diff options
| author | Tim Chen <[email protected]> | 2017-02-22 15:45:36 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2017-02-22 16:41:30 -0800 |
| commit | 7c00bafee87c7bac7ed9eced7c161f8e5332cb4e (patch) | |
| tree | 05833c1d7a5c40bcee488a19d72292b3fab06f5c /include/linux | |
| parent | 36005bae205da3eef0016a5c96a34f10a68afa1e (diff) | |
mm/swap: free swap slots in batch
Add new functions that free unused swap slots in batches without the
need to reacquire swap info lock. This improves scalability and reduce
lock contention.
Link: http://lkml.kernel.org/r/c25e0fcdfd237ec4ca7db91631d3b9f6ed23824e.1484082593.git.tim.c.chen@linux.intel.com
Signed-off-by: Tim Chen <[email protected]>
Signed-off-by: "Huang, Ying" <[email protected]>
Cc: Aaron Lu <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: Christian Borntraeger <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Hillf Danton <[email protected]>
Cc: Huang Ying <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Jonathan Corbet <[email protected]> escreveu:
Cc: Kirill A. Shutemov <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Shaohua Li <[email protected]>
Cc: Vladimir Davydov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/swap.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h index 956eae8a8edf..bcc0b18f96d2 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -394,6 +394,7 @@ extern int swap_duplicate(swp_entry_t); extern int swapcache_prepare(swp_entry_t); extern void swap_free(swp_entry_t); extern void swapcache_free(swp_entry_t); +extern void swapcache_free_entries(swp_entry_t *entries, int n); extern int free_swap_and_cache(swp_entry_t); extern int swap_type_of(dev_t, sector_t, struct block_device **); extern unsigned int count_swap_pages(int, int); |