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authorKevin Wolf <kwolf@redhat.com>2010-06-18 16:19:11 +0200
committerKevin Wolf <kwolf@redhat.com>2010-06-22 14:38:02 +0200
commit078a458e077d6b0db262c4b05fee51d01de2d1d2 (patch)
tree167b1ac78915e7dc8726e5d5205d41d44a0a9a88 /block/vpc.c
parentb8852e87d9d113096342c3e0977266cda0fe9ee5 (diff)
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vpc: Use bdrv_(p)write_sync for metadata writes
Use bdrv_(p)write_sync to ensure metadata integrity in case of a crash. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/vpc.c')
-rw-r--r--block/vpc.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/block/vpc.c b/block/vpc.c
index f1f73e2..e50509e 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -261,7 +261,7 @@ static inline int64_t get_sector_offset(BlockDriverState *bs,
s->last_bitmap_offset = bitmap_offset;
memset(bitmap, 0xff, s->bitmap_size);
- bdrv_pwrite(bs->file, bitmap_offset, bitmap, s->bitmap_size);
+ bdrv_pwrite_sync(bs->file, bitmap_offset, bitmap, s->bitmap_size);
}
// printf("sector: %" PRIx64 ", index: %x, offset: %x, bioff: %" PRIx64 ", bloff: %" PRIx64 "\n",
@@ -311,7 +311,7 @@ static int rewrite_footer(BlockDriverState* bs)
BDRVVPCState *s = bs->opaque;
int64_t offset = s->free_data_block_offset;
- ret = bdrv_pwrite(bs->file, offset, s->footer_buf, HEADER_SIZE);
+ ret = bdrv_pwrite_sync(bs->file, offset, s->footer_buf, HEADER_SIZE);
if (ret < 0)
return ret;
@@ -346,7 +346,8 @@ static int64_t alloc_block(BlockDriverState* bs, int64_t sector_num)
// Initialize the block's bitmap
memset(bitmap, 0xff, s->bitmap_size);
- bdrv_pwrite(bs->file, s->free_data_block_offset, bitmap, s->bitmap_size);
+ bdrv_pwrite_sync(bs->file, s->free_data_block_offset, bitmap,
+ s->bitmap_size);
// Write new footer (the old one will be overwritten)
s->free_data_block_offset += s->block_size + s->bitmap_size;
@@ -357,7 +358,7 @@ static int64_t alloc_block(BlockDriverState* bs, int64_t sector_num)
// Write BAT entry to disk
bat_offset = s->bat_offset + (4 * index);
bat_value = be32_to_cpu(s->pagetable[index]);
- ret = bdrv_pwrite(bs->file, bat_offset, &bat_value, 4);
+ ret = bdrv_pwrite_sync(bs->file, bat_offset, &bat_value, 4);
if (ret < 0)
goto fail;