qemu/util
Eric Blake d1dde7149e bitmap: Update count after a merge
We need an accurate count of the number of bits set in a bitmap
after a merge. In particular, since the merge operation short-circuits
a merge from an empty source, if you have bitmaps A, B, and C where
B started empty, then merge C into B, and B into A, an inaccurate
count meant that A did not get the contents of C.

In the worst case, we may falsely regard the bitmap as empty when
it has had new writes merged into it.

Fixes: be58721db
CC: qemu-stable@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20181002233314.30159-1-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2018-10-29 16:23:17 -04:00
..
acl.c
aio-posix.c util: aio-posix: fix a typo 2018-10-29 13:35:22 +00:00
aio-wait.c block: Use a single global AioWait 2018-09-25 15:50:15 +02:00
aio-win32.c aio: Do aio_notify_accept only during blocking aio_poll 2018-08-15 10:12:35 +08:00
aiocb.c
async.c util/async: use qemu_aio_coroutine_enter in co_schedule_bh_cb 2018-09-25 15:50:15 +02:00
atomic64.c util: add atomic64 2018-10-02 18:47:55 +02:00
base64.c
bitmap.c
bitops.c
buffer.c
bufferiszero.c
cacheinfo.c util: add atomic64 2018-10-02 18:47:55 +02:00
compatfd.c
coroutine-sigaltstack.c
coroutine-ucontext.c
coroutine-win32.c
crc32c.c
cutils.c cutils: add qemu_pstrcmp0() 2018-10-05 16:14:22 +04:00
drm.c util: promote qemu_egl_rendernode_open() to libqemuutil 2018-08-27 10:51:44 +02:00
envlist.c
error.c error: Fix use of error_prepend() with &error_fatal, &error_abort 2018-10-19 14:51:34 +02:00
event_notifier-posix.c
event_notifier-win32.c
fifo8.c
getauxval.c
hbitmap.c bitmap: Update count after a merge 2018-10-29 16:23:17 -04:00
hexdump.c
host-utils.c
id.c
iohandler.c
iov.c
iova-tree.c util: remove redundant include of glib.h and add osdep.h 2018-06-29 12:22:28 +01:00
keyval.c qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREF 2018-05-04 08:27:53 +02:00
lockcnt.c
log.c tcg: Optionally log FPU state in TCG -d cpu logging 2018-05-15 14:58:44 +01:00
main-loop.c main-loop: drop spin_counter 2018-06-01 16:01:29 +01:00
Makefile.objs util: add atomic64 2018-10-02 18:47:55 +02:00
memfd.c hostmem-memfd: add checks before adding hostmem-memfd & properties 2018-10-02 18:47:55 +02:00
mmap-alloc.c Make qemu_mempath_getpagesize() accept NULL 2018-04-27 18:05:22 +10:00
module.c module: Use QEMU_MODULE_DIR as a search path 2018-08-23 18:46:25 +02:00
notify.c
osdep.c glib: bump min required glib library version to 2.40 2018-06-29 12:22:28 +01:00
oslib-posix.c util: use fcntl() for qemu_write_pidfile() locking 2018-10-02 18:47:55 +02:00
oslib-win32.c util: add qemu_write_pidfile() 2018-10-02 18:47:55 +02:00
pagesize.c
path.c
qdist.c
qemu-config.c block: Add block-specific QDict header 2018-06-15 14:49:44 +02:00
qemu-coroutine-io.c
qemu-coroutine-lock.c coroutine: avoid co_queue_wakeup recursion 2018-03-27 13:05:28 +01:00
qemu-coroutine-sleep.c
qemu-coroutine.c block: Add missing locking in bdrv_co_drain_bh_cb() 2018-09-25 15:50:15 +02:00
qemu-error.c error: Drop bogus "use error_setg() instead" admonitions 2018-10-19 15:47:09 +02:00
qemu-openpty.c
qemu-option.c qemu-option: improve qemu_opts_print_help() output 2018-10-05 16:14:22 +04:00
qemu-progress.c
qemu-sockets.c
qemu-thread-common.h QemuMutex: support --enable-debug-mutex 2018-06-28 19:05:32 +02:00
qemu-thread-posix.c qemu-thread: introduce qemu-thread-common.h 2018-06-28 19:05:31 +02:00
qemu-thread-win32.c qsp: QEMU's Synchronization Profiler 2018-08-23 18:46:25 +02:00
qemu-timer-common.c
qemu-timer.c qemu-timer: avoid checkpoints for virtual clock timers in external subsystems 2018-10-19 13:44:03 +02:00
qht.c qht: constify arguments to some internal functions 2018-09-26 08:55:54 -07:00
qsp.c qsp: use atomic64 accessors 2018-10-02 18:47:55 +02:00
range.c
rcu.c
readline.c
stats64.c
sys_membarrier.c sys_membarrier: fix up include directives 2018-04-05 14:37:38 +02:00
systemd.c
thread-pool.c
throttle.c
timed-average.c
trace-events aio-posix: compute timeout before polling 2018-09-26 10:46:21 +08:00
unicode.c json: Reject invalid UTF-8 sequences 2018-08-24 20:26:37 +02:00
uri.c cutils: Provide strchrnul 2018-06-29 12:32:10 +02:00
uuid.c
vfio-helpers.c replace functions which are only available in glib-2.24 2018-05-20 08:55:01 +03:00