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block: fix bogus gcc warning for uninitialized var usage

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Newer gcc throw this warning:

        fs/bio.c: In function ?bio_alloc_bioset?:
        fs/bio.c:305: warning: ?p? may be used uninitialized in this function

since it cannot figure out that 'p' is only ever used if 'bs' is non-NULL.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2009-02-19 08:50:26 +01:00
parent 169d418b12
commit b2bf96833c
1 changed files with 1 additions and 1 deletions
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2
fs/bio.c
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@ -302,7 +302,7 @@ void bio_init(struct bio *bio)
struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs) struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
{ {
struct bio *bio = NULL; struct bio *bio = NULL;
void *p; void *uninitialized_var(p);
if (bs) { if (bs) {
p = mempool_alloc(bs->bio_pool, gfp_mask); p = mempool_alloc(bs->bio_pool, gfp_mask);