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Kevin Wolf 89b259eeaa file-posix: Fix no-op bdrv_truncate() with falloc preallocation 
If bdrv_truncate() is called, but the requested size is the same as
before, don't call posix_fallocate(), which returns -EINVAL for length
zero and would therefore make bdrv_truncate() fail.

The problem can be triggered by creating a zero-sized raw image with
'falloc' preallocation mode.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2018-03-09 15:17:48 +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
Block layer patches
2018-03-06 11:20:44 +00:00
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
create.c
block: x-blockdev-create QMP command
2018-03-09 15:17:47 +01:00
crypto.c
block: implement the bdrv_reopen_prepare helper for LUKS driver
2018-03-09 15:17:47 +01:00
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.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: Fix no-op bdrv_truncate() with falloc preallocation
2018-03-09 15:17:48 +01:00
file-win32.c
file-win32: Support .bdrv_co_create
2018-03-09 15:17:47 +01:00
gluster.c
gluster: Support .bdrv_co_create
2018-03-09 15:17:47 +01:00
io.c
block: extract AIO_WAIT_WHILE() from BlockDriverState
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: convert bdrv_invalidate_cache callback to coroutine_fn
2018-03-09 15:17:47 +01:00
linux-aio.c
…
Makefile.objs
block: x-blockdev-create QMP command
2018-03-09 15:17:47 +01:00
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
Include less of the generated modular QAPI headers
2018-03-02 13:45:50 -06:00
nfs.c
nfs: Support .bdrv_co_create
2018-03-09 15:17:47 +01:00
null.c
null: Switch to .bdrv_co_block_status()
2018-03-02 18:39:07 +01:00
nvme.c
nvme: Drop pointless .bdrv_co_get_block_status()
2018-03-02 18:39:07 +01:00
parallels.c
block: convert bdrv_check callback to coroutine_fn
2018-03-09 15:17:47 +01:00
parallels.h
Clean up includes
2018-02-09 05:05:11 +01:00
qapi.c
Include less of the generated modular QAPI headers
2018-03-02 13:45:50 -06:00
qcow2-bitmap.c
qcow2: fix flushing after dirty bitmap metadata writes
2018-03-09 15:17:47 +01:00
qcow2-cache.c
qcow2: Allow configuring the L2 slice size
2018-02-13 17:00:00 +01:00
qcow2-cluster.c
qcow2: Check L1 table parameters in qcow2_expand_zero_clusters()
2018-03-09 15:17:47 +01:00
qcow2-refcount.c
qcow2: Make qemu-img check detect corrupted L1 tables in snapshots
2018-03-09 15:17:47 +01:00
qcow2-snapshot.c
qcow2: Check snapshot L1 table in qcow2_snapshot_delete()
2018-03-09 15:17:47 +01:00
qcow2.c
block: x-blockdev-create QMP command
2018-03-09 15:17:47 +01:00
qcow2.h
qcow2: Generalize validate_table_offset() into qcow2_validate_table()
2018-03-09 15:17:47 +01:00
qcow.c
block: rename .bdrv_create() to .bdrv_co_create_opts()
2018-03-02 18:39:07 +01:00
qed-check.c
block: convert bdrv_check callback to coroutine_fn
2018-03-09 15:17:47 +01:00
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
block: convert bdrv_check callback to coroutine_fn
2018-03-09 15:17:47 +01:00
qed.c
block: convert bdrv_check callback to coroutine_fn
2018-03-09 15:17:47 +01:00
qed.h
qed: protect table cache with CoMutex
2017-07-17 11:34:11 +08:00
quorum.c
Include less of the generated modular QAPI headers
2018-03-02 13:45:50 -06:00
raw-format.c
block: rename .bdrv_create() to .bdrv_co_create_opts()
2018-03-02 18:39:07 +01:00
rbd.c
rbd: Use qemu_rbd_connect() in qemu_rbd_do_create()
2018-03-09 15:17:47 +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: Support .bdrv_co_create
2018-03-09 15:17:47 +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
ssh: Support .bdrv_co_create
2018-03-09 15:17:48 +01:00
stream.c
blockjob: remove clock argument from block_job_sleep_ns
2017-11-29 15:11:02 +01:00
throttle-groups.c
Include less of the generated modular QAPI headers
2018-03-02 13:45:50 -06:00
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
block: convert bdrv_check callback to coroutine_fn
2018-03-09 15:17:47 +01:00
vhdx-endian.c
…
vhdx-log.c
vhdx: use QEMU_ALIGN_DOWN
2017-08-31 12:29:07 +02:00
vhdx.c
block: convert bdrv_check callback to coroutine_fn
2018-03-09 15:17:47 +01:00
vhdx.h
…
vmdk.c
block: convert bdrv_check callback to coroutine_fn
2018-03-09 15:17:47 +01:00
vpc.c
block: rename .bdrv_create() to .bdrv_co_create_opts()
2018-03-02 18:39:07 +01:00
vvfat.c
vvfat: Switch to .bdrv_co_block_status()
2018-03-02 18:39:07 +01:00
vxhs.c
qobject: Use simpler QDict/QList scalar insertion macros
2017-05-09 09:13:51 +02:00
win32-aio.c
…
write-threshold.c
Include less of the generated modular QAPI headers
2018-03-02 13:45:50 -06:00