diff options
| author | Kaixiong Yu <yukaixiong@huawei.com> | 2025-01-11 15:07:37 +0800 |
|---|---|---|
| committer | Joel Granados <joel.granados@kernel.org> | 2025-02-07 16:53:03 +0100 |
| commit | 73aa354af21d4c09b31e9b287f4cb32a9b4e9c8c (patch) | |
| tree | ecfd30101dfb877a3896400069e4733f30a80506 /mm/filemap.c | |
| parent | b8974b89603c601f64b302d80129b0faf4879199 (diff) | |
mm: filemap: move sysctl to mm/filemap.c
This moves the filemap related sysctl to mm/filemap.c, and
removes the redundant external variable declaration.
Signed-off-by: Kaixiong Yu <yukaixiong@huawei.com>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Joel Granados <joel.granados@kernel.org>
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 804d7365680c..004d78767804 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -47,6 +47,7 @@ #include <linux/splice.h> #include <linux/rcupdate_wait.h> #include <linux/sched/mm.h> +#include <linux/sysctl.h> #include <linux/fsnotify.h> #include <asm/pgalloc.h> #include <asm/tlbflush.h> @@ -1078,6 +1079,19 @@ static wait_queue_head_t *folio_waitqueue(struct folio *folio) return &folio_wait_table[hash_ptr(folio, PAGE_WAIT_TABLE_BITS)]; } +/* How many times do we accept lock stealing from under a waiter? */ +static int sysctl_page_lock_unfairness = 5; +static const struct ctl_table filemap_sysctl_table[] = { + { + .procname = "page_lock_unfairness", + .data = &sysctl_page_lock_unfairness, + .maxlen = sizeof(sysctl_page_lock_unfairness), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + } +}; + void __init pagecache_init(void) { int i; @@ -1086,6 +1100,7 @@ void __init pagecache_init(void) init_waitqueue_head(&folio_wait_table[i]); page_writeback_init(); + register_sysctl_init("vm", filemap_sysctl_table); } /* @@ -1233,9 +1248,6 @@ static inline bool folio_trylock_flag(struct folio *folio, int bit_nr, return true; } -/* How many times do we accept lock stealing from under a waiter? */ -int sysctl_page_lock_unfairness = 5; - static inline int folio_wait_bit_common(struct folio *folio, int bit_nr, int state, enum behavior behavior) { |