| commit | caf785bc19966cedc0ba3ee43526e0af43bd001a | |
| author | Tao Ma <tao.ma@oracle.com> | |
| Wed, 23 Jun 2010 23:43:57 +0000 (24 07:43 +0800) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 2 Aug 2010 17:30:18 +0000 (2 10:30 -0700) | ||
| tree | b1d0ad385fb75ad267016e9ae6636a96129029f8 | treesnapshot (tar.gz zip) |
| parent | 89dd01dc14e0c7d069f96c78c0929823c8734c0b | commitdiff |
block: Don't count_vm_events for discard bio in submit_bio.
commit 1b99973f1c82707e46e8cb9416865a1e955e8f8c upstream.
In submit_bio, we count vm events by check READ/WRITE.
But actually DISCARD_NOBARRIER also has the WRITE flag set.
It looks as if in blkdev_issue_discard, we also add a
page as the payload and the bio_has_data check isn't enough.
So add another check for discard bio.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 1b99973f1c82707e46e8cb9416865a1e955e8f8c upstream.
In submit_bio, we count vm events by check READ/WRITE.
But actually DISCARD_NOBARRIER also has the WRITE flag set.
It looks as if in blkdev_issue_discard, we also add a
page as the payload and the bio_has_data check isn't enough.
So add another check for discard bio.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| block/blk-core.c | diffblobblamehistory |