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authorWangyong <wang.yongD@h3c.com>2020-01-07 06:01:01 +0000
committerStefan Hajnoczi <stefanha@redhat.com>2020-01-13 16:41:45 +0000
commit2558cb8dd4150512bc8ae6d505cdcd10d0cc46bb (patch)
tree2db7dcaae8de7d0f4c0631212ed3dd0e19d9007b
parentdc65a5bdc9fa543690a775b50d4ffbeb22c56d6d (diff)
downloadfocaccia-qemu-2558cb8dd4150512bc8ae6d505cdcd10d0cc46bb.tar.gz
focaccia-qemu-2558cb8dd4150512bc8ae6d505cdcd10d0cc46bb.zip
linux-aio: increasing MAX_EVENTS to a larger hardcoded value
Since commit 6040aedddb5f474a9c2304b6a432a652d82b3d3c "virtio-blk:
make queue size configurable",if the user set the queue size to
more than 128 ,it will not take effect. That's because linux aio's
maximum outstanding requests at a time is always less than or equal
to 128.

This patch simply increase MAX_EVENTS to a larger hardcoded value of
1024 as a shortterm fix.

Signed-off-by: wangyong <wang.yongD@h3c.com>
Message-id: faa5781afd354a96a0be152b288f636f@h3c.com
Message-Id: <faa5781afd354a96a0be152b288f636f@h3c.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
-rw-r--r--block/linux-aio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/linux-aio.c b/block/linux-aio.c
index c7eca9a256..91204a25a2 100644
--- a/block/linux-aio.c
+++ b/block/linux-aio.c
@@ -26,7 +26,7 @@
  *      than this we will get EAGAIN from io_submit which is communicated to
  *      the guest as an I/O error.
  */
-#define MAX_EVENTS 128
+#define MAX_EVENTS 1024
 
 struct qemu_laiocb {
     Coroutine *co;