From: Christoph Hellwig Date: Tue, 2 Feb 2021 17:19:21 +0000 (+0100) Subject: block: factor out a bvec_alloc_gfp helper X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=f2c3eb9bb0ef77517976f8be926a77a574da8fe3;p=uclinux-h8%2Flinux.git block: factor out a bvec_alloc_gfp helper Clean up bvec_alloc a little by factoring out a helper for the gfp_t manipulations. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- diff --git a/block/bio.c b/block/bio.c index 2c359dadfdf6..c2152c4bf8a3 100644 --- a/block/bio.c +++ b/block/bio.c @@ -159,6 +159,16 @@ void bvec_free(mempool_t *pool, struct bio_vec *bv, unsigned int idx) } } +/* + * Make the first allocation restricted and don't dump info on allocation + * failures, since we'll fall back to the mempool in case of failure. + */ +static inline gfp_t bvec_alloc_gfp(gfp_t gfp) +{ + return (gfp & ~(__GFP_DIRECT_RECLAIM | __GFP_IO)) | + __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN; +} + struct bio_vec *bvec_alloc(gfp_t gfp_mask, int nr, unsigned long *idx, mempool_t *pool) { @@ -199,20 +209,12 @@ fallback: bvl = mempool_alloc(pool, gfp_mask); } else { struct biovec_slab *bvs = bvec_slabs + *idx; - gfp_t __gfp_mask = gfp_mask & ~(__GFP_DIRECT_RECLAIM | __GFP_IO); - - /* - * Make this allocation restricted and don't dump info on - * allocation failures, since we'll fallback to the mempool - * in case of failure. - */ - __gfp_mask |= __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN; /* * Try a slab allocation. If this fails and __GFP_DIRECT_RECLAIM * is set, retry with the 1-entry mempool */ - bvl = kmem_cache_alloc(bvs->slab, __gfp_mask); + bvl = kmem_cache_alloc(bvs->slab, bvec_alloc_gfp(gfp_mask)); if (unlikely(!bvl && (gfp_mask & __GFP_DIRECT_RECLAIM))) { *idx = BVEC_POOL_MAX; goto fallback;