diff options
| author | Minchan Kim <minchan@kernel.org> | 2021-05-05 03:36:57 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-05-05 20:27:24 +0200 |
| commit | 361a2a229fa31ab7f2b236b5946e434964d00762 (patch) | |
| tree | 74246feb78afbe5ab7c443d3578d12a784759ff4 /mm/mempolicy.c | |
| parent | mm: disable LRU pagevec during the migration temporarily (diff) | |
| download | linux-361a2a229fa31ab7f2b236b5946e434964d00762.tar.xz linux-361a2a229fa31ab7f2b236b5946e434964d00762.zip | |
mm: replace migrate_[prep|finish] with lru_cache_[disable|enable]
Currently, migrate_[prep|finish] is merely a wrapper of
lru_cache_[disable|enable]. There is not much to gain from having
additional abstraction.
Use lru_cache_[disable|enable] instead of migrate_[prep|finish], which
would be more descriptive.
note: migrate_prep_local in compaction.c changed into lru_add_drain to
avoid CPU schedule cost with involving many other CPUs to keep old
behavior.
Link: https://lkml.kernel.org/r/20210319175127.886124-2-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Chris Goldsworthy <cgoldswo@codeaurora.org>
Cc: John Dias <joaodias@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Oliver Sang <oliver.sang@intel.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 3b95e169e97d..c0343c742bed 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1124,7 +1124,7 @@ int do_migrate_pages(struct mm_struct *mm, const nodemask_t *from, int err = 0; nodemask_t tmp; - migrate_prep(); + lru_cache_disable(); mmap_read_lock(mm); @@ -1209,7 +1209,7 @@ int do_migrate_pages(struct mm_struct *mm, const nodemask_t *from, } mmap_read_unlock(mm); - migrate_finish(); + lru_cache_enable(); if (err < 0) return err; return busy; @@ -1325,7 +1325,7 @@ static long do_mbind(unsigned long start, unsigned long len, if (flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL)) { - migrate_prep(); + lru_cache_disable(); } { NODEMASK_SCRATCH(scratch); @@ -1374,7 +1374,7 @@ up_out: mpol_out: mpol_put(new); if (flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL)) - migrate_finish(); + lru_cache_enable(); return err; } |