diff options
| -rw-r--r-- | fs/gfs2/daemon.c | 24 | ||||
| -rw-r--r-- | fs/gfs2/daemon.h | 1 | ||||
| -rw-r--r-- | fs/gfs2/glock.c | 63 | ||||
| -rw-r--r-- | fs/gfs2/glock.h | 4 | ||||
| -rw-r--r-- | fs/gfs2/incore.h | 2 | ||||
| -rw-r--r-- | fs/gfs2/main.c | 3 | ||||
| -rw-r--r-- | fs/gfs2/ops_fstype.c | 9 | ||||
| -rw-r--r-- | fs/gfs2/ops_super.c | 1 | ||||
| -rw-r--r-- | fs/gfs2/super.c | 1 | ||||
| -rw-r--r-- | fs/gfs2/sys.c | 2 |
10 files changed, 53 insertions, 57 deletions
diff --git a/fs/gfs2/daemon.c b/fs/gfs2/daemon.c index 3548d9f31e0..3731ab0771d 100644 --- a/fs/gfs2/daemon.c +++ b/fs/gfs2/daemon.c @@ -35,30 +35,6 @@ The kthread functions used to start these daemons block and flush signals. */ /** - * gfs2_scand - Look for cached glocks and inodes to toss from memory - * @sdp: Pointer to GFS2 superblock - * - * One of these daemons runs, finding candidates to add to sd_reclaim_list. - * See gfs2_glockd() - */ - -int gfs2_scand(void *data) -{ - struct gfs2_sbd *sdp = data; - unsigned long t; - - while (!kthread_should_stop()) { - gfs2_scand_internal(sdp); - t = gfs2_tune_get(sdp, gt_scand_secs) * HZ; - if (freezing(current)) - refrigerator(); - schedule_timeout_interruptible(t); - } - - return 0; -} - -/** * gfs2_glockd - Reclaim unused glock structures * @sdp: Pointer to GFS2 superblock * diff --git a/fs/gfs2/daemon.h b/fs/gfs2/daemon.h index 801007120fb..0de9b355795 100644 --- a/fs/gfs2/daemon.h +++ b/fs/gfs2/daemon.h @@ -10,7 +10,6 @@ #ifndef __DAEMON_DOT_H__ #define __DAEMON_DOT_H__ -int gfs2_scand(void *data); int gfs2_glockd(void *data); int gfs2_recoverd(void *data); int gfs2_logd(void *data); diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 0054b7df714..559937c710f 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -25,6 +25,8 @@ #include <asm/uaccess.h> #include <linux/seq_file.h> #include <linux/debugfs.h> +#include <linux/kthread.h> +#include <linux/freezer.h> #include "gfs2.h" #include "incore.h" @@ -58,6 +60,8 @@ static void gfs2_glock_xmote_th(struct gfs2_glock *gl, struct gfs2_holder *gh); static void gfs2_glock_drop_th(struct gfs2_glock *gl); static DECLARE_RWSEM(gfs2_umount_flush_sem); static struct dentry *gfs2_root; +static struct task_struct *scand_process; +static unsigned int scand_secs = 5; #define GFS2_GL_HASH_SHIFT 15 #define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT) @@ -1627,7 +1631,7 @@ static int examine_bucket(glock_examiner examiner, struct gfs2_sbd *sdp, goto out; gl = list_entry(head->first, struct gfs2_glock, gl_list); while(1) { - if (gl->gl_sbd == sdp) { + if (!sdp || gl->gl_sbd == sdp) { gfs2_glock_hold(gl); read_unlock(gl_lock_addr(hash)); if (prev) @@ -1645,6 +1649,7 @@ out: read_unlock(gl_lock_addr(hash)); if (prev) gfs2_glock_put(prev); + cond_resched(); return has_entries; } @@ -1673,20 +1678,6 @@ out_schedule: } /** - * gfs2_scand_internal - Look for glocks and inodes to toss from memory - * @sdp: the filesystem - * - */ - -void gfs2_scand_internal(struct gfs2_sbd *sdp) -{ - unsigned int x; - - for (x = 0; x < GFS2_GL_HASH_SIZE; x++) - examine_bucket(scan_glock, sdp, x); -} - -/** * clear_glock - look at a glock and see if we can free it from glock cache * @gl: the glock to look at * @@ -1973,6 +1964,35 @@ static int gfs2_dump_lockstate(struct gfs2_sbd *sdp) return error; } +/** + * gfs2_scand - Look for cached glocks and inodes to toss from memory + * @sdp: Pointer to GFS2 superblock + * + * One of these daemons runs, finding candidates to add to sd_reclaim_list. + * See gfs2_glockd() + */ + +static int gfs2_scand(void *data) +{ + unsigned x; + unsigned delay; + + while (!kthread_should_stop()) { + for (x = 0; x < GFS2_GL_HASH_SIZE; x++) + examine_bucket(scan_glock, NULL, x); + if (freezing(current)) + refrigerator(); + delay = scand_secs; + if (delay < 1) + delay = 1; + schedule_timeout_interruptible(delay * HZ); + } + + return 0; +} + + + int __init gfs2_glock_init(void) { unsigned i; @@ -1984,9 +2004,22 @@ int __init gfs2_glock_init(void) rwlock_init(&gl_hash_locks[i]); } #endif + + scand_process = kthread_run(gfs2_scand, NULL, "gfs2_scand"); + if (IS_ERR(scand_process)) + return PTR_ERR(scand_process); + return 0; } +void gfs2_glock_exit(void) +{ + kthread_stop(scand_process); +} + +module_param(scand_secs, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(scand_secs, "The number of seconds between scand runs"); + static int gfs2_glock_iter_next(struct glock_iter *gi) { struct gfs2_glock *gl; diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index 7721ca3fff9..f7a8e626aa0 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -132,11 +132,11 @@ void gfs2_glock_cb(void *cb_data, unsigned int type, void *data); void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl); void gfs2_reclaim_glock(struct gfs2_sbd *sdp); - -void gfs2_scand_internal(struct gfs2_sbd *sdp); void gfs2_gl_hash_clear(struct gfs2_sbd *sdp, int wait); int __init gfs2_glock_init(void); +void gfs2_glock_exit(void); + int gfs2_create_debugfs_file(struct gfs2_sbd *sdp); void gfs2_delete_debugfs_file(struct gfs2_sbd *sdp); int gfs2_register_debugfs(void); diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 170ba93829c..1390b30daf1 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -429,7 +429,6 @@ struct gfs2_tune { unsigned int gt_log_flush_secs; unsigned int gt_jindex_refresh_secs; /* Check for new journal index */ - unsigned int gt_scand_secs; unsigned int gt_recoverd_secs; unsigned int gt_logd_secs; unsigned int gt_quotad_secs; @@ -574,7 +573,6 @@ struct gfs2_sbd { /* Daemon stuff */ - struct task_struct *sd_scand_process; struct task_struct *sd_recoverd_process; struct task_struct *sd_logd_process; struct task_struct *sd_quotad_process; diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c index d5d4e68b880..79c91fd8381 100644 --- a/fs/gfs2/main.c +++ b/fs/gfs2/main.c @@ -107,6 +107,8 @@ static int __init init_gfs2_fs(void) fail_unregister: unregister_filesystem(&gfs2_fs_type); fail: + gfs2_glock_exit(); + if (gfs2_bufdata_cachep) kmem_cache_destroy(gfs2_bufdata_cachep); @@ -127,6 +129,7 @@ fail: static void __exit exit_gfs2_fs(void) { + gfs2_glock_exit(); gfs2_unregister_debugfs(); unregister_filesystem(&gfs2_fs_type); unregister_filesystem(&gfs2meta_fs_type); diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 9a5e84038dd..58c730be207 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -160,14 +160,6 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, if (undo) goto fail_trans; - p = kthread_run(gfs2_scand, sdp, "gfs2_scand"); - error = IS_ERR(p); - if (error) { - fs_err(sdp, "can't start scand thread: %d\n", error); - return error; - } - sdp->sd_scand_process = p; - for (sdp->sd_glockd_num = 0; sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; sdp->sd_glockd_num++) { @@ -228,7 +220,6 @@ fail: while (sdp->sd_glockd_num--) kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); - kthread_stop(sdp->sd_scand_process); return error; } diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c index 603d940f115..4316690d86f 100644 --- a/fs/gfs2/ops_super.c +++ b/fs/gfs2/ops_super.c @@ -92,7 +92,6 @@ static void gfs2_put_super(struct super_block *sb) kthread_stop(sdp->sd_recoverd_process); while (sdp->sd_glockd_num--) kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); - kthread_stop(sdp->sd_scand_process); if (!(sb->s_flags & MS_RDONLY)) { error = gfs2_make_fs_ro(sdp); diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index f916b9740c7..55898023782 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -58,7 +58,6 @@ void gfs2_tune_init(struct gfs2_tune *gt) gt->gt_incore_log_blocks = 1024; gt->gt_log_flush_secs = 60; gt->gt_jindex_refresh_secs = 60; - gt->gt_scand_secs = 15; gt->gt_recoverd_secs = 60; gt->gt_logd_secs = 1; gt->gt_quotad_secs = 5; diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index c26c21b53c1..ba3a1729cc1 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -442,7 +442,6 @@ TUNE_ATTR(quota_simul_sync, 1); TUNE_ATTR(quota_cache_secs, 1); TUNE_ATTR(stall_secs, 1); TUNE_ATTR(statfs_quantum, 1); -TUNE_ATTR_DAEMON(scand_secs, scand_process); TUNE_ATTR_DAEMON(recoverd_secs, recoverd_process); TUNE_ATTR_DAEMON(logd_secs, logd_process); TUNE_ATTR_DAEMON(quotad_secs, quotad_process); @@ -464,7 +463,6 @@ static struct attribute *tune_attrs[] = { &tune_attr_quota_cache_secs.attr, &tune_attr_stall_secs.attr, &tune_attr_statfs_quantum.attr, - &tune_attr_scand_secs.attr, &tune_attr_recoverd_secs.attr, &tune_attr_logd_secs.attr, &tune_attr_quotad_secs.attr, |