]> www.infradead.org Git - users/jedix/linux-maple.git/commit
mm/mmap: use advanced maple tree API for mmap_region()
authorLiam R. Howlett <Liam.Howlett@Oracle.com>
Mon, 22 Aug 2022 15:05:09 +0000 (15:05 +0000)
committerAndrew Morton <akpm@linux-foundation.org>
Mon, 22 Aug 2022 22:58:23 +0000 (15:58 -0700)
commit677a5f0f64283bf5c8637bd89abbf0034aae6ad9
tree40b45f66fce080c0ed134d337bd52f3dd7e8d284
parentc7ab95c04537787d085b747e7f022ad861fa71f6
mm/mmap: use advanced maple tree API for mmap_region()

Changing mmap_region() to use the maple tree state and the advanced maple
tree interface allows for a lot less tree walking.

This change removes the last caller of munmap_vma_range(), so drop this
unused function.

Add vma_expand() to expand a VMA if possible by doing the necessary
hugepage check, uprobe_munmap of files, dcache flush, modifications then
undoing the detaches, etc.

Link: https://lkml.kernel.org/r/20220822150128.1562046-25-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: SeongJae Park <sj@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
mm/mmap.c