]> www.infradead.org Git - users/jedix/linux-maple.git/commit
mm/mempolicy: use vma iterator & maple state instead of vma linked list
authorLiam R. Howlett <Liam.Howlett@Oracle.com>
Wed, 20 Jul 2022 02:18:01 +0000 (02:18 +0000)
committerLiam R. Howlett <Liam.Howlett@oracle.com>
Tue, 6 Sep 2022 19:44:25 +0000 (15:44 -0400)
commit709cc62dbd985dad754fa71636f7be3128c41984
treef1048b47b78bc52d1031ccf9cc3f172e5225eb0d
parentd332ae9e0609d02f19f8be55b09cba2a26e324b8
mm/mempolicy: use vma iterator & maple state instead of vma linked list

Reworked the way mbind_range() finds the first VMA to reuse the maple
state and limit the number of tree walks needed.

Note, this drops the VM_BUG_ON(!vma) call, which would catch a start
address higher than the last VMA.  The code was written in a way that
allowed no VMA updates to occur and still return success.  There should be
no functional change to this scenario with the new code.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
mm/mempolicy.c