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Eric Blake 51b0a48888 block: Make bdrv_is_allocated_above() byte-based 
We are gradually moving away from sector-based interfaces, towards
byte-based.  In the common case, allocation is unlikely to ever use
values that are not naturally sector-aligned, but it is possible
that byte-based values will let us be more precise about allocation
at the end of an unaligned file that can do byte-based access.

Changing the signature of the function to use int64_t *pnum ensures
that the compiler enforces that all callers are updated.  For now,
the io.c layer still assert()s that all callers are sector-aligned,
but that can be relaxed when a later patch implements byte-based
block status.  Therefore, for the most part this patch is just the
addition of scaling at the callers followed by inverse scaling at
bdrv_is_allocated().  But some code, particularly stream_run(),
gets a lot simpler because it no longer has to mess with sectors.
Leave comments where we can further simplify by switching to
byte-based iterations, once later patches eliminate the need for
sector-aligned operations.

For ease of review, bdrv_is_allocated() was tackled separately.

Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
 		2017-07-10 13:18:07 +02:00
..
Makefile.objs qed: Remove GenericCB 2017-06-26 14:51:14 +02:00
accounting.c block: make accounting thread-safe 2017-06-16 07:55:00 +08:00
backup.c block: Make bdrv_is_allocated() byte-based 2017-07-10 13:18:07 +02:00
blkdebug.c blkdebug: Support .bdrv_co_get_block_status 2017-07-10 13:18:05 +02:00
blkreplay.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
blkverify.c blkverify: Catch bs->exact_filename overflow 2017-06-26 14:54:46 +02:00
block-backend.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
bochs.c block: do not set BDS read_only if copy_on_read enabled 2017-04-24 15:09:33 -04:00
cloop.c block: do not set BDS read_only if copy_on_read enabled 2017-04-24 15:09:33 -04:00
commit.c block: Make bdrv_is_allocated_above() byte-based 2017-07-10 13:18:07 +02:00
crypto.c crypto: move 'opaque' parameter to (nearly) the end of parameter list 2017-05-09 14:41:47 +01:00
curl.c curl: do not do aio_poll when waiting for a free CURLState 2017-05-16 10:34:50 -04:00
dirty-bitmap.c block: protect modification of dirty bitmaps with a mutex 2017-06-16 07:55:00 +08:00
dmg-bz2.c dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
dmg.c block: do not set BDS read_only if copy_on_read enabled 2017-04-24 15:09:33 -04:00
dmg.h dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
file-posix.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
file-win32.c block/file-*: *_parse_filename() and colons 2017-05-29 15:39:54 +02:00
gluster.c block/gluster.c: Handle qdict_array_entries() failure 2017-06-09 08:41:29 -04:00
io.c block: Make bdrv_is_allocated_above() byte-based 2017-07-10 13:18:07 +02:00
iscsi-opts.c block/iscsi: statically link qemu_iscsi_opts 2017-01-27 18:07:58 +01:00
iscsi.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
linux-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
mirror.c block: Make bdrv_is_allocated_above() byte-based 2017-07-10 13:18:07 +02:00
nbd-client.c nbd: fix NBD over TLS 2017-07-04 14:30:03 +02:00
nbd-client.h block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
nbd.c block: Do not strcmp() with NULL uri->scheme 2017-06-26 14:54:46 +02:00
nfs.c block: Do not strcmp() with NULL uri->scheme 2017-06-26 14:54:46 +02:00
null.c qobject: Use simpler QDict/QList scalar insertion macros 2017-05-09 09:13:51 +02:00
parallels.c block: Add errp to b{lk,drv}_truncate() 2017-04-28 16:02:02 +02:00
qapi.c QAPI patches for 2017-06-09 2017-06-22 11:34:39 +01:00
qcow.c block/qcow.c: Fix memory leak in qcow_create() 2017-06-09 13:46:20 +02:00
qcow2-cache.c qcow2: Remove stale comment 2016-11-25 13:51:30 +01:00
qcow2-cluster.c qcow2: Use offset_into_cluster() and offset_to_l2_index() 2017-06-26 14:51:13 +02:00
qcow2-refcount.c qcow2: Make distinction between zero cluster types obvious 2017-05-11 14:28:07 +02:00
qcow2-snapshot.c qcow2: Discard/zero clusters by byte count 2017-05-11 14:28:07 +02:00
qcow2.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
qcow2.h qcow2: Merge the writing of the COW regions with the guest data 2017-06-26 14:51:13 +02:00
qed-check.c qed: Use DIV_ROUND_UP 2016-06-07 18:19:24 +03:00
qed-cluster.c qed: Add coroutine_fn to I/O path functions 2017-06-26 14:51:15 +02:00
qed-l2-cache.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-table.c qed: Remove callback from qed_write_table() 2017-06-26 14:51:14 +02:00
qed.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
qed.h qed: Add coroutine_fn to I/O path functions 2017-06-26 14:51:15 +02:00
quorum.c qapi: merge QInt and QFloat in QNum 2017-06-20 14:31:31 +02:00
raw-format.c block: Simplify use of BDRV_BLOCK_RAW 2017-07-10 13:18:05 +02:00
rbd.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
replication.c block: Make bdrv_is_allocated_above() byte-based 2017-07-10 13:18:07 +02:00
sheepdog.c block: Do not strcmp() with NULL uri->scheme 2017-06-26 14:54:46 +02:00
snapshot.c qobject: Use simpler QDict/QList scalar insertion macros 2017-05-09 09:13:51 +02:00
ssh.c block: Do not strcmp() with NULL uri->scheme 2017-06-26 14:54:46 +02:00
stream.c block: Make bdrv_is_allocated_above() byte-based 2017-07-10 13:18:07 +02:00
throttle-groups.c throttle: Update throttle-groups.c documentation 2017-06-26 14:51:13 +02:00
trace-events trace: Show blockjob actions via bytes, not sectors 2017-07-10 13:18:06 +02:00
vdi.c migration: Create migration/blocker.h 2017-05-17 12:04:59 +02:00
vhdx-endian.c vhdx: Use QEMU UUID API 2016-09-23 11:42:52 +08:00
vhdx-log.c block: Add errp to b{lk,drv}_truncate() 2017-04-28 16:02:02 +02:00
vhdx.c migration: Create migration/blocker.h 2017-05-17 12:04:59 +02:00
vhdx.h block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec 2014-12-12 15:42:22 +00:00
vmdk.c migration: Create migration/blocker.h 2017-05-17 12:04:59 +02:00
vpc.c block: Simplify use of BDRV_BLOCK_RAW 2017-07-10 13:18:05 +02:00
vvfat.c block: Make bdrv_is_allocated() byte-based 2017-07-10 13:18:07 +02:00
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 block: use bdrv_add_before_write_notifier 2016-10-07 13:34:07 +02:00