diff options
| author | Huang Ying <ying.huang@intel.com> | 2023-05-29 08:13:53 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-06-10 01:25:49 +0200 |
| commit | 3ecdeb0f876e91c4a7129ba2ba5baa530aa6c4f9 (patch) | |
| tree | fb774a8ead845b889170e7cbd50f6407402c30c9 /mm/swapfile.c | |
| parent | swap, __read_swap_cache_async(): enlarge get/put_swap_device protection range (diff) | |
| download | linux-3ecdeb0f876e91c4a7129ba2ba5baa530aa6c4f9.tar.xz linux-3ecdeb0f876e91c4a7129ba2ba5baa530aa6c4f9.zip | |
swap: remove __swp_swapcount()
__swp_swapcount() just encloses the calling to swap_swapcount() with
get/put_swap_device(). It is called in __read_swap_cache_async() only,
which encloses the calling with get/put_swap_device() already. So,
__read_swap_cache_async() can call swap_swapcount() directly.
Link: https://lkml.kernel.org/r/20230529061355.125791-4-ying.huang@intel.com
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Chris Li (Google) <chrisl@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/swapfile.c')
| -rw-r--r-- | mm/swapfile.c | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index cf8b16b6a98e..2d264efe90d2 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -1444,7 +1444,7 @@ int __swap_count(swp_entry_t entry) * This does not give an exact answer when swap count is continued, * but does include the high COUNT_CONTINUED flag to allow for that. */ -static int swap_swapcount(struct swap_info_struct *si, swp_entry_t entry) +int swap_swapcount(struct swap_info_struct *si, swp_entry_t entry) { pgoff_t offset = swp_offset(entry); struct swap_cluster_info *ci; @@ -1458,24 +1458,6 @@ static int swap_swapcount(struct swap_info_struct *si, swp_entry_t entry) /* * How many references to @entry are currently swapped out? - * This does not give an exact answer when swap count is continued, - * but does include the high COUNT_CONTINUED flag to allow for that. - */ -int __swp_swapcount(swp_entry_t entry) -{ - int count = 0; - struct swap_info_struct *si; - - si = get_swap_device(entry); - if (si) { - count = swap_swapcount(si, entry); - put_swap_device(si); - } - return count; -} - -/* - * How many references to @entry are currently swapped out? * This considers COUNT_CONTINUED so it returns exact answer. */ int swp_swapcount(swp_entry_t entry) |