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Zhang Haoyu b57b7ec340 snapshot: add bdrv_drain_all() to bdrv_snapshot_delete() to avoid concurrency problem
If there are still pending i/o while deleting snapshot,
because deleting snapshot is done in non-coroutine context, and
the pending i/o read/write (bdrv_co_do_rw) is done in coroutine context,
so it's possible to cause concurrency problem between above two operations.
Add bdrv_drain_all() to bdrv_snapshot_delete() to avoid this problem.

Signed-off-by: Zhang Haoyu <zhanghy@sangfor.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 201410211637596311287@sangfor.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 3432a1929e)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2015-01-06 18:40:28 -06:00
audio audio: Drop superfluous conditionals around g_free() 2014-06-13 12:34:54 +02:00
backends Revert "rng-egd: remove redundant free" 2014-09-23 10:48:06 -05:00
block snapshot: add bdrv_drain_all() to bdrv_snapshot_delete() to avoid concurrency problem 2015-01-06 18:40:28 -06:00
bsd-user bsd-user: Fix syscall format, add strace support for more syscalls 2014-06-11 00:25:06 +01:00
default-configs pc: implement pc-dimm device abstraction 2014-06-19 16:41:47 +03:00
disas disas/libvixl: prepend the include path of libvixl header files 2014-07-08 12:45:57 +01:00
docs docs: document missing VSERPORT_CHANGE event 2014-07-24 10:00:33 -04:00
dtc@bc895d6d09 dtc: add submodule 2013-04-18 13:50:53 +02:00
fpu fpu: softfloat: drop INLINE macro 2014-06-23 11:00:12 -04:00
fsdev virtfs-proxy-helper: fix call to accept 2014-04-28 08:55:32 +04:00
gdb-xml target-arm: Support fp registers in gdb stub 2013-12-17 19:42:32 +00:00
hw hw/xtensa/xtfpga: treat uImage load address as virtual 2015-01-06 18:39:24 -06:00
include hw/core/loader: implement address translation in uimage loader 2015-01-06 18:39:10 -06:00
libcacard libcacard: don't free sign buffer while sign op is pending 2015-01-06 18:13:49 -06:00
libdecnumber libdecnumber: Fix decNumberSetBCD 2014-06-16 13:24:29 +02:00
linux-headers linux-headers: update linux headers to kvm/next 2014-06-16 13:24:41 +02:00
linux-user linux-user: use TARGET_SA_ONSTACK in get_sigframe 2014-07-15 17:08:41 +03:00
net net: complete all queued packets on VM stop 2014-09-10 09:30:58 -05:00
pc-bios pc-bios/s390-ccw: update binary 2014-07-08 15:08:03 +02:00
pixman@97336fad32 qapi: move include files to include/qobject/ 2012-12-19 08:31:31 +01:00
po po: update Italian translation 2014-07-29 13:23:33 +01:00
qapi qapi: dealloc visitor, implement visit_start_union 2015-01-04 13:44:04 -06:00
qga qga: Add missing 'static' attribute 2014-07-18 17:45:37 +04:00
qobject json-lexer: fix escaped backslash in single-quoted string 2014-06-23 11:01:24 -04:00
qom qom: object: Ignore refs/unrefs of NULL 2014-07-01 10:20:41 +02:00
roms pseries: Update SLOF firmware image to qemu-slof-20140630 2014-07-08 12:10:36 +02:00
scripts qapi: add visit_start_union and visit_end_union 2015-01-04 13:43:48 -06:00
slirp slirp: udp: fix NULL pointer dereference because of uninitialized socket 2014-09-24 11:11:52 -05:00
stubs Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into staging 2014-06-24 13:06:13 +01:00
sysconfigs/target Eliminate cpus-x86_64.conf file 2012-09-21 15:12:58 +02:00
target-alpha softmmu: introduce cpu_ldst.h 2014-06-05 16:10:33 +02:00
target-arm target-arm: Correct Cortex-A57 ISAR5 and AA64ISAR0 ID register values 2014-09-10 09:30:57 -05:00
target-cris target-cris/translate.c: Remove _t_gen_mov_TN_env and _t_gen_mov_env_TN 2014-06-09 01:04:44 +02:00
target-i386 target-i386: Support migratable=no properly 2014-09-10 09:30:58 -05:00
target-lm32 vl: allow other threads to do qemu_system_vmstop_request 2014-06-23 16:36:13 +08:00
target-m68k softmmu: introduce cpu_ldst.h 2014-06-05 16:10:33 +02:00
target-microblaze target-microblaze: Delete unused sign_extend() function 2014-06-10 19:39:34 +04:00
target-mips target-mips/translate.c: Free TCG in OPC_DINSV 2014-07-28 23:37:15 +02:00
target-moxie softmmu: introduce cpu_ldst.h 2014-06-05 16:10:33 +02:00
target-openrisc openrisc: fix comment 2014-06-29 18:59:06 +03:00
target-ppc spapr: Move RMA memory region registration code 2014-07-15 16:11:59 +02:00
target-s390x s390x/kvm: synchronize guest floating point registers 2014-07-14 09:15:38 +02:00
target-sh4 softmmu: introduce cpu_ldst.h 2014-06-05 16:10:33 +02:00
target-sparc softmmu: introduce cpu_ldst.h 2014-06-05 16:10:33 +02:00
target-unicore32 target-unicore: Remove unused functions 2014-06-24 20:01:24 +04:00
target-xtensa softmmu: introduce cpu_ldst.h 2014-06-05 16:10:33 +02:00
tcg tcg/mips: fix store softmmu slow path 2015-01-06 18:36:20 -06:00
tests tests: avoid running duplicate qom-tests 2015-01-06 15:52:23 -06:00
trace glib-compat.h: add new thread API emulation on top of pre-2.31 API 2014-06-10 07:44:01 +02:00
ui vnc: sanitize bits_per_pixel from the client 2015-01-06 18:26:44 -06:00
util module: Don't complain when a module is absent 2014-07-18 14:57:35 +02:00
.exrc
.gitignore qapi: ignore generated event files 2014-06-27 09:27:55 -04:00
.gitmodules PPC: Add u-boot firmware for e500 2014-06-16 13:24:35 +02:00
.mailmap Update mailmap 2013-09-05 09:40:31 -05:00
.travis.yml trace: Multi-backend tracing 2014-06-09 15:43:40 +02:00
aio-posix.c AioContext: speed up aio_notify 2014-07-09 15:50:11 +02:00
aio-win32.c block: drop aio functions that operate on the main AioContext 2014-07-09 15:50:11 +02:00
arch_init.c migration: catch unknown flags in ram_load 2014-06-16 04:55:27 +02:00
async.c AioContext: speed up aio_notify 2014-07-09 15:50:11 +02:00
balloon.c qapi event: convert BALLOON_CHANGE 2014-06-23 11:12:28 -04:00
block-migration.c migration: Add missing 'static' attribute 2014-07-18 17:45:37 +04:00
block.c block: Add Error argument to bdrv_refresh_limits() 2014-07-18 13:18:43 +01:00
blockdev-nbd.c nbd: Shutdown socket before closing. 2014-06-30 12:50:12 +02:00
blockdev.c block: add backing-file option to block-stream 2014-07-01 10:47:01 +02:00
blockjob.c block: prefer aio_poll to qemu_aio_wait 2014-07-09 15:50:11 +02:00
bt-host.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
bt-vhci.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
Changelog Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
CODING_STYLE CODING_STYLE: Section about mixed declarations 2014-03-27 19:22:49 +04:00
configure l2tpv3 (configure): it is linux-specific 2014-08-26 16:57:28 -05:00
COPYING
COPYING.LIB
coroutine-gthread.c glib-compat.h: add new thread API emulation on top of pre-2.31 API 2014-06-10 07:44:01 +02:00
coroutine-sigaltstack.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-ucontext.c Fix warnings suppressors to honor --disable-werror 2013-04-17 10:28:04 -05:00
coroutine-win32.c coroutine-win32.c: Add noinline attribute to work around gcc bug 2014-06-26 14:08:14 +01:00
cpu-exec.c cpu: make CPU_INTERRUPT_RESET available on all targets 2014-05-13 13:21:51 +02:00
cpus.c Introduce cpu_clean_all_dirty 2014-12-24 15:56:18 -06:00
cputlb.c softmmu: introduce cpu_ldst.h 2014-06-05 16:10:33 +02:00
device-hotplug.c blockdev: Remove unused DriveInfo reference count 2014-06-16 17:23:19 +08:00
device_tree.c device_tree: qemu_fdt_setprop: Rename val_array arg 2013-12-20 01:58:12 +01:00
disas.c monitor: QEMU Monitor Instruction Disassembly Incorrect for PowerPC LE Mode 2014-06-16 13:24:26 +02:00
dma-helpers.c dma-helpers: Fix too long qiov 2014-07-14 12:03:21 +02:00
dump.c dump: Make DumpState and endian conversion routines available for arch-specific dump code 2014-06-16 13:24:36 +02:00
exec.c exec: file_ram_alloc(): print error when prealloc fails 2014-12-24 15:43:39 -06:00
gdbstub.c gdbstub: init mon_chr through qemu_chr_alloc 2015-01-04 13:41:55 -06:00
HACKING HACKING: Document vaddr type usage 2013-07-23 02:41:31 +02:00
hmp-commands.hx Add the vhost-user netdev backend to the command line 2014-06-19 18:44:18 +03:00
hmp.c block: add backing-file option to block-stream 2014-07-01 10:47:01 +02:00
hmp.h hmp: add info memdev 2014-06-19 18:44:21 +03:00
iohandler.c iohandler.c: Properly initialize sigaction struct 2014-05-24 00:07:29 +04:00
ioport.c portio: Allow to mark portio lists as coalesced MMIO flushing 2013-10-17 17:24:15 +02:00
iothread.c AioContext: do not rely on aio_poll(ctx, true) result to end a loop 2014-07-14 12:03:20 +02:00
kvm-all.c Introduce cpu_clean_all_dirty 2014-12-24 15:56:18 -06:00
kvm-stub.c Add kvm_eventfds_enabled function 2014-06-19 16:41:54 +03:00
LICENSE LICENSE: clarify 2013-08-12 09:15:12 -05:00
main-loop.c block: drop aio functions that operate on the main AioContext 2014-07-09 15:50:11 +02:00
MAINTAINERS MAINTAINERS: add Stefan Hajnoczi to IDE maintainers 2014-07-07 09:15:29 +02:00
Makefile PPC: e500: Actually install u-boot.e500 2014-07-08 12:10:37 +02:00
Makefile.objs qapi script: add event support 2014-06-23 11:01:25 -04:00
Makefile.target configure: Fix -lm test, so that tools can be compiled on hosts that require -lm 2014-07-01 10:36:28 +02:00
memory.c memory: MemoryRegion: Add size property 2014-07-01 10:20:41 +02:00
memory_mapping.c cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
migration-exec.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-fd.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-rdma.c rdma: bug fixes 2014-06-23 19:09:50 +02:00
migration-tcp.c Coverity: Fix failure path for qemu_accept in migration 2014-05-05 22:15:03 +02:00
migration-unix.c Coverity: Fix failure path for qemu_accept in migration 2014-05-05 22:15:03 +02:00
migration.c migration: catch unknown flags in ram_load 2014-06-16 04:55:27 +02:00
module-common.c module: implement module loading 2014-02-20 13:14:18 +01:00
monitor.c monitor: Reset HMP mon->rs in CHR_EVENT_OPEN 2015-01-05 09:46:07 -06:00
nbd.c nbd: Handle NBD_OPT_LIST option. 2014-06-30 12:50:17 +02:00
numa.c numa: show hex number in error message for consistency and prefix them with 0x 2014-09-08 11:23:04 -05:00
os-posix.c oslib-posix: Fix build on FreeBSD 2014-03-13 14:34:16 +00:00
os-win32.c util: Split out exec_dir from os_find_datadir 2014-02-20 13:12:54 +01:00
page_cache.c migration: Plug memory leak in migrate-set-cache-size command 2014-06-10 19:54:43 +04:00
qapi-schema.json mc146818rtc: add rtc-reset-reinjection QMP command 2014-06-29 18:59:35 +03:00
qdev-monitor.c qdev-monitor: include QOM properties in -device FOO, help output 2014-08-26 16:46:19 -05:00
qdict-test-data.txt
qemu-bridge-helper.c qemu-bridge-helper: Fix fd leak in main() 2014-06-27 10:39:10 +02:00
qemu-char.c pty: Fix byte loss bug when connecting to pty 2014-09-10 09:30:58 -05:00
qemu-coroutine-io.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
qemu-coroutine-lock.c coroutine: remove qemu_co_queue_wait_insert_head 2013-12-02 17:11:49 +01:00
qemu-coroutine-sleep.c coroutine: add co_aio_sleep_ns() to allow sleep in block drivers 2013-10-30 12:22:09 +01:00
qemu-coroutine.c coroutine: add ./configure --disable-coroutine-pool 2013-09-12 10:12:48 +02:00
qemu-doc.texi doc: slirp supports ICMP echo if enabled in Linux 2014-07-18 17:45:37 +04:00
qemu-file.c Make qemu_peek_buffer loop until it gets it's data 2014-05-05 22:15:03 +02:00
qemu-img-cmds.hx qemu-img: add -l for snapshot in convert 2013-12-04 15:19:00 +01:00
qemu-img.c qemu-img: Remove redundancy "ret = -1" 2014-07-18 17:45:37 +04:00
qemu-img.texi Fix nocow typos in manpage 2014-07-07 09:15:29 +02:00
qemu-io-cmds.c block: prefer aio_poll to qemu_aio_wait 2014-07-09 15:50:11 +02:00
qemu-io.c trace: Multi-backend tracing 2014-06-09 15:43:40 +02:00
qemu-log.c qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
qemu-nbd.c nbd: Shutdown socket before closing. 2014-06-30 12:50:12 +02:00
qemu-nbd.texi nbd: Miscellaneous typo fixes. 2014-05-24 00:07:29 +04:00
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx qemu-options: fix another allows-to for -net l2tpv3 2014-07-26 11:16:44 +04:00
qemu-seccomp.c seccomp: add shmctl(), mlock(), and munlock() to the syscall whitelist 2014-04-25 14:52:03 -03:00
qemu-tech.texi qemu-tech.texi: update implemented xtensa features list 2012-11-29 13:00:52 -06:00
qemu-timer.c vl.c: remove init_clocks call from main 2014-05-09 20:57:32 +02:00
qemu.nsi nsis: Improved support for parallel installation of 32 and 64 bit code 2013-11-07 07:02:44 +01:00
qemu.sasl sasl: Avoid 'Could not find keytab file' in syslog 2014-03-15 13:54:18 +04:00
qmp-commands.hx block: add backing-file option to block-stream 2014-07-01 10:47:01 +02:00
qmp.c qmp: hide "hotplugged" device property from device-list-properties 2014-08-26 16:46:01 -05:00
qtest.c qtest: fix hex2nib for capital characters 2014-06-10 19:39:34 +04:00
README Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
rules.mak build-sys: introduce install-prog macro to install&strip binaries and use it 2014-06-24 20:01:24 +04:00
savevm.c snapshot: fix referencing wrong variable in while loop in do_delvm 2015-01-06 15:55:00 -06:00
softmmu_template.h softmmu: move softmmu_template.h out of include/ 2014-06-05 16:10:33 +02:00
spice-qemu-char.c qemu-char: introduce qemu_chr_alloc 2014-06-23 11:12:28 -04:00
tcg-runtime.c tcg: Push tcg-runtime routines into exec/helper-* 2014-05-28 09:33:54 -07:00
tci.c Merge remote-tracking branch 'remotes/bonzini/softmmu-smap' into staging 2014-06-05 21:06:14 +01:00
thread-pool.c thread-pool: avoid deadlock in nested aio_poll() calls 2014-09-08 11:23:06 -05:00
thunk.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
tpm.c Use error_is_set() only when necessary 2014-02-17 11:57:23 -05:00
trace-events trace: add qemu_system_powerdown_request and qemu_system_shutdown_request trace events 2014-07-01 10:56:13 +02:00
translate-all.c Fix new typos (found by codespell) 2014-06-24 20:01:24 +04:00
translate-all.h translate-all: Change tb_check_watchpoint() argument to CPUState 2014-03-13 19:20:48 +01:00
user-exec.c softmmu: introduce cpu_ldst.h 2014-06-05 16:10:33 +02:00
VERSION Update version for v2.1.2 release 2014-09-25 14:52:04 -05:00
version.rc Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
vl.c Make qemu_shutdown_requested signal-safe 2015-01-06 18:25:45 -06:00
vmstate.c vmstate: Add preallocation for migrating arrays (VMS_ALLOC flag) 2014-06-27 13:48:27 +02:00
xbzrle.c xbzrle.c: Avoid undefined behaviour with signed arithmetic 2014-04-18 10:33:36 +04:00
xen-common-stub.c xen: factor out common functions 2014-05-07 16:16:43 +00:00
xen-common.c xen: factor out common functions 2014-05-07 16:16:43 +00:00
xen-hvm-stub.c xen-hvm: Fix xen_hvm_init() to adjust pc memory layout 2014-06-23 17:50:04 +03:00
xen-hvm.c Fix new typos in comments (found by codespell) 2014-07-18 17:45:36 +04:00
xen-mapcache.c xen: build on ARM 2014-07-07 10:37:40 +00:00

Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

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