From: Max Reitz <mreitz@redhat.com>
Date: Wed, 16 Mar 2016 18:54:30 +0000 (+0100)
Subject: block: Use blk_next() in block-backend.c
X-Git-Tag: TizenStudio_2.0_p2.4~27^2~6^2~8^2~103^2~24
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=74d1b8fc27a3dab5743b1fc5ea567640e2acf69b;p=sdk%2Femulator%2Fqemu.git

block: Use blk_next() in block-backend.c

Instead of iterating directly through blk_backends, we can use
blk_next() instead. This gives us some abstraction from the list itself
which we can use to rename it, for example.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---

diff --git a/block/block-backend.c b/block/block-backend.c
index 03e71b4..7a04e10 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -227,9 +227,9 @@ void blk_unref(BlockBackend *blk)
 
 void blk_remove_all_bs(void)
 {
-    BlockBackend *blk;
+    BlockBackend *blk = NULL;
 
-    QTAILQ_FOREACH(blk, &blk_backends, link) {
+    while ((blk = blk_next(blk)) != NULL) {
         AioContext *ctx = blk_get_aio_context(blk);
 
         aio_context_acquire(ctx);
@@ -271,10 +271,10 @@ const char *blk_name(BlockBackend *blk)
  */
 BlockBackend *blk_by_name(const char *name)
 {
-    BlockBackend *blk;
+    BlockBackend *blk = NULL;
 
     assert(name);
-    QTAILQ_FOREACH(blk, &blk_backends, link) {
+    while ((blk = blk_next(blk)) != NULL) {
         if (!strcmp(name, blk->name)) {
             return blk;
         }
@@ -332,9 +332,9 @@ DriveInfo *blk_set_legacy_dinfo(BlockBackend *blk, DriveInfo *dinfo)
  */
 BlockBackend *blk_by_legacy_dinfo(DriveInfo *dinfo)
 {
-    BlockBackend *blk;
+    BlockBackend *blk = NULL;
 
-    QTAILQ_FOREACH(blk, &blk_backends, link) {
+    while ((blk = blk_next(blk)) != NULL) {
         if (blk->legacy_dinfo == dinfo) {
             return blk;
         }