diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-04-05 15:29:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-04-05 15:29:01 -0700 |
| commit | 44148a667d3715f3a1c37eeff7e954c946cc1efe (patch) | |
| tree | fd8685dd17dcef45993b733f4ec4df97e6808304 /block/blk-integrity.c | |
| parent | d0de4dc584ec6aa3b26fffea320a8457827768fc (diff) | |
| parent | 782b86e2656762382ae1c2686d8d5c91f7d5eacf (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-2.6-block
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-2.6-block:
ide: always ensure that blk_delay_queue() is called if we have pending IO
block: fix request sorting at unplug
dm: improve block integrity support
fs: export empty_aops
ide: ide_requeue_and_plug() reinstate "always plug" behaviour
blk-throttle: don't call xchg on bool
ufs: remove unessecary blk_flush_plug
block: make the flush insertion use the tail of the dispatch list
block: get rid of elv_insert() interface
block: dump request state on seeing a corrupted request completion
Diffstat (limited to 'block/blk-integrity.c')
| -rw-r--r-- | block/blk-integrity.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/block/blk-integrity.c b/block/blk-integrity.c index 54bcba6c02a7..129b9e209a3b 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -30,6 +30,8 @@ static struct kmem_cache *integrity_cachep; +static const char *bi_unsupported_name = "unsupported"; + /** * blk_rq_count_integrity_sg - Count number of integrity scatterlist elements * @q: request queue @@ -358,6 +360,14 @@ static struct kobj_type integrity_ktype = { .release = blk_integrity_release, }; +bool blk_integrity_is_initialized(struct gendisk *disk) +{ + struct blk_integrity *bi = blk_get_integrity(disk); + + return (bi && bi->name && strcmp(bi->name, bi_unsupported_name) != 0); +} +EXPORT_SYMBOL(blk_integrity_is_initialized); + /** * blk_integrity_register - Register a gendisk as being integrity-capable * @disk: struct gendisk pointer to make integrity-aware @@ -407,7 +417,7 @@ int blk_integrity_register(struct gendisk *disk, struct blk_integrity *template) bi->get_tag_fn = template->get_tag_fn; bi->tag_size = template->tag_size; } else - bi->name = "unsupported"; + bi->name = bi_unsupported_name; return 0; } |