diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-24 07:48:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-24 07:48:24 -0700 |
| commit | 97c68d00dbb2decda4b3dce79ce55df04246a834 (patch) | |
| tree | f7c2f3185e4dfb073f6d268b4aa0a4d9a0015ece /lib/scatterlist.c | |
| parent | 596a5c4e43b08e90c0cd788861f859bf7ed6eddc (diff) | |
| parent | f2d1f0ae7851be5ebd9613a80dac139270938809 (diff) | |
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
cfq-iosched: cache prio_tree root in cfqq->p_root
cfq-iosched: fix bug with aliased request and cooperation detection
cfq-iosched: clear ->prio_trees[] on cfqd alloc
block: fix intermittent dm timeout based oops
umem: fix request_queue lock warning
block: simplify I/O stat accounting
pktcdvd.h should include mempool.h
cfq-iosched: use the default seek distance when there aren't enough seek samples
cfq-iosched: make seek_mean converge more quickly
block: make blk_abort_queue() ignore non-request based devices
block: include empty disks in /proc/diskstats
bio: use bio_kmalloc() in copy/map functions
bio: fix bio_kmalloc()
block: fix queue bounce limit setting
block: fix SG_IO vector request data length handling
scatterlist: make sure sg_miter_next() doesn't return 0 sized mappings
Diffstat (limited to 'lib/scatterlist.c')
| -rw-r--r-- | lib/scatterlist.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/scatterlist.c b/lib/scatterlist.c index b7b449dafbe..a295e404e90 100644 --- a/lib/scatterlist.c +++ b/lib/scatterlist.c @@ -347,9 +347,12 @@ bool sg_miter_next(struct sg_mapping_iter *miter) sg_miter_stop(miter); /* get to the next sg if necessary. __offset is adjusted by stop */ - if (miter->__offset == miter->__sg->length && --miter->__nents) { - miter->__sg = sg_next(miter->__sg); - miter->__offset = 0; + while (miter->__offset == miter->__sg->length) { + if (--miter->__nents) { + miter->__sg = sg_next(miter->__sg); + miter->__offset = 0; + } else + return false; } /* map the next page */ |