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| author | Liam R. Howlett <Liam.Howlett@Oracle.com> | 2022-09-06 22:49:02 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-09-27 05:46:24 +0300 |
| commit | 66850be55e8e5f371db2c091751a932a656c5f4d (patch) | |
| tree | c46624bc79965e5d99e31af4a598defe40b83e5f /mm/mlock.c | |
| parent | ba0aff8ea6ff0ba4dacfc896facadf3d91c8cd8a (diff) | |
| download | linux-66850be55e8e5f371db2c091751a932a656c5f4d.tar.xz | |
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.
Link: https://lkml.kernel.org/r/20220906194824.2110408-57-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Tested-by: Yu Zhao <yuzhao@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/mlock.c')
0 files changed, 0 insertions, 0 deletions