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a290f08590
qemu/block
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Eric Blake a290f08590 file-posix: Switch to .bdrv_co_block_status() 
We are gradually moving away from sector-based interfaces, towards
byte-based.  Update the file protocol driver accordingly.

In want_zero mode, we continue to report fine-grained hole
information (the caller wants as much mapping detail as possible);
but when not in that mode, the caller prefers larger *pnum and
merely cares about what offsets are allocated at this layer, rather
than where the holes live.  Since holes still read as zeroes at
this layer (rather than deferring to a backing layer), we can take
the shortcut of skipping lseek(), and merely state that all bytes
are allocated.

We can also drop redundant bounds checks that are already
guaranteed by the block layer.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-02 18:39:07 +01:00
..
accounting.c block: make accounting thread-safe 2017-06-16 07:55:00 +08:00
backup.c backup: use copy_bitmap in incremental backup 2017-12-18 10:54:13 -05:00
blkdebug.c block: Switch passthrough drivers to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
blkreplay.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
blkverify.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
block-backend.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
bochs.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
cloop.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
commit.c block: Switch passthrough drivers to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
crypto.c block: Simplify bdrv_can_write_zeroes_with_unmap() 2018-02-09 12:32:44 -06:00
crypto.h qcow: convert QCow to use QCryptoBlock for encryption 2017-07-11 17:44:56 +02:00
curl.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
dirty-bitmap.c block: maintain persistent disabled bitmaps 2018-02-13 16:59:58 +01:00
dmg-bz2.c dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
dmg.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
dmg.h block: remove "qemu/osdep.h" from header file 2017-12-18 17:07:02 +03:00
file-posix.c file-posix: Switch to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
file-win32.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
gluster.c gluster: Add preallocated truncation 2018-02-13 16:18:35 +01:00
io.c block: Switch passthrough drivers to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
iscsi-opts.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
iscsi.c block: Simplify bdrv_can_write_zeroes_with_unmap() 2018-02-09 12:32:44 -06:00
linux-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
Makefile.objs block: Add VFIO based NVMe driver 2018-02-08 09:22:03 +08:00
mirror.c block: Switch passthrough drivers to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
nbd-client.c nbd: Honor server's advertised minimum block size 2018-03-01 14:02:32 -06:00
nbd-client.h nbd: Minimal structured read for client 2017-10-30 21:48:41 +01:00
nbd.c nbd: Honor server's advertised minimum block size 2018-03-01 14:02:32 -06:00
nfs.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
null.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
nvme.c nvme: Drop pointless .bdrv_co_get_block_status() 2018-03-02 18:39:07 +01:00
parallels.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
parallels.h Clean up includes 2018-02-09 05:05:11 +01:00
qapi.c Include qapi/qmp/qdict.h exactly where needed 2018-02-09 13:52:15 +01:00
qcow2-bitmap.c block: maintain persistent disabled bitmaps 2018-02-13 16:59:58 +01:00
qcow2-cache.c qcow2: Allow configuring the L2 slice size 2018-02-13 17:00:00 +01:00
qcow2-cluster.c qcow2: Rename l2_table in count_cow_clusters() 2018-02-13 17:00:00 +01:00
qcow2-refcount.c qcow2: Update qcow2_update_snapshot_refcount() to support L2 slices 2018-02-13 17:00:00 +01:00
qcow2-snapshot.c qcow2: Discard/zero clusters by byte count 2017-05-11 14:28:07 +02:00
qcow2.c qcow2: Allow configuring the L2 slice size 2018-02-13 17:00:00 +01:00
qcow2.h qcow2: Allow configuring the L2 slice size 2018-02-13 17:00:00 +01:00
qcow.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
qed-check.c qed: Use DIV_ROUND_UP 2016-06-07 18:19:24 +03:00
qed-cluster.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed-l2-cache.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed-table.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed.c block: Simplify bdrv_can_write_zeroes_with_unmap() 2018-02-09 12:32:44 -06:00
qed.h qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
quorum.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
raw-format.c block: remove unused bdrv_media_changed 2017-09-04 18:31:13 +02:00
rbd.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
replication.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
sheepdog.c sheepdog: Allow fully preallocated truncation 2018-02-13 16:18:41 +01:00
snapshot.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
ssh.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
stream.c blockjob: remove clock argument from block_job_sleep_ns 2017-11-29 15:11:02 +01:00
throttle-groups.c throttle-groups: forget timer and schedule next TGM on detach 2017-11-16 14:12:57 +00:00
throttle.c block: Switch passthrough drivers to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
trace-events block: Add VFIO based NVMe driver 2018-02-08 09:22:03 +08:00
vdi.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
vhdx-endian.c vhdx: Use QEMU UUID API 2016-09-23 11:42:52 +08:00
vhdx-log.c vhdx: use QEMU_ALIGN_DOWN 2017-08-31 12:29:07 +02:00
vhdx.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
vhdx.h block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec 2014-12-12 15:42:22 +00:00
vmdk.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
vpc.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
vvfat.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
vxhs.c qobject: Use simpler QDict/QList scalar insertion macros 2017-05-09 09:13:51 +02:00
win32-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
write-threshold.c Include qapi/error.h exactly where needed 2018-02-09 13:50:17 +01:00