Utilize QAPI_CLONE for type conversion Eric Blake
2020-10-27  5:05 ` [PATCH v6 04/11] nbd: Update qapi to support exporting multiple bitmaps Eric Blake
2020-10-27 10:29   ` Vladimir Sementsov-Ogievskiy
2020-10-27 12:37   ` Peter Krempa
2020-10-27  5:05 ` [PATCH v6 05/11] nbd: Simplify qemu bitmap context name Eric Blake
2020-10-27  5:05 ` [PATCH v6 06/11] nbd: Refactor counting of metadata contexts Eric Blake
2020-10-27 10:33   ` Vladimir Sementsov-Ogievskiy
2020-10-27  5:05 ` [PATCH v6 07/11] nbd: Allow export of multiple bitmaps for one device Eric Blake
2020-10-27  5:05 ` [PATCH v6 08/11] block: Return depth level during bdrv_is_allocated_above Eric Blake
2020-10-27 12:05   ` Vladimir Sementsov-Ogievskiy
2020-10-27  5:05 ` [PATCH v6 09/11] nbd: Add new qemu:allocation-depth metadata context Eric Blake
2020-10-27 10:53   ` Vladimir Sementsov-Ogievskiy
2020-10-27  5:05 ` [PATCH v6 10/11] nbd: Add 'qemu-nbd -A' to expose allocation depth Eric Blake
2020-10-27 11:03   ` Vladimir Sementsov-Ogievskiy
2020-10-27  5:05 ` [PATCH v6 11/11] qapi: Use QAPI_LIST_ADD() where possible Eric Blake
2020-10-27  5:53   ` Thomas Huth
2020-10-27  6:39   ` David Gibson
2020-10-27 10:09   ` Markus Armbruster
2020-10-27 12:28     ` Eric Blake
2020-10-27 15:36       ` Markus Armbruster
2020-10-27 18:44         ` Eric Blake
2020-10-27 11:26   ` Dr. David Alan Gilbert
2020-10-27 13:42   ` Vladimir Sementsov-Ogievskiy

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