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| author | Eric Blake <eblake@redhat.com> | 2016-06-23 16:37:17 -0600 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-07-05 16:46:25 +0200 |
| commit | a65064816d64db463f4c24bd81dcaad62fee89eb (patch) | |
| tree | 4cd8ced0f63203a99b49bca6eaf8145f864660cf /block/dmg.c | |
| parent | 2914a1de992118286f5280eddf4f4e6060a8e00b (diff) | |
| download | qemu-a65064816d64db463f4c24bd81dcaad62fee89eb.zip qemu-a65064816d64db463f4c24bd81dcaad62fee89eb.tar.gz qemu-a65064816d64db463f4c24bd81dcaad62fee89eb.tar.bz2 | |
block: Set request_alignment during .bdrv_refresh_limits()
We want to eventually stick request_alignment alongside other
BlockLimits, but first, we must ensure it is populated at the
same time as all other limits, rather than being a special case
that is set only when a block is first opened.
Add a .bdrv_refresh_limits() to all four of our legacy devices
that will always be sector-only (bochs, cloop, dmg, vvfat), in
spite of their recent conversion to expose a byte interface.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/dmg.c')
| -rw-r--r-- | block/dmg.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/block/dmg.c b/block/dmg.c index 06eb513..1e53cd8 100644 --- a/block/dmg.c +++ b/block/dmg.c @@ -439,7 +439,6 @@ static int dmg_open(BlockDriverState *bs, QDict *options, int flags, int ret; bs->read_only = 1; - bs->request_alignment = BDRV_SECTOR_SIZE; /* No sub-sector I/O supported */ s->n_chunks = 0; s->offsets = s->lengths = s->sectors = s->sectorcounts = NULL; @@ -547,6 +546,11 @@ fail: return ret; } +static void dmg_refresh_limits(BlockDriverState *bs, Error **errp) +{ + bs->request_alignment = BDRV_SECTOR_SIZE; /* No sub-sector I/O supported */ +} + static inline int is_sector_in_chunk(BDRVDMGState* s, uint32_t chunk_num, uint64_t sector_num) { @@ -720,6 +724,7 @@ static BlockDriver bdrv_dmg = { .instance_size = sizeof(BDRVDMGState), .bdrv_probe = dmg_probe, .bdrv_open = dmg_open, + .bdrv_refresh_limits = dmg_refresh_limits, .bdrv_co_preadv = dmg_co_preadv, .bdrv_close = dmg_close, }; |