From 579b62faa5fb16ffeeb88cda5e2c4e95730881af Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Tue, 6 Nov 2012 09:50:47 -0500 Subject: xfs: add background scanning to clear eofblocks inodes Create a new mount workqueue and delayed_work to enable background scanning and freeing of eofblocks inodes. The scanner kicks in once speculative preallocation occurs and stops requeueing itself when no eofblocks inodes exist. The scan interval is based on the new 'speculative_prealloc_lifetime' tunable (default to 5m). The background scanner performs unfiltered, best effort scans (which skips inodes under lock contention or with a dirty cache mapping). Signed-off-by: Brian Foster Reviewed-by: Mark Tinguely Reviewed-by: Dave Chinner Signed-off-by: Ben Myers --- fs/xfs/xfs_sysctl.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'fs/xfs/xfs_sysctl.c') diff --git a/fs/xfs/xfs_sysctl.c b/fs/xfs/xfs_sysctl.c index ee2d2adaa43..2801b5ce6cd 100644 --- a/fs/xfs/xfs_sysctl.c +++ b/fs/xfs/xfs_sysctl.c @@ -202,6 +202,15 @@ static ctl_table xfs_table[] = { .extra1 = &xfs_params.fstrm_timer.min, .extra2 = &xfs_params.fstrm_timer.max, }, + { + .procname = "speculative_prealloc_lifetime", + .data = &xfs_params.eofb_timer.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.eofb_timer.min, + .extra2 = &xfs_params.eofb_timer.max, + }, /* please keep this the last entry */ #ifdef CONFIG_PROC_FS { -- cgit v1.2.3