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Kevin Wolf b1a86eb532 block: Use BDRV_O_NO_BACKING where appropriate 
If you open an image temporarily just because you want to check its size
or get it flushed, there's no real reason to open the whole backing file
chain.

This is a backport of c9fbb99d41 to
qemu 1.7.1.

The backport was done to fix a bug where QEMU 1.7.1 would crash or freeze
when the user take around 80 consecutives snapshots in a row.

git bisect would lead to commit: ba2ab2f2ca
and it was clear that BDRV_NO_BACKING was missing.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
 		2014-06-25 16:33:46 -05:00
..
Makefile.objs block: vhdx - log parsing, replay, and flush support 2013-11-07 13:58:58 +01:00
backup.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
blkdebug.c blkdebug: Employ error parameter 2013-10-11 16:50:00 +02:00
blkverify.c blkverify: Employ error parameter 2013-10-11 16:50:00 +02:00
bochs.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
cloop.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
commit.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
cow.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
curl.c block/curl: Implement the libcurl timer callback interface 2014-02-21 00:34:40 -06:00
dmg.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
gluster.c block: introduce BlockDriver.bdrv_needs_filename to enable some drivers. 2013-09-25 16:21:28 +02:00
iscsi.c block/iscsi: fix deadlock on scsi check condition 2014-06-25 11:08:29 -05:00
linux-aio.c aio: drop io_flush argument 2013-08-19 15:52:19 +02:00
mirror.c mirror: fix early wake from sleep due to aio 2014-06-25 15:26:29 -05:00
nbd.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
parallels.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
qapi.c block/qapi: Human-readable ImageInfoSpecific dump 2013-10-11 10:52:54 +02:00
qcow.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
qcow2-cache.c qcow2: Use negated overflow check mask 2013-10-11 16:50:00 +02:00
qcow2-cluster.c qcow2: fix possible corruption when reading multiple clusters 2013-11-14 13:09:07 +01:00
qcow2-refcount.c qcow2: Make overlap check mask variable 2013-10-11 16:50:00 +02:00
qcow2-snapshot.c qcow2: Use negated overflow check mask 2013-10-11 16:50:00 +02:00
qcow2.c block: Use BDRV_O_NO_BACKING where appropriate 2014-06-25 16:33:46 -05:00
qcow2.h qcow2: Add more overlap check bitmask macros 2013-10-11 16:50:00 +02:00
qed-check.c qed: mark image clean after repair succeeds 2012-08-10 10:25:12 +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 misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qed.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
qed.h block: qed - use QEMU_PACKED for on-disk structures 2013-09-25 20:51:15 +02:00
raw-aio.h block: make discard asynchronous 2013-01-15 10:03:47 +01:00
raw-posix.c block: Print its file name if backing file opening failed 2013-11-14 13:09:06 +01:00
raw-win32.c block: Print its file name if backing file opening failed 2013-11-14 13:09:06 +01:00
raw_bsd.c block: Avoid unecessary drv->bdrv_getlength() calls 2013-10-29 13:10:26 +01:00
rbd.c rbd: avoid qemu_rbd_snap_list() memory leaks 2013-09-25 16:22:00 +02:00
sheepdog.c sheepdog: check simultaneous create in resend_aioreq 2013-10-30 12:22:24 +01:00
snapshot.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
ssh.c bdrv: Use "Error" for creating images 2013-09-12 10:12:48 +02:00
stream.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
vdi.c block: vdi - use QEMU_PACKED for on-disk structures 2013-09-25 20:51:05 +02:00
vhdx-endian.c block: vhdx - move more endian translations to vhdx-endian.c 2013-11-07 13:58:59 +01:00
vhdx-log.c block: vhdx - add log write support 2013-11-07 13:58:59 +01:00
vhdx.c block: vhdx - add .bdrv_create() support 2013-11-07 13:58:59 +01:00
vhdx.h block: vhdx - add .bdrv_create() support 2013-11-07 13:58:59 +01:00
vmdk.c block: Use BDRV_O_NO_BACKING where appropriate 2014-06-25 16:33:46 -05:00
vpc.c block/vpc: fix virtual size for images created with disk2vhd 2013-11-07 13:58:58 +01:00
vvfat.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
win32-aio.c win32-aio: drop win32_aio_flush_cb() 2013-08-22 22:05:04 +02:00