diff options
| author | Miaohe Lin <[email protected]> | 2020-12-14 19:06:07 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-12-15 12:13:39 -0800 |
| commit | 661c7566438119cbf490b0b359ee69a0f9dbaf9a (patch) | |
| tree | 9940b14d353b301aeed64667987a63ce37c476e2 | |
| parent | 9d9a03340309cb8065503cfa3c5c5fc8b7670230 (diff) | |
mm/swapfile.c: use memset to fill the swap_map with SWAP_HAS_CACHE
We could use helper memset to fill the swap_map with SWAP_HAS_CACHE instead
of a direct loop here to simplify the code. Also we can remove the local
variable i and map this way.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Miaohe Lin <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/swapfile.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index 83df467e1135..1c0a829f7311 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -975,8 +975,7 @@ static int swap_alloc_cluster(struct swap_info_struct *si, swp_entry_t *slot) { unsigned long idx; struct swap_cluster_info *ci; - unsigned long offset, i; - unsigned char *map; + unsigned long offset; /* * Should not even be attempting cluster allocations when huge @@ -996,9 +995,7 @@ static int swap_alloc_cluster(struct swap_info_struct *si, swp_entry_t *slot) alloc_cluster(si, idx); cluster_set_count_flag(ci, SWAPFILE_CLUSTER, CLUSTER_FLAG_HUGE); - map = si->swap_map + offset; - for (i = 0; i < SWAPFILE_CLUSTER; i++) - map[i] = SWAP_HAS_CACHE; + memset(si->swap_map + offset, SWAP_HAS_CACHE, SWAPFILE_CLUSTER); unlock_cluster(ci); swap_range_alloc(si, offset, SWAPFILE_CLUSTER); *slot = swp_entry(si->type, offset); |