> diff -puN fs/drop_caches.c~update-drop_caches-documentation fs/drop_caches.c
> --- linux-2.6.git/fs/drop_caches.c~update-drop_caches-documentation 2010-09-16 09:43:52.000000000 -0700
> +++ linux-2.6.git-dave/fs/drop_caches.c 2010-09-16 09:43:52.000000000 -0700
> @@ -47,6 +47,8 @@ int drop_caches_sysctl_handler(ctl_table
> {
> proc_dointvec_minmax(table, write, buffer, length, ppos);
> if (write) {
> + printk(KERN_NOTICE "%s (%d): dropped kernel caches: %d\n",
> + current->comm, task_pid_nr(current), sysctl_drop_caches);
> if (sysctl_drop_caches & 1)
> iterate_supers(drop_pagecache_sb, NULL);
> if (sysctl_drop_caches & 2)
Can't you print it only once?
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