diff options
Diffstat (limited to 'fs/drop_caches.c')
| -rw-r--r-- | fs/drop_caches.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/fs/drop_caches.c b/fs/drop_caches.c index b9575957a7c2..49f56a598ecb 100644 --- a/fs/drop_caches.c +++ b/fs/drop_caches.c @@ -14,7 +14,7 @@ #include "internal.h" /* A global variable is a bit ugly, but it keeps the code simple */ -int sysctl_drop_caches; +static int sysctl_drop_caches; static void drop_pagecache_sb(struct super_block *sb, void *unused) { @@ -28,7 +28,7 @@ static void drop_pagecache_sb(struct super_block *sb, void *unused) * inodes without pages but we deliberately won't in case * we need to reschedule to avoid softlockups. */ - if ((inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) || + if ((inode_state_read(inode) & (I_FREEING | I_WILL_FREE | I_NEW)) || (mapping_empty(inode->i_mapping) && !need_resched())) { spin_unlock(&inode->i_lock); continue; @@ -48,7 +48,7 @@ static void drop_pagecache_sb(struct super_block *sb, void *unused) iput(toput_inode); } -int drop_caches_sysctl_handler(struct ctl_table *table, int write, +static int drop_caches_sysctl_handler(const struct ctl_table *table, int write, void *buffer, size_t *length, loff_t *ppos) { int ret; @@ -77,3 +77,22 @@ int drop_caches_sysctl_handler(struct ctl_table *table, int write, } return 0; } + +static const struct ctl_table drop_caches_table[] = { + { + .procname = "drop_caches", + .data = &sysctl_drop_caches, + .maxlen = sizeof(int), + .mode = 0200, + .proc_handler = drop_caches_sysctl_handler, + .extra1 = SYSCTL_ONE, + .extra2 = SYSCTL_FOUR, + }, +}; + +static int __init init_vm_drop_caches_sysctls(void) +{ + register_sysctl_init("vm", drop_caches_table); + return 0; +} +fs_initcall(init_vm_drop_caches_sysctls); |