Vladimir Sementsov-Ogievskiy 48557b1383 util/hbitmap: strict hbitmap_reset ... hbitmap_reset has an unobvious property: it rounds requested region up. It may provoke bugs, like in recently fixed write-blocking mode of mirror: user calls reset on unaligned region, not keeping in mind that there are possible unrelated dirty bytes, covered by rounded-up region and information of this unrelated "dirtiness" will be lost. Make hbitmap_reset strict: assert that arguments are aligned, allowing only one exception when @start + @count == hb->orig_size. It's needed to comfort users of hbitmap_next_dirty_area, which cares about hb->orig_size. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-Id: <20190806152611.280389-1-vsementsov@virtuozzo.com> [Maintainer edit: Max's suggestions from on-list. --js] [Maintainer edit: Eric's suggestion for aligned macro. --js] Signed-off-by: John Snow <jsnow@redhat.com>		2019-10-17 17:02:32 -04:00
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aio-posix.c
aio-wait.c
aio-win32.c
aiocb.c
async.c
atomic64.c
base64.c
bitmap.c
bitops.c
buffer.c
bufferiszero.c
cacheinfo.c
compatfd.c
coroutine-sigaltstack.c
coroutine-ucontext.c
coroutine-win32.c
crc32c.c
cutils.c
drm.c
envlist.c
error.c
event_notifier-posix.c
event_notifier-win32.c
fifo8.c
filemonitor-inotify.c
filemonitor-stub.c
getauxval.c
guest-random.c
hbitmap.c
hexdump.c
host-utils.c
id.c
iov.c
iova-tree.c
keyval.c
lockcnt.c
log.c
main-loop.c
Makefile.objs
memfd.c
mmap-alloc.c
module.c
notify.c
osdep.c
oslib-posix.c
oslib-win32.c
pagesize.c
path.c
qdist.c
qemu-config.c
qemu-coroutine-io.c
qemu-coroutine-lock.c
qemu-coroutine-sleep.c
qemu-coroutine.c
qemu-error.c
qemu-openpty.c
qemu-option.c
qemu-print.c
qemu-progress.c
qemu-sockets.c
qemu-thread-common.h
qemu-thread-posix.c
qemu-thread-win32.c
qemu-timer-common.c
qemu-timer.c
qht.c
qsp.c
range.c
rcu.c
readline.c
stats64.c
sys_membarrier.c
systemd.c
thread-pool.c
throttle.c
timed-average.c
trace-events
unicode.c
uri.c
uuid.c
vfio-helpers.c