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[Qemu-devel] [PATCH v2 5/5] block: use QSLIST for the AIO free list
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH v2 5/5] block: use QSLIST for the AIO free list |
Date: |
Fri, 13 Jan 2012 17:34:05 +0100 |
QSLIST is equivalent to an open-coded free list, use it.
Signed-off-by: Paolo Bonzini <address@hidden>
---
block.c | 9 ++++-----
block_int.h | 4 ++--
2 files changed, 6 insertions(+), 7 deletions(-)
diff --git a/block.c b/block.c
index 3f072f6..acb54b1 100644
--- a/block.c
+++ b/block.c
@@ -3242,9 +3242,9 @@ void *qemu_aio_get(AIOPool *pool, BlockDriverState *bs,
{
BlockDriverAIOCB *acb;
- if (pool->free_aiocb) {
- acb = pool->free_aiocb;
- pool->free_aiocb = acb->next;
+ if (!QSLIST_EMPTY(pool->free_aiocb)) {
+ acb = QSLIST_FIRST(pool->free_aiocb);
+ QSLIST_REMOVE_HEAD(pool->free_aiocb, next);
} else {
acb = g_malloc0(pool->aiocb_size);
acb->pool = pool;
@@ -3259,8 +3259,7 @@ void qemu_aio_release(void *p)
{
BlockDriverAIOCB *acb = (BlockDriverAIOCB *)p;
AIOPool *pool = acb->pool;
- acb->next = pool->free_aiocb;
- pool->free_aiocb = acb;
+ QSLIST_INSERT_HEAD(pool->free_aiocb, acb, next);
}
/**************************************************************/
diff --git a/block_int.h b/block_int.h
index 311bd2a..c592e54 100644
--- a/block_int.h
+++ b/block_int.h
@@ -56,7 +56,7 @@ typedef struct BdrvTrackedRequest BdrvTrackedRequest;
typedef struct AIOPool {
void (*cancel)(BlockDriverAIOCB *acb);
int aiocb_size;
- BlockDriverAIOCB *free_aiocb;
+ QSLIST_HEAD(, BlockDriverAIOCB) *free_aiocb;
} AIOPool;
typedef struct BlockIOLimit {
@@ -268,7 +268,7 @@ struct BlockDriverAIOCB {
BlockDriverState *bs;
BlockDriverCompletionFunc *cb;
void *opaque;
- BlockDriverAIOCB *next;
+ QSLIST_ENTRY(BlockDriverAIOCB) next;
};
void get_tmp_filename(char *filename, int size);
--
1.7.7.1