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From: Markus Armbruster <armbru@redhat.com>
To: qemu-devel@nongnu.org
Cc: kwolf@redhat.com, famz@redhat.com.com, stefanha@redhat.com
Subject: [Qemu-devel] [PATCH v2] vmdk: Use bdrv_nb_sectors() where sectors, not bytes are wanted
Date: Thu, 21 Aug 2014 14:36:19 +0200	[thread overview]
Message-ID: <1408624579-22382-1-git-send-email-armbru@redhat.com> (raw)

Instead of bdrv_getlength().

Commit 57322b7 did this all over block, but one more bdrv_getlength()
has crept in since.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
v2: Actually use bdrv_nb_sectors() as advertized [Fam]
Passes ./check -T -vmdk -g quick

 block/vmdk.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/block/vmdk.c b/block/vmdk.c
index 01412a8..6ca8684 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -397,7 +397,7 @@ static int vmdk_add_extent(BlockDriverState *bs,
 {
     VmdkExtent *extent;
     BDRVVmdkState *s = bs->opaque;
-    int64_t length;
+    int64_t nb_sectors;
 
     if (cluster_sectors > 0x200000) {
         /* 0x200000 * 512Bytes = 1GB for one cluster is unrealistic */
@@ -413,9 +413,9 @@ static int vmdk_add_extent(BlockDriverState *bs,
         return -EFBIG;
     }
 
-    length = bdrv_getlength(file);
-    if (length < 0) {
-        return length;
+    nb_sectors = bdrv_nb_sectors(file);
+    if (nb_sectors < 0) {
+        return nb_sectors;
     }
 
     s->extents = g_realloc(s->extents,
@@ -433,8 +433,7 @@ static int vmdk_add_extent(BlockDriverState *bs,
     extent->l1_entry_sectors = l2_size * cluster_sectors;
     extent->l2_size = l2_size;
     extent->cluster_sectors = flat ? sectors : cluster_sectors;
-    extent->next_cluster_sector =
-        ROUND_UP(DIV_ROUND_UP(length, BDRV_SECTOR_SIZE), cluster_sectors);
+    extent->next_cluster_sector = ROUND_UP(nb_sectors, cluster_sectors);
 
     if (s->num_extents > 1) {
         extent->end_sector = (*(extent - 1)).end_sector + extent->sectors;
-- 
1.9.3

             reply	other threads:[~2014-08-21 12:36 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-21 12:36 Markus Armbruster [this message]
2014-08-21 17:38 ` [Qemu-devel] [PATCH v2] vmdk: Use bdrv_nb_sectors() where sectors, not bytes are wanted Benoît Canet
2014-08-22  0:43 ` Fam Zheng
2014-08-22  9:10 ` Kevin Wolf

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