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| author | Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2014-08-07 03:05:30 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-07 05:01:16 +0400 |
| commit | b7155e76a702d97553660828347b9f10858b4dd5 (patch) | |
| tree | 90ff541b79089e61d20276d28df13adda200fdff /mm/cma.c | |
| parent | fc95ca7284bc54953165cba76c3228bd2cdb9591 (diff) | |
| download | linux-b7155e76a702d97553660828347b9f10858b4dd5.tar.xz | |
mm, CMA: clean-up CMA allocation error path
We can remove one call sites for clear_cma_bitmap() if we first call it
before checking error number.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Michal Nazarewicz <mina86@mina86.com>
Reviewed-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Gleb Natapov <gleb@kernel.org>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/cma.c')
| -rw-r--r-- | mm/cma.c | 7 |
1 files changed, 4 insertions, 3 deletions
@@ -285,11 +285,12 @@ struct page *cma_alloc(struct cma *cma, int count, unsigned int align) if (ret == 0) { page = pfn_to_page(pfn); break; - } else if (ret != -EBUSY) { - cma_clear_bitmap(cma, pfn, count); - break; } + cma_clear_bitmap(cma, pfn, count); + if (ret != -EBUSY) + break; + pr_debug("%s(): memory range at %p is busy, retrying\n", __func__, pfn_to_page(pfn)); /* try again with a bit different memory target */ |