diff options
| author | Hannes Reinecke <hare@suse.de> | 2017-04-07 09:34:14 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-02 07:06:53 +0200 |
| commit | a4075bbb67b9562b9599affc6fb38f04bd7073ff (patch) | |
| tree | 8b43383999534235b45781fa77459d9ecd0a0896 /scripts/unifdef.c | |
| parent | 823086b057aabde5659c5f8638051613cba86247 (diff) | |
scsi: sg: protect accesses to 'reserved' page array
commit 1bc0eb0446158cc76562176b80623aa119afee5b upstream.
The 'reserved' page array is used as a short-cut for mapping data,
saving us to allocate pages per request. However, the 'reserved' array
is only capable of holding one request, so this patch introduces a mutex
for protect 'sg_fd' against concurrent accesses.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Tested-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[toddpoynor@google.com: backport to 3.18-4.9, fixup for bad ioctl
SG_SET_FORCE_LOW_DMA code removed in later versions and not modified by
the original patch.]
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Tested-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/unifdef.c')
0 files changed, 0 insertions, 0 deletions