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>
This commit is contained in:
Max Reitz 2016-03-16 19:54:30 +01:00 committed by Kevin Wolf
parent da27a00e27
commit 74d1b8fc27

View file

@ -227,9 +227,9 @@ void blk_unref(BlockBackend *blk)
void blk_remove_all_bs(void) 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); AioContext *ctx = blk_get_aio_context(blk);
aio_context_acquire(ctx); aio_context_acquire(ctx);
@ -271,10 +271,10 @@ const char *blk_name(BlockBackend *blk)
*/ */
BlockBackend *blk_by_name(const char *name) BlockBackend *blk_by_name(const char *name)
{ {
BlockBackend *blk; BlockBackend *blk = NULL;
assert(name); assert(name);
QTAILQ_FOREACH(blk, &blk_backends, link) { while ((blk = blk_next(blk)) != NULL) {
if (!strcmp(name, blk->name)) { if (!strcmp(name, blk->name)) {
return blk; return blk;
} }
@ -332,9 +332,9 @@ DriveInfo *blk_set_legacy_dinfo(BlockBackend *blk, DriveInfo *dinfo)
*/ */
BlockBackend *blk_by_legacy_dinfo(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) { if (blk->legacy_dinfo == dinfo) {
return blk; return blk;
} }