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579b62faa5
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 <bfoster@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
261 lines
6.4 KiB
C
261 lines
6.4 KiB
C
/*
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* Copyright (c) 2001-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.h"
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#include <linux/sysctl.h>
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#include <linux/proc_fs.h>
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#include "xfs_error.h"
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static struct ctl_table_header *xfs_table_header;
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#ifdef CONFIG_PROC_FS
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STATIC int
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xfs_stats_clear_proc_handler(
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ctl_table *ctl,
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int write,
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void __user *buffer,
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size_t *lenp,
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loff_t *ppos)
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{
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int c, ret, *valp = ctl->data;
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__uint32_t vn_active;
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ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
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if (!ret && write && *valp) {
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xfs_notice(NULL, "Clearing xfsstats");
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for_each_possible_cpu(c) {
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preempt_disable();
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/* save vn_active, it's a universal truth! */
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vn_active = per_cpu(xfsstats, c).vn_active;
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memset(&per_cpu(xfsstats, c), 0,
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sizeof(struct xfsstats));
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per_cpu(xfsstats, c).vn_active = vn_active;
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preempt_enable();
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}
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xfs_stats_clear = 0;
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}
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return ret;
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}
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STATIC int
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xfs_panic_mask_proc_handler(
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ctl_table *ctl,
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int write,
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void __user *buffer,
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size_t *lenp,
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loff_t *ppos)
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{
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int ret, *valp = ctl->data;
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ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
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if (!ret && write) {
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xfs_panic_mask = *valp;
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#ifdef DEBUG
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xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES);
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#endif
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}
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return ret;
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}
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#endif /* CONFIG_PROC_FS */
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static ctl_table xfs_table[] = {
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{
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.procname = "irix_sgid_inherit",
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.data = &xfs_params.sgid_inherit.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.sgid_inherit.min,
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.extra2 = &xfs_params.sgid_inherit.max
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},
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{
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.procname = "irix_symlink_mode",
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.data = &xfs_params.symlink_mode.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.symlink_mode.min,
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.extra2 = &xfs_params.symlink_mode.max
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},
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{
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.procname = "panic_mask",
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.data = &xfs_params.panic_mask.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = xfs_panic_mask_proc_handler,
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.extra1 = &xfs_params.panic_mask.min,
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.extra2 = &xfs_params.panic_mask.max
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},
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{
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.procname = "error_level",
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.data = &xfs_params.error_level.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.error_level.min,
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.extra2 = &xfs_params.error_level.max
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},
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{
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.procname = "xfssyncd_centisecs",
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.data = &xfs_params.syncd_timer.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.syncd_timer.min,
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.extra2 = &xfs_params.syncd_timer.max
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},
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{
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.procname = "inherit_sync",
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.data = &xfs_params.inherit_sync.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.inherit_sync.min,
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.extra2 = &xfs_params.inherit_sync.max
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},
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{
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.procname = "inherit_nodump",
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.data = &xfs_params.inherit_nodump.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.inherit_nodump.min,
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.extra2 = &xfs_params.inherit_nodump.max
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},
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{
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.procname = "inherit_noatime",
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.data = &xfs_params.inherit_noatim.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.inherit_noatim.min,
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.extra2 = &xfs_params.inherit_noatim.max
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},
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{
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.procname = "xfsbufd_centisecs",
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.data = &xfs_params.xfs_buf_timer.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.xfs_buf_timer.min,
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.extra2 = &xfs_params.xfs_buf_timer.max
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},
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{
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.procname = "age_buffer_centisecs",
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.data = &xfs_params.xfs_buf_age.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.xfs_buf_age.min,
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.extra2 = &xfs_params.xfs_buf_age.max
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},
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{
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.procname = "inherit_nosymlinks",
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.data = &xfs_params.inherit_nosym.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.inherit_nosym.min,
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.extra2 = &xfs_params.inherit_nosym.max
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},
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{
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.procname = "rotorstep",
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.data = &xfs_params.rotorstep.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.rotorstep.min,
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.extra2 = &xfs_params.rotorstep.max
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},
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{
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.procname = "inherit_nodefrag",
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.data = &xfs_params.inherit_nodfrg.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.inherit_nodfrg.min,
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.extra2 = &xfs_params.inherit_nodfrg.max
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},
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{
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.procname = "filestream_centisecs",
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.data = &xfs_params.fstrm_timer.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.fstrm_timer.min,
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.extra2 = &xfs_params.fstrm_timer.max,
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},
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{
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.procname = "speculative_prealloc_lifetime",
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.data = &xfs_params.eofb_timer.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &xfs_params.eofb_timer.min,
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.extra2 = &xfs_params.eofb_timer.max,
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},
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/* please keep this the last entry */
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#ifdef CONFIG_PROC_FS
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{
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.procname = "stats_clear",
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.data = &xfs_params.stats_clear.val,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = xfs_stats_clear_proc_handler,
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.extra1 = &xfs_params.stats_clear.min,
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.extra2 = &xfs_params.stats_clear.max
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},
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#endif /* CONFIG_PROC_FS */
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{}
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};
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static ctl_table xfs_dir_table[] = {
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{
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.procname = "xfs",
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.mode = 0555,
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.child = xfs_table
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},
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{}
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};
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static ctl_table xfs_root_table[] = {
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{
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.procname = "fs",
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.mode = 0555,
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.child = xfs_dir_table
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},
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{}
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};
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int
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xfs_sysctl_register(void)
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{
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xfs_table_header = register_sysctl_table(xfs_root_table);
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if (!xfs_table_header)
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return -ENOMEM;
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return 0;
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}
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void
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xfs_sysctl_unregister(void)
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{
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unregister_sysctl_table(xfs_table_header);
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}
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