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| author | Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2020-08-11 18:30:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-12 10:57:55 -0700 |
| commit | 3852f6768ede542ed48b9077bedf482c7ecb6327 (patch) | |
| tree | aa3cccf823bba4f79f3bc10f54326cd8eebd38c1 /mm/swapfile.c | |
| parent | 170b04b7ae49634df103810dad67b22cf8a99aa6 (diff) | |
| download | linux-stable-3852f6768ede542ed48b9077bedf482c7ecb6327.tar.gz linux-stable-3852f6768ede542ed48b9077bedf482c7ecb6327.tar.bz2 linux-stable-3852f6768ede542ed48b9077bedf482c7ecb6327.zip | |
mm/swapcache: support to handle the shadow entries
Workingset detection for anonymous page will be implemented in the
following patch and it requires to store the shadow entries into the
swapcache. This patch implements an infrastructure to store the shadow
entry in the swapcache.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Link: http://lkml.kernel.org/r/1595490560-15117-5-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swapfile.c')
| -rw-r--r-- | mm/swapfile.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index 82183432fdd0..e653eea1eb88 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -696,6 +696,7 @@ static void add_to_avail_list(struct swap_info_struct *p) static void swap_range_free(struct swap_info_struct *si, unsigned long offset, unsigned int nr_entries) { + unsigned long begin = offset; unsigned long end = offset + nr_entries - 1; void (*swap_slot_free_notify)(struct block_device *, unsigned long); @@ -721,6 +722,7 @@ static void swap_range_free(struct swap_info_struct *si, unsigned long offset, swap_slot_free_notify(si->bdev, offset); offset++; } + clear_shadow_from_swap_cache(si->type, begin, end); } static void set_cluster_next(struct swap_info_struct *si, unsigned long next) |