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mm: vmalloc: refactor vm_area_alloc_pages() function
The aim is to simplify and making the vm_area_alloc_pages() function less confusing as it became more clogged nowadays: - eliminate a "bulk_gfp" variable and do not overwrite a gfp flag for bulk allocator; - drop __GFP_NOFAIL flag for high-order-page requests on upper layer. It becomes less spread between levels when it comes to __GFP_NOFAIL allocations; - add a comment about a fallback path if high-order attempt is unsuccessful because for such cases __GFP_NOFAIL is dropped; - fix a typo in a commit message. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Uladzislau Rezki (Sony) <[email protected]> Acked-by: Michal Hocko <[email protected]> Reviewed-by: Baoquan He <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Oleksiy Avramchenko <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
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