The patch titled
Subject: drivers/cma: don't fail if migration returns -EAGAIN
has been added to the -mm tree. Its filename is
drivers-cma-dont-fail-if-migration-returns-eagain.patch
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------------------------------------------------------
From: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Subject: drivers/cma: don't fail if migration returns -EAGAIN
alloc_contig_range() might return -EAGAIN if migrate_pages() fails for
some temporarily locked pages. Such a case should not be fatal to
dma_alloc_from_contiguous(), which should retry the allocation, as in the
-EBUSY case.
Reported-by: Haojian Zhuang <haojian.zhuang@xxxxxxxxx>
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/base/dma-contiguous.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/base/dma-contiguous.c~drivers-cma-dont-fail-if-migration-returns-eagain drivers/base/dma-contiguous.c
--- a/drivers/base/dma-contiguous.c~drivers-cma-dont-fail-if-migration-returns-eagain
+++ a/drivers/base/dma-contiguous.c
@@ -346,7 +346,7 @@ struct page *dma_alloc_from_contiguous(s
if (ret == 0) {
bitmap_set(cma->bitmap, pageno, count);
break;
- } else if (ret != -EBUSY) {
+ } else if (ret != -EBUSY && ret != -EAGAIN) {
goto error;
}
pr_debug("%s(): memory range at %p is busy, retrying\n",
_
Subject: Subject: drivers/cma: don't fail if migration returns -EAGAIN
Patches currently in -mm which might be from m.szyprowski@xxxxxxxxxxx are
origin.patch
linux-next.patch
drivers-cma-dont-fail-if-migration-returns-eagain.patch
mm-compaction-handle-incorrect-migrate_unmovable-type-pageblocks.patch
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