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| author | Kevin Wolf <kwolf@redhat.com> | 2010-06-18 16:19:11 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2010-06-22 14:38:02 +0200 |
| commit | 078a458e077d6b0db262c4b05fee51d01de2d1d2 (patch) | |
| tree | 167b1ac78915e7dc8726e5d5205d41d44a0a9a88 /block/vpc.c | |
| parent | b8852e87d9d113096342c3e0977266cda0fe9ee5 (diff) | |
| download | qemu-078a458e077d6b0db262c4b05fee51d01de2d1d2.tar.gz | |
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.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/block/vpc.c b/block/vpc.c index f1f73e2a88..e50509eeaa 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; |