haraldwolff/qemu-patch-raspberry4
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Paolo Bonzini 7fe7b68b32 nbd: do not block in nbd_wr_sync if no data at all is available 
Right now, nbd_wr_sync will hang if no data at all is available on the
socket and the other side is not going to provide any.  Relax this by
making it loop only for writes or partial reads.  This fixes a race
where one thread is executing qemu_aio_wait() and another is executing
main_loop_wait().  Then, the select() call in main_loop_wait() can return
stale data and call the "readable" callback with no data in the socket.

Reported-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-04-19 16:36:43 +02:00
..
blkdebug.c block: push recursive flushing up from drivers 2012-04-05 14:54:39 +02:00
blkverify.c block: replace unchecked strdup/malloc/calloc with glib 2012-01-26 11:39:03 +01:00
bochs.c block: take lock around bdrv_read implementations 2011-10-21 17:34:14 +02:00
cloop.c block/cloop: Use g_free instead of free 2011-11-04 14:24:12 +01:00
cow.c block: push recursive flushing up from drivers 2012-04-05 14:54:39 +02:00
curl.c block/curl: Replace usleep by g_usleep 2012-04-03 09:34:34 +01:00
dmg.c block: take lock around bdrv_read implementations 2011-10-21 17:34:14 +02:00
iscsi.c iSCSI: add configuration variables for iSCSI 2012-02-09 16:17:50 +01:00
nbd.c nbd: do not block in nbd_wr_sync if no data at all is available 2012-04-19 16:36:43 +02:00
parallels.c block: take lock around bdrv_read implementations 2011-10-21 17:34:14 +02:00
qcow.c block: push recursive flushing up from drivers 2012-04-05 14:54:39 +02:00
qcow2-cache.c qcow2: Add some tracing 2012-03-12 15:14:06 +01:00
qcow2-cluster.c qcow2: Remove unused parameter in get_cluster_table() 2012-04-05 14:54:39 +02:00
qcow2-refcount.c qcow2: Add qcow2_alloc_clusters_at() 2012-03-12 15:14:07 +01:00
qcow2-snapshot.c qcow2: Allow >4 GB VM state 2011-12-15 12:40:33 +01:00
qcow2.c block: push recursive flushing up from drivers 2012-04-05 14:54:39 +02:00
qcow2.h qcow2: Reduce number of I/O requests 2012-03-12 15:14:07 +01:00
qed-check.c qed: image fragmentation statistics 2012-04-05 14:54:40 +02:00
qed-cluster.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-gencb.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-l2-cache.c qed: do not evict in-use L2 table cache entries 2012-03-12 15:14:06 +01:00
qed-table.c block: bdrv_aio_* do not return NULL 2011-12-15 12:40:07 +01:00
qed.c qed: remove incoming live migration blocker 2012-04-05 16:29:12 +02:00
qed.h qed: remove incoming live migration blocker 2012-04-05 16:29:12 +02:00
raw-posix-aio.h prepare for future GPLv2+ relicensing 2012-01-13 10:55:56 -06:00
raw-posix.c block: bdrv_eject(): Make eject_flag a real bool 2012-02-22 17:23:05 -02:00
raw-win32.c block: Rename bdrv_co_flush to bdrv_co_flush_to_disk 2011-11-11 14:02:59 +01:00
raw.c block: push recursive flushing up from drivers 2012-04-05 14:54:39 +02:00
rbd.c rbd: wire up snapshot removal and rollback functionality 2012-01-26 11:39:03 +01:00
sheepdog.c sheepdog: fix send req helpers 2012-04-05 14:54:41 +02:00
stream.c block stream: close unused files and update ->backing_hd 2012-04-05 15:11:37 +02:00
vdi.c vdi: change goto to loop 2012-04-05 14:54:40 +02:00
vmdk.c block: push recursive flushing up from drivers 2012-04-05 14:54:39 +02:00
vpc.c block/vpc: write checksum back to footer after check 2012-04-05 14:54:40 +02:00
vvfat.c vvfat: avoid leaking file descriptor in commit_one_file() 2012-01-13 10:36:59 +00:00