diff options
author | Christophe Vu-Brugier <cvubrugier@fastmail.fm> | 2015-03-19 14:30:13 +0100 |
---|---|---|
committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2015-03-19 23:26:46 -0700 |
commit | 9bc6548f372d8c829235095d91de99d8df79db6e (patch) | |
tree | 012b832b58932d5966c17ca9b8998f1550152c8d /drivers/xen/xen-scsiback.c | |
parent | 5f7da044f8bc1cfb21c962edf34bd5699a76e7ae (diff) | |
download | linux-9bc6548f372d8c829235095d91de99d8df79db6e.tar.bz2 |
target: do not reject FUA CDBs when write cache is enabled but emulate_write_cache is 0
A check that rejects a CDB with FUA bit set if no write cache is
emulated was added by the following commit:
fde9f50 target: Add sanity checks for DPO/FUA bit usage
The condition is as follows:
if (!dev->dev_attrib.emulate_fua_write ||
!dev->dev_attrib.emulate_write_cache)
However, this check is wrong if the backend device supports WCE but
"emulate_write_cache" is disabled.
This patch uses se_dev_check_wce() (previously named
spc_check_dev_wce) to invoke transport->get_write_cache() if the
device has a write cache or check the "emulate_write_cache" attribute
otherwise.
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christophe Vu-Brugier <cvubrugier@fastmail.fm>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/xen/xen-scsiback.c')
0 files changed, 0 insertions, 0 deletions