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authorUladzislau Rezki (Sony) <urezki@gmail.com>2021-11-05 13:39:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-06 13:30:37 -0700
commit066fed59d8a1bab4f3213e8fe413c54e4a76b77a (patch)
tree17eefc3480df5183ccbb1a5c2ae974542c706167 /lib/test_vmalloc.c
parent9f531973dff39c671219352573ad5df6d0d9a58c (diff)
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mm/vmalloc: check various alignments when debugging
Before we did not guarantee a free block with lowest start address for allocations with alignment >= PAGE_SIZE. Because an alignment overhead was included into a search length like below: length = size + align - 1; doing so we make sure that a bigger block would fit after applying an alignment adjustment. Now there is no such limitation, i.e. any alignment that user wants to apply will result to a lowest address of returned free area. Link: https://lkml.kernel.org/r/20211004142829.22222-2-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: David Hildenbrand <david@redhat.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Hocko <mhocko@suse.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Ping Fang <pifang@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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