evie/android_kernel_oneplus_msm8998
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Merge "mm: cma: check the max limit for cma allocation"

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Linux Build Service Account 2016-12-19 00:44:42 -08:00 • committed by Gerrit - the friendly Code Review server
commit 0bdc62e764
1 changed files with 3 additions and 0 deletions
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mm/cma.c
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@ -392,6 +392,9 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align)
bitmap_maxno = cma_bitmap_maxno(cma);
bitmap_count = cma_bitmap_pages_to_bits(cma, count);
if (bitmap_count > bitmap_maxno)
return NULL;
for (;;) {
mutex_lock(&cma->lock);
bitmap_no = bitmap_find_next_zero_area_off(cma->bitmap,