mm: cma: retry only on EBUSY



Retry the cma alloc only when alloc_contig_range returns
-EBUSY. This avoids unnecessary retries when the heap is
full.

Change-Id: If4626f0a0bc14e4b3a500283eb5a4c33b78fb6f2
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>

parent 91fb1c20

mm/cma.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -466,7 +466,8 @@ struct page cma_alloc(struct cma cma, size_t count, unsigned int align)
		bitmap_maxno, start, bitmap_count, mask,
		offset);
		if (bitmap_no >= bitmap_maxno) {
		if (retry_after_sleep < max_retries) {
		if ((retry_after_sleep < max_retries) &&
		(ret == -EBUSY)) {
		start = 0;
		/*
		* update max retries if available free regions