[Qemu-block] [PATCH v5 1/5] block: Use bdrv_is_sg() everywhere

[Dimitris Aragiorgis]

Instead of checking bs->sg use bdrv_is_sg() consistently throughout
the code.

Signed-off-by: Dimitris Aragiorgis <address@hidden>
Reviewed-by: Paolo Bonzini <address@hidden>
Reviewed-by: Stefan Hajnoczi <address@hidden>
---
 block.c           |    6 +++---
 block/iscsi.c     |    2 +-
 block/raw-posix.c |    4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/block.c b/block.c
index dd4f58d..f04b2a1 100644
--- a/block.c
+++ b/block.c
@@ -583,7 +583,7 @@ static int find_image_format(BlockDriverState *bs, const 
char *filename,
     int ret = 0;
 
     /* Return the raw BlockDriver * to scsi-generic devices or empty drives */
-    if (bs->sg || !bdrv_is_inserted(bs) || bdrv_getlength(bs) == 0) {
+    if (bdrv_is_sg(bs) || !bdrv_is_inserted(bs) || bdrv_getlength(bs) == 0) {
         *pdrv = &bdrv_raw;
         return ret;
     }
@@ -615,7 +615,7 @@ static int refresh_total_sectors(BlockDriverState *bs, 
int64_t hint)
     BlockDriver *drv = bs->drv;
 
     /* Do not attempt drv->bdrv_getlength() on scsi-generic devices */
-    if (bs->sg)
+    if (bdrv_is_sg(bs))
         return 0;
 
     /* query actual device if possible, otherwise just trust the hint */
@@ -946,7 +946,7 @@ static int bdrv_open_common(BlockDriverState *bs, 
BlockDriverState *file,
 
     assert(bdrv_opt_mem_align(bs) != 0);
     assert(bdrv_min_mem_align(bs) != 0);
-    assert((bs->request_alignment != 0) || bs->sg);
+    assert((bs->request_alignment != 0) || bdrv_is_sg(bs));
 
     qemu_opts_del(opts);
     return 0;
diff --git a/block/iscsi.c b/block/iscsi.c
index 14e97a6..000528c 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -627,7 +627,7 @@ static int coroutine_fn iscsi_co_flush(BlockDriverState *bs)
     IscsiLun *iscsilun = bs->opaque;
     struct IscsiTask iTask;
 
-    if (bs->sg) {
+    if (bdrv_is_sg(bs)) {
         return 0;
     }
 
diff --git a/block/raw-posix.c b/block/raw-posix.c
index 44ade8c..3ee3bd6 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -303,9 +303,9 @@ static void raw_probe_alignment(BlockDriverState *bs, int 
fd, Error **errp)
     char *buf;
     size_t max_align = MAX(MAX_BLOCKSIZE, getpagesize());
 
-    /* For /dev/sg devices the alignment is not really used.
+    /* For SCSI generic devices the alignment is not really used.
        With buffered I/O, we don't have any restrictions. */
-    if (bs->sg || !s->needs_alignment) {
+    if (bdrv_is_sg(bs) || !s->needs_alignment) {
         bs->request_alignment = 1;
         s->buf_align = 1;
         return;
-- 
1.7.10.4