1b3b94faaSDavid Teigland /* 2b3b94faaSDavid Teigland * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 33a8a9a10SSteven Whitehouse * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 4b3b94faaSDavid Teigland * 5b3b94faaSDavid Teigland * This copyrighted material is made available to anyone wishing to use, 6b3b94faaSDavid Teigland * modify, copy, or redistribute it subject to the terms and conditions 7e9fc2aa0SSteven Whitehouse * of the GNU General Public License version 2. 8b3b94faaSDavid Teigland */ 9b3b94faaSDavid Teigland 10b3b94faaSDavid Teigland #include <linux/sched.h> 11b3b94faaSDavid Teigland #include <linux/spinlock.h> 12b3b94faaSDavid Teigland #include <linux/completion.h> 13b3b94faaSDavid Teigland #include <linux/buffer_head.h> 14b3b94faaSDavid Teigland #include <linux/module.h> 15b3b94faaSDavid Teigland #include <linux/kobject.h> 16b3b94faaSDavid Teigland #include <asm/uaccess.h> 17f057f6cdSSteven Whitehouse #include <linux/gfs2_ondisk.h> 1831e54b01SSteven Whitehouse #include <linux/genhd.h> 19b3b94faaSDavid Teigland 20b3b94faaSDavid Teigland #include "gfs2.h" 215c676f6dSSteven Whitehouse #include "incore.h" 22b3b94faaSDavid Teigland #include "sys.h" 23b3b94faaSDavid Teigland #include "super.h" 24b3b94faaSDavid Teigland #include "glock.h" 25b3b94faaSDavid Teigland #include "quota.h" 265c676f6dSSteven Whitehouse #include "util.h" 2764d576baSSteven Whitehouse #include "glops.h" 286ecd7c2dSTejun Heo #include "recovery.h" 29b3b94faaSDavid Teigland 3048c2b613SSteven Whitehouse struct gfs2_attr { 3148c2b613SSteven Whitehouse struct attribute attr; 3248c2b613SSteven Whitehouse ssize_t (*show)(struct gfs2_sbd *, char *); 3348c2b613SSteven Whitehouse ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); 3448c2b613SSteven Whitehouse }; 3548c2b613SSteven Whitehouse 3648c2b613SSteven Whitehouse static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, 3748c2b613SSteven Whitehouse char *buf) 3848c2b613SSteven Whitehouse { 3948c2b613SSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 4048c2b613SSteven Whitehouse struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); 4148c2b613SSteven Whitehouse return a->show ? a->show(sdp, buf) : 0; 4248c2b613SSteven Whitehouse } 4348c2b613SSteven Whitehouse 4448c2b613SSteven Whitehouse static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, 4548c2b613SSteven Whitehouse const char *buf, size_t len) 4648c2b613SSteven Whitehouse { 4748c2b613SSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 4848c2b613SSteven Whitehouse struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); 4948c2b613SSteven Whitehouse return a->store ? a->store(sdp, buf, len) : len; 5048c2b613SSteven Whitehouse } 5148c2b613SSteven Whitehouse 5252cf25d0SEmese Revfy static const struct sysfs_ops gfs2_attr_ops = { 5348c2b613SSteven Whitehouse .show = gfs2_attr_show, 5448c2b613SSteven Whitehouse .store = gfs2_attr_store, 5548c2b613SSteven Whitehouse }; 5648c2b613SSteven Whitehouse 5748c2b613SSteven Whitehouse 5848c2b613SSteven Whitehouse static struct kset *gfs2_kset; 5948c2b613SSteven Whitehouse 60b3b94faaSDavid Teigland static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) 61b3b94faaSDavid Teigland { 62c7227e46SBob Peterson return snprintf(buf, PAGE_SIZE, "%u:%u\n", 63c7227e46SBob Peterson MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev)); 64b3b94faaSDavid Teigland } 65b3b94faaSDavid Teigland 66b3b94faaSDavid Teigland static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) 67b3b94faaSDavid Teigland { 683204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname); 69b3b94faaSDavid Teigland } 70b3b94faaSDavid Teigland 7102e3cc70SSteven Whitehouse static int gfs2_uuid_valid(const u8 *uuid) 7202e3cc70SSteven Whitehouse { 7302e3cc70SSteven Whitehouse int i; 7402e3cc70SSteven Whitehouse 7502e3cc70SSteven Whitehouse for (i = 0; i < 16; i++) { 7602e3cc70SSteven Whitehouse if (uuid[i]) 7702e3cc70SSteven Whitehouse return 1; 7802e3cc70SSteven Whitehouse } 7902e3cc70SSteven Whitehouse return 0; 8002e3cc70SSteven Whitehouse } 8102e3cc70SSteven Whitehouse 8202e3cc70SSteven Whitehouse static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf) 8302e3cc70SSteven Whitehouse { 8432e471efSSteven Whitehouse struct super_block *s = sdp->sd_vfs; 8532e471efSSteven Whitehouse const u8 *uuid = s->s_uuid; 8602e3cc70SSteven Whitehouse buf[0] = '\0'; 8702e3cc70SSteven Whitehouse if (!gfs2_uuid_valid(uuid)) 8802e3cc70SSteven Whitehouse return 0; 89f0b34ae6SJoe Perches return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid); 9002e3cc70SSteven Whitehouse } 9102e3cc70SSteven Whitehouse 92b3b94faaSDavid Teigland static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) 93b3b94faaSDavid Teigland { 94d564053fSSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 95d564053fSSteven Whitehouse int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1; 96b3b94faaSDavid Teigland 97d564053fSSteven Whitehouse return snprintf(buf, PAGE_SIZE, "%u\n", frozen); 98b3b94faaSDavid Teigland } 99b3b94faaSDavid Teigland 100b3b94faaSDavid Teigland static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 101b3b94faaSDavid Teigland { 102d564053fSSteven Whitehouse int error; 103b3b94faaSDavid Teigland int n = simple_strtol(buf, NULL, 0); 104b3b94faaSDavid Teigland 105b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 106b3b94faaSDavid Teigland return -EACCES; 107b3b94faaSDavid Teigland 108b3b94faaSDavid Teigland switch (n) { 109b3b94faaSDavid Teigland case 0: 110d564053fSSteven Whitehouse error = thaw_super(sdp->sd_vfs); 111b3b94faaSDavid Teigland break; 112b3b94faaSDavid Teigland case 1: 113d564053fSSteven Whitehouse error = freeze_super(sdp->sd_vfs); 114b3b94faaSDavid Teigland break; 115b3b94faaSDavid Teigland default: 116d564053fSSteven Whitehouse return -EINVAL; 117b3b94faaSDavid Teigland } 118b3b94faaSDavid Teigland 119d564053fSSteven Whitehouse if (error) { 120b3b94faaSDavid Teigland fs_warn(sdp, "freeze %d error %d", n, error); 121d564053fSSteven Whitehouse return error; 122d564053fSSteven Whitehouse } 123b3b94faaSDavid Teigland 124d564053fSSteven Whitehouse return len; 125b3b94faaSDavid Teigland } 126b3b94faaSDavid Teigland 127b3b94faaSDavid Teigland static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) 128b3b94faaSDavid Teigland { 129b3b94faaSDavid Teigland unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); 1303204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", b); 131b3b94faaSDavid Teigland } 132b3b94faaSDavid Teigland 133b3b94faaSDavid Teigland static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 134b3b94faaSDavid Teigland { 135b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 136b3b94faaSDavid Teigland return -EACCES; 137b3b94faaSDavid Teigland 138b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 139b3b94faaSDavid Teigland return -EINVAL; 140b3b94faaSDavid Teigland 141b3b94faaSDavid Teigland gfs2_lm_withdraw(sdp, 142b3b94faaSDavid Teigland "GFS2: fsid=%s: withdrawing from cluster at user's request\n", 143b3b94faaSDavid Teigland sdp->sd_fsname); 144b3b94faaSDavid Teigland return len; 145b3b94faaSDavid Teigland } 146b3b94faaSDavid Teigland 147b3b94faaSDavid Teigland static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, 148b3b94faaSDavid Teigland size_t len) 149b3b94faaSDavid Teigland { 150b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 151b3b94faaSDavid Teigland return -EACCES; 152b3b94faaSDavid Teigland 153b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 154b3b94faaSDavid Teigland return -EINVAL; 155b3b94faaSDavid Teigland 1568c42d637SSteven Whitehouse gfs2_statfs_sync(sdp->sd_vfs, 0); 157b3b94faaSDavid Teigland return len; 158b3b94faaSDavid Teigland } 159b3b94faaSDavid Teigland 160b3b94faaSDavid Teigland static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, 161b3b94faaSDavid Teigland size_t len) 162b3b94faaSDavid Teigland { 163b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 164b3b94faaSDavid Teigland return -EACCES; 165b3b94faaSDavid Teigland 166b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 167b3b94faaSDavid Teigland return -EINVAL; 168b3b94faaSDavid Teigland 169ceed1723SJan Kara gfs2_quota_sync(sdp->sd_vfs, 0); 170b3b94faaSDavid Teigland return len; 171b3b94faaSDavid Teigland } 172b3b94faaSDavid Teigland 173b3b94faaSDavid Teigland static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, 174b3b94faaSDavid Teigland size_t len) 175b3b94faaSDavid Teigland { 176ea762338SSteven Whitehouse int error; 177cd915493SSteven Whitehouse u32 id; 178b3b94faaSDavid Teigland 179b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 180b3b94faaSDavid Teigland return -EACCES; 181b3b94faaSDavid Teigland 182b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 183b3b94faaSDavid Teigland 184ea762338SSteven Whitehouse error = gfs2_quota_refresh(sdp, 1, id); 185ea762338SSteven Whitehouse return error ? error : len; 186b3b94faaSDavid Teigland } 187b3b94faaSDavid Teigland 188b3b94faaSDavid Teigland static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, 189b3b94faaSDavid Teigland size_t len) 190b3b94faaSDavid Teigland { 191ea762338SSteven Whitehouse int error; 192cd915493SSteven Whitehouse u32 id; 193b3b94faaSDavid Teigland 194b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 195b3b94faaSDavid Teigland return -EACCES; 196b3b94faaSDavid Teigland 197b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 198b3b94faaSDavid Teigland 199ea762338SSteven Whitehouse error = gfs2_quota_refresh(sdp, 0, id); 200ea762338SSteven Whitehouse return error ? error : len; 201b3b94faaSDavid Teigland } 202b3b94faaSDavid Teigland 20364d576baSSteven Whitehouse static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 20464d576baSSteven Whitehouse { 20564d576baSSteven Whitehouse struct gfs2_glock *gl; 20664d576baSSteven Whitehouse const struct gfs2_glock_operations *glops; 20764d576baSSteven Whitehouse unsigned int glmode; 20864d576baSSteven Whitehouse unsigned int gltype; 20964d576baSSteven Whitehouse unsigned long long glnum; 21064d576baSSteven Whitehouse char mode[16]; 21164d576baSSteven Whitehouse int rv; 21264d576baSSteven Whitehouse 21364d576baSSteven Whitehouse if (!capable(CAP_SYS_ADMIN)) 21464d576baSSteven Whitehouse return -EACCES; 21564d576baSSteven Whitehouse 21664d576baSSteven Whitehouse rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, 21764d576baSSteven Whitehouse mode); 21864d576baSSteven Whitehouse if (rv != 3) 21964d576baSSteven Whitehouse return -EINVAL; 22064d576baSSteven Whitehouse 22164d576baSSteven Whitehouse if (strcmp(mode, "EX") == 0) 22264d576baSSteven Whitehouse glmode = LM_ST_UNLOCKED; 22364d576baSSteven Whitehouse else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) 22464d576baSSteven Whitehouse glmode = LM_ST_DEFERRED; 22564d576baSSteven Whitehouse else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) 22664d576baSSteven Whitehouse glmode = LM_ST_SHARED; 22764d576baSSteven Whitehouse else 22864d576baSSteven Whitehouse return -EINVAL; 22964d576baSSteven Whitehouse 23064d576baSSteven Whitehouse if (gltype > LM_TYPE_JOURNAL) 23164d576baSSteven Whitehouse return -EINVAL; 23213466985SSteven Whitehouse if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK) 23313466985SSteven Whitehouse glops = &gfs2_trans_glops; 23413466985SSteven Whitehouse else 23564d576baSSteven Whitehouse glops = gfs2_glops_list[gltype]; 23664d576baSSteven Whitehouse if (glops == NULL) 23764d576baSSteven Whitehouse return -EINVAL; 2386a99be5dSSteven Whitehouse if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) 239913a71d2SSteven Whitehouse fs_info(sdp, "demote interface used\n"); 24064d576baSSteven Whitehouse rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); 24164d576baSSteven Whitehouse if (rv) 24264d576baSSteven Whitehouse return rv; 24364d576baSSteven Whitehouse gfs2_glock_cb(gl, glmode); 24464d576baSSteven Whitehouse gfs2_glock_put(gl); 24564d576baSSteven Whitehouse return len; 24664d576baSSteven Whitehouse } 24764d576baSSteven Whitehouse 248b3b94faaSDavid Teigland 249b3b94faaSDavid Teigland #define GFS2_ATTR(name, mode, show, store) \ 250b3b94faaSDavid Teigland static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) 251b3b94faaSDavid Teigland 252b3b94faaSDavid Teigland GFS2_ATTR(id, 0444, id_show, NULL); 253b3b94faaSDavid Teigland GFS2_ATTR(fsname, 0444, fsname_show, NULL); 25402e3cc70SSteven Whitehouse GFS2_ATTR(uuid, 0444, uuid_show, NULL); 255b3b94faaSDavid Teigland GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); 256b3b94faaSDavid Teigland GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 257b3b94faaSDavid Teigland GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); 258b3b94faaSDavid Teigland GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); 259b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); 260b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); 26164d576baSSteven Whitehouse GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); 262b3b94faaSDavid Teigland 263b3b94faaSDavid Teigland static struct attribute *gfs2_attrs[] = { 264b3b94faaSDavid Teigland &gfs2_attr_id.attr, 265b3b94faaSDavid Teigland &gfs2_attr_fsname.attr, 26602e3cc70SSteven Whitehouse &gfs2_attr_uuid.attr, 267b3b94faaSDavid Teigland &gfs2_attr_freeze.attr, 268b3b94faaSDavid Teigland &gfs2_attr_withdraw.attr, 269b3b94faaSDavid Teigland &gfs2_attr_statfs_sync.attr, 270b3b94faaSDavid Teigland &gfs2_attr_quota_sync.attr, 271b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_user.attr, 272b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_group.attr, 27364d576baSSteven Whitehouse &gfs2_attr_demote_rq.attr, 274b3b94faaSDavid Teigland NULL, 275b3b94faaSDavid Teigland }; 276b3b94faaSDavid Teigland 2770d515210SBob Peterson static void gfs2_sbd_release(struct kobject *kobj) 2780d515210SBob Peterson { 2790d515210SBob Peterson struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 2800d515210SBob Peterson 2810d515210SBob Peterson kfree(sdp); 2820d515210SBob Peterson } 2830d515210SBob Peterson 284b3b94faaSDavid Teigland static struct kobj_type gfs2_ktype = { 2850d515210SBob Peterson .release = gfs2_sbd_release, 286b3b94faaSDavid Teigland .default_attrs = gfs2_attrs, 287b3b94faaSDavid Teigland .sysfs_ops = &gfs2_attr_ops, 288b3b94faaSDavid Teigland }; 289b3b94faaSDavid Teigland 290f057f6cdSSteven Whitehouse 291f057f6cdSSteven Whitehouse /* 292f057f6cdSSteven Whitehouse * lock_module. Originally from lock_dlm 293f057f6cdSSteven Whitehouse */ 294f057f6cdSSteven Whitehouse 295f057f6cdSSteven Whitehouse static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) 296f057f6cdSSteven Whitehouse { 297f057f6cdSSteven Whitehouse const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; 298f057f6cdSSteven Whitehouse return sprintf(buf, "%s\n", ops->lm_proto_name); 299f057f6cdSSteven Whitehouse } 300f057f6cdSSteven Whitehouse 301f057f6cdSSteven Whitehouse static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) 302f057f6cdSSteven Whitehouse { 303f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 304f057f6cdSSteven Whitehouse ssize_t ret; 305f057f6cdSSteven Whitehouse int val = 0; 306f057f6cdSSteven Whitehouse 307e0c2a9aaSDavid Teigland if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags)) 308f057f6cdSSteven Whitehouse val = 1; 309f057f6cdSSteven Whitehouse ret = sprintf(buf, "%d\n", val); 310f057f6cdSSteven Whitehouse return ret; 311f057f6cdSSteven Whitehouse } 312f057f6cdSSteven Whitehouse 313f057f6cdSSteven Whitehouse static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 314f057f6cdSSteven Whitehouse { 315f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 316f057f6cdSSteven Whitehouse ssize_t ret = len; 317f057f6cdSSteven Whitehouse int val; 318f057f6cdSSteven Whitehouse 319f057f6cdSSteven Whitehouse val = simple_strtol(buf, NULL, 0); 320f057f6cdSSteven Whitehouse 321f057f6cdSSteven Whitehouse if (val == 1) 322e0c2a9aaSDavid Teigland set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); 323f057f6cdSSteven Whitehouse else if (val == 0) { 324e0c2a9aaSDavid Teigland clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); 325f057f6cdSSteven Whitehouse smp_mb__after_clear_bit(); 326f057f6cdSSteven Whitehouse gfs2_glock_thaw(sdp); 327f057f6cdSSteven Whitehouse } else { 328f057f6cdSSteven Whitehouse ret = -EINVAL; 329f057f6cdSSteven Whitehouse } 330f057f6cdSSteven Whitehouse return ret; 331f057f6cdSSteven Whitehouse } 332f057f6cdSSteven Whitehouse 333*fd95e81cSSteven Whitehouse static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf) 334*fd95e81cSSteven Whitehouse { 335*fd95e81cSSteven Whitehouse int val = completion_done(&sdp->sd_wdack) ? 1 : 0; 336*fd95e81cSSteven Whitehouse 337*fd95e81cSSteven Whitehouse return sprintf(buf, "%d\n", val); 338*fd95e81cSSteven Whitehouse } 339*fd95e81cSSteven Whitehouse 340*fd95e81cSSteven Whitehouse static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 341*fd95e81cSSteven Whitehouse { 342*fd95e81cSSteven Whitehouse ssize_t ret = len; 343*fd95e81cSSteven Whitehouse int val; 344*fd95e81cSSteven Whitehouse 345*fd95e81cSSteven Whitehouse val = simple_strtol(buf, NULL, 0); 346*fd95e81cSSteven Whitehouse 347*fd95e81cSSteven Whitehouse if ((val == 1) && 348*fd95e81cSSteven Whitehouse !strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm")) 349*fd95e81cSSteven Whitehouse complete(&sdp->sd_wdack); 350*fd95e81cSSteven Whitehouse else 351*fd95e81cSSteven Whitehouse ret = -EINVAL; 352*fd95e81cSSteven Whitehouse return ret; 353*fd95e81cSSteven Whitehouse } 354*fd95e81cSSteven Whitehouse 355f057f6cdSSteven Whitehouse static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) 356f057f6cdSSteven Whitehouse { 357f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 358f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first); 359f057f6cdSSteven Whitehouse } 360f057f6cdSSteven Whitehouse 361ba6e9364SSteven Whitehouse static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 362ba6e9364SSteven Whitehouse { 363ba6e9364SSteven Whitehouse unsigned first; 364ba6e9364SSteven Whitehouse int rv; 365ba6e9364SSteven Whitehouse 366ba6e9364SSteven Whitehouse rv = sscanf(buf, "%u", &first); 367ba6e9364SSteven Whitehouse if (rv != 1 || first > 1) 368ba6e9364SSteven Whitehouse return -EINVAL; 3693942ae53SSteven Whitehouse rv = wait_for_completion_killable(&sdp->sd_locking_init); 3703942ae53SSteven Whitehouse if (rv) 3713942ae53SSteven Whitehouse return rv; 372ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 373ba6e9364SSteven Whitehouse rv = -EBUSY; 374ba6e9364SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 375ba6e9364SSteven Whitehouse goto out; 376ba6e9364SSteven Whitehouse rv = -EINVAL; 377ba6e9364SSteven Whitehouse if (sdp->sd_args.ar_spectator) 378ba6e9364SSteven Whitehouse goto out; 379ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 380ba6e9364SSteven Whitehouse goto out; 381ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_first = first; 382ba6e9364SSteven Whitehouse rv = 0; 383ba6e9364SSteven Whitehouse out: 384ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 385ba6e9364SSteven Whitehouse return rv ? rv : len; 386ba6e9364SSteven Whitehouse } 387ba6e9364SSteven Whitehouse 388f057f6cdSSteven Whitehouse static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) 389f057f6cdSSteven Whitehouse { 390f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 391e0c2a9aaSDavid Teigland return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags)); 392f057f6cdSSteven Whitehouse } 393f057f6cdSSteven Whitehouse 394e0c2a9aaSDavid Teigland int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid) 395f057f6cdSSteven Whitehouse { 396f057f6cdSSteven Whitehouse struct gfs2_jdesc *jd; 397fe64d517SSteven Whitehouse int rv; 398f057f6cdSSteven Whitehouse 399f057f6cdSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 400fe64d517SSteven Whitehouse rv = -EBUSY; 401fe64d517SSteven Whitehouse if (sdp->sd_jdesc->jd_jid == jid) 402fe64d517SSteven Whitehouse goto out; 403fe64d517SSteven Whitehouse rv = -ENOENT; 404f057f6cdSSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 405f057f6cdSSteven Whitehouse if (jd->jd_jid != jid) 406f057f6cdSSteven Whitehouse continue; 4076ecd7c2dSTejun Heo rv = gfs2_recover_journal(jd, false); 408f057f6cdSSteven Whitehouse break; 409f057f6cdSSteven Whitehouse } 410fe64d517SSteven Whitehouse out: 411f057f6cdSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 412e0c2a9aaSDavid Teigland return rv; 413e0c2a9aaSDavid Teigland } 414e0c2a9aaSDavid Teigland 415e0c2a9aaSDavid Teigland static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 416e0c2a9aaSDavid Teigland { 417e0c2a9aaSDavid Teigland unsigned jid; 418e0c2a9aaSDavid Teigland int rv; 419e0c2a9aaSDavid Teigland 420e0c2a9aaSDavid Teigland rv = sscanf(buf, "%u", &jid); 421e0c2a9aaSDavid Teigland if (rv != 1) 422e0c2a9aaSDavid Teigland return -EINVAL; 423e0c2a9aaSDavid Teigland 4241a058f52SDavid Teigland if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) { 4251a058f52SDavid Teigland rv = -ESHUTDOWN; 4261a058f52SDavid Teigland goto out; 4271a058f52SDavid Teigland } 428e0c2a9aaSDavid Teigland 4291a058f52SDavid Teigland rv = gfs2_recover_set(sdp, jid); 4301a058f52SDavid Teigland out: 431fe64d517SSteven Whitehouse return rv ? rv : len; 432f057f6cdSSteven Whitehouse } 433f057f6cdSSteven Whitehouse 434f057f6cdSSteven Whitehouse static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) 435f057f6cdSSteven Whitehouse { 436f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 437f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_done); 438f057f6cdSSteven Whitehouse } 439f057f6cdSSteven Whitehouse 440f057f6cdSSteven Whitehouse static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) 441f057f6cdSSteven Whitehouse { 442f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 443f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_status); 444f057f6cdSSteven Whitehouse } 445f057f6cdSSteven Whitehouse 446e1b28aabSSteven Whitehouse static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) 447e1b28aabSSteven Whitehouse { 448feb47ca9SSteven Whitehouse return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid); 449e1b28aabSSteven Whitehouse } 450e1b28aabSSteven Whitehouse 451ba6e9364SSteven Whitehouse static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 452ba6e9364SSteven Whitehouse { 453feb47ca9SSteven Whitehouse int jid; 454ba6e9364SSteven Whitehouse int rv; 455ba6e9364SSteven Whitehouse 456feb47ca9SSteven Whitehouse rv = sscanf(buf, "%d", &jid); 457ba6e9364SSteven Whitehouse if (rv != 1) 458ba6e9364SSteven Whitehouse return -EINVAL; 4593942ae53SSteven Whitehouse rv = wait_for_completion_killable(&sdp->sd_locking_init); 4603942ae53SSteven Whitehouse if (rv) 4613942ae53SSteven Whitehouse return rv; 462ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 463ba6e9364SSteven Whitehouse rv = -EINVAL; 464ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 465ba6e9364SSteven Whitehouse goto out; 466ba6e9364SSteven Whitehouse rv = -EBUSY; 467feb47ca9SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 468ba6e9364SSteven Whitehouse goto out; 469feb47ca9SSteven Whitehouse rv = 0; 470feb47ca9SSteven Whitehouse if (sdp->sd_args.ar_spectator && jid > 0) 471feb47ca9SSteven Whitehouse rv = jid = -EINVAL; 472ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_jid = jid; 473feb47ca9SSteven Whitehouse clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); 474ba6e9364SSteven Whitehouse smp_mb__after_clear_bit(); 475ba6e9364SSteven Whitehouse wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); 476ba6e9364SSteven Whitehouse out: 477ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 478ba6e9364SSteven Whitehouse return rv ? rv : len; 479ba6e9364SSteven Whitehouse } 480ba6e9364SSteven Whitehouse 481f057f6cdSSteven Whitehouse #define GDLM_ATTR(_name,_mode,_show,_store) \ 48248c2b613SSteven Whitehouse static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) 483f057f6cdSSteven Whitehouse 484f057f6cdSSteven Whitehouse GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); 485f057f6cdSSteven Whitehouse GDLM_ATTR(block, 0644, block_show, block_store); 486*fd95e81cSSteven Whitehouse GDLM_ATTR(withdraw, 0644, wdack_show, wdack_store); 487ba6e9364SSteven Whitehouse GDLM_ATTR(jid, 0644, jid_show, jid_store); 488ba6e9364SSteven Whitehouse GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store); 489f057f6cdSSteven Whitehouse GDLM_ATTR(first_done, 0444, first_done_show, NULL); 490d7e623daSSteven Whitehouse GDLM_ATTR(recover, 0600, NULL, recover_store); 491f057f6cdSSteven Whitehouse GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); 492f057f6cdSSteven Whitehouse GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); 493f057f6cdSSteven Whitehouse 494f057f6cdSSteven Whitehouse static struct attribute *lock_module_attrs[] = { 495f057f6cdSSteven Whitehouse &gdlm_attr_proto_name.attr, 496f057f6cdSSteven Whitehouse &gdlm_attr_block.attr, 497f057f6cdSSteven Whitehouse &gdlm_attr_withdraw.attr, 498e1b28aabSSteven Whitehouse &gdlm_attr_jid.attr, 499f057f6cdSSteven Whitehouse &gdlm_attr_first.attr, 500f057f6cdSSteven Whitehouse &gdlm_attr_first_done.attr, 501f057f6cdSSteven Whitehouse &gdlm_attr_recover.attr, 502f057f6cdSSteven Whitehouse &gdlm_attr_recover_done.attr, 503f057f6cdSSteven Whitehouse &gdlm_attr_recover_status.attr, 504ea67eedbSSteven Whitehouse NULL, 505b3b94faaSDavid Teigland }; 506b3b94faaSDavid Teigland 507b3b94faaSDavid Teigland /* 508b3b94faaSDavid Teigland * get and set struct gfs2_tune fields 509b3b94faaSDavid Teigland */ 510b3b94faaSDavid Teigland 511b3b94faaSDavid Teigland static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) 512b3b94faaSDavid Teigland { 5133204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u %u\n", 5143204a6c0SDavid Teigland sdp->sd_tune.gt_quota_scale_num, 515b3b94faaSDavid Teigland sdp->sd_tune.gt_quota_scale_den); 516b3b94faaSDavid Teigland } 517b3b94faaSDavid Teigland 518b3b94faaSDavid Teigland static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, 519b3b94faaSDavid Teigland size_t len) 520b3b94faaSDavid Teigland { 521b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 522b3b94faaSDavid Teigland unsigned int x, y; 523b3b94faaSDavid Teigland 524b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 525b3b94faaSDavid Teigland return -EACCES; 526b3b94faaSDavid Teigland 527b3b94faaSDavid Teigland if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) 528b3b94faaSDavid Teigland return -EINVAL; 529b3b94faaSDavid Teigland 530b3b94faaSDavid Teigland spin_lock(>->gt_spin); 531b3b94faaSDavid Teigland gt->gt_quota_scale_num = x; 532b3b94faaSDavid Teigland gt->gt_quota_scale_den = y; 533b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 534b3b94faaSDavid Teigland return len; 535b3b94faaSDavid Teigland } 536b3b94faaSDavid Teigland 537b3b94faaSDavid Teigland static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, 538b3b94faaSDavid Teigland int check_zero, const char *buf, size_t len) 539b3b94faaSDavid Teigland { 540b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 541b3b94faaSDavid Teigland unsigned int x; 542b3b94faaSDavid Teigland 543b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 544b3b94faaSDavid Teigland return -EACCES; 545b3b94faaSDavid Teigland 546b3b94faaSDavid Teigland x = simple_strtoul(buf, NULL, 0); 547b3b94faaSDavid Teigland 548b3b94faaSDavid Teigland if (check_zero && !x) 549b3b94faaSDavid Teigland return -EINVAL; 550b3b94faaSDavid Teigland 551b3b94faaSDavid Teigland spin_lock(>->gt_spin); 552b3b94faaSDavid Teigland *field = x; 553b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 554b3b94faaSDavid Teigland return len; 555b3b94faaSDavid Teigland } 556b3b94faaSDavid Teigland 557b3b94faaSDavid Teigland #define TUNE_ATTR_3(name, show, store) \ 55848c2b613SSteven Whitehouse static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) 559b3b94faaSDavid Teigland 560b3b94faaSDavid Teigland #define TUNE_ATTR_2(name, store) \ 561b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 562b3b94faaSDavid Teigland { \ 5633204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ 564b3b94faaSDavid Teigland } \ 565b3b94faaSDavid Teigland TUNE_ATTR_3(name, name##_show, store) 566b3b94faaSDavid Teigland 567b3b94faaSDavid Teigland #define TUNE_ATTR(name, check_zero) \ 568b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ 569b3b94faaSDavid Teigland { \ 570b3b94faaSDavid Teigland return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ 571b3b94faaSDavid Teigland } \ 572b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store) 573b3b94faaSDavid Teigland 574b3b94faaSDavid Teigland TUNE_ATTR(quota_warn_period, 0); 575b3b94faaSDavid Teigland TUNE_ATTR(quota_quantum, 0); 576b3b94faaSDavid Teigland TUNE_ATTR(max_readahead, 0); 577b3b94faaSDavid Teigland TUNE_ATTR(complain_secs, 0); 578b3b94faaSDavid Teigland TUNE_ATTR(statfs_slow, 0); 579b3b94faaSDavid Teigland TUNE_ATTR(new_files_jdata, 0); 580b3b94faaSDavid Teigland TUNE_ATTR(quota_simul_sync, 1); 581b3b94faaSDavid Teigland TUNE_ATTR(statfs_quantum, 1); 582b3b94faaSDavid Teigland TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); 583b3b94faaSDavid Teigland 584b3b94faaSDavid Teigland static struct attribute *tune_attrs[] = { 585b3b94faaSDavid Teigland &tune_attr_quota_warn_period.attr, 586b3b94faaSDavid Teigland &tune_attr_quota_quantum.attr, 587b3b94faaSDavid Teigland &tune_attr_max_readahead.attr, 588b3b94faaSDavid Teigland &tune_attr_complain_secs.attr, 589b3b94faaSDavid Teigland &tune_attr_statfs_slow.attr, 590b3b94faaSDavid Teigland &tune_attr_quota_simul_sync.attr, 591b3b94faaSDavid Teigland &tune_attr_statfs_quantum.attr, 592b3b94faaSDavid Teigland &tune_attr_quota_scale.attr, 593b3b94faaSDavid Teigland &tune_attr_new_files_jdata.attr, 594ea67eedbSSteven Whitehouse NULL, 595b3b94faaSDavid Teigland }; 596b3b94faaSDavid Teigland 597b3b94faaSDavid Teigland static struct attribute_group tune_group = { 598b3b94faaSDavid Teigland .name = "tune", 599ea67eedbSSteven Whitehouse .attrs = tune_attrs, 600b3b94faaSDavid Teigland }; 601b3b94faaSDavid Teigland 602f057f6cdSSteven Whitehouse static struct attribute_group lock_module_group = { 603f057f6cdSSteven Whitehouse .name = "lock_module", 604f057f6cdSSteven Whitehouse .attrs = lock_module_attrs, 605f057f6cdSSteven Whitehouse }; 606f057f6cdSSteven Whitehouse 607b3b94faaSDavid Teigland int gfs2_sys_fs_add(struct gfs2_sbd *sdp) 608b3b94faaSDavid Teigland { 609440d6da2SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 610b3b94faaSDavid Teigland int error; 611440d6da2SSteven Whitehouse char ro[20]; 612440d6da2SSteven Whitehouse char spectator[20]; 613440d6da2SSteven Whitehouse char *envp[] = { ro, spectator, NULL }; 6140d515210SBob Peterson int sysfs_frees_sdp = 0; 615440d6da2SSteven Whitehouse 616440d6da2SSteven Whitehouse sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); 617440d6da2SSteven Whitehouse sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); 618b3b94faaSDavid Teigland 6199bec101aSGreg Kroah-Hartman sdp->sd_kobj.kset = gfs2_kset; 620901195edSGreg Kroah-Hartman error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, 621901195edSGreg Kroah-Hartman "%s", sdp->sd_table_name); 622b3b94faaSDavid Teigland if (error) 6230d515210SBob Peterson goto fail_reg; 624b3b94faaSDavid Teigland 6250d515210SBob Peterson sysfs_frees_sdp = 1; /* Freeing sdp is now done by sysfs calling 6260d515210SBob Peterson function gfs2_sbd_release. */ 627b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &tune_group); 628b3b94faaSDavid Teigland if (error) 629f6eb5349SSteven Whitehouse goto fail_reg; 630b3b94faaSDavid Teigland 631f057f6cdSSteven Whitehouse error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); 632f057f6cdSSteven Whitehouse if (error) 633f057f6cdSSteven Whitehouse goto fail_tune; 634f057f6cdSSteven Whitehouse 63531e54b01SSteven Whitehouse error = sysfs_create_link(&sdp->sd_kobj, 63631e54b01SSteven Whitehouse &disk_to_dev(sb->s_bdev->bd_disk)->kobj, 63731e54b01SSteven Whitehouse "device"); 63831e54b01SSteven Whitehouse if (error) 63931e54b01SSteven Whitehouse goto fail_lock_module; 64031e54b01SSteven Whitehouse 641440d6da2SSteven Whitehouse kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); 642b3b94faaSDavid Teigland return 0; 643b3b94faaSDavid Teigland 64431e54b01SSteven Whitehouse fail_lock_module: 64531e54b01SSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 646f057f6cdSSteven Whitehouse fail_tune: 647f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &tune_group); 648b3b94faaSDavid Teigland fail_reg: 6490d515210SBob Peterson free_percpu(sdp->sd_lkstats); 65065952fb4SDavid Teigland fs_err(sdp, "error %d adding sysfs files", error); 6510d515210SBob Peterson if (sysfs_frees_sdp) 6520d515210SBob Peterson kobject_put(&sdp->sd_kobj); 6530d515210SBob Peterson else 6540d515210SBob Peterson kfree(sdp); 6550d515210SBob Peterson sb->s_fs_info = NULL; 656b3b94faaSDavid Teigland return error; 657b3b94faaSDavid Teigland } 658b3b94faaSDavid Teigland 659b3b94faaSDavid Teigland void gfs2_sys_fs_del(struct gfs2_sbd *sdp) 660b3b94faaSDavid Teigland { 66131e54b01SSteven Whitehouse sysfs_remove_link(&sdp->sd_kobj, "device"); 662b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &tune_group); 663f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 664197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 665b3b94faaSDavid Teigland } 666b3b94faaSDavid Teigland 667fdd1062eSSteven Whitehouse static int gfs2_uevent(struct kset *kset, struct kobject *kobj, 668fdd1062eSSteven Whitehouse struct kobj_uevent_env *env) 669fdd1062eSSteven Whitehouse { 670fdd1062eSSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 67132e471efSSteven Whitehouse struct super_block *s = sdp->sd_vfs; 67232e471efSSteven Whitehouse const u8 *uuid = s->s_uuid; 67302e3cc70SSteven Whitehouse 674fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); 675fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); 676ba6e9364SSteven Whitehouse if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags)) 677feb47ca9SSteven Whitehouse add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid); 678f0b34ae6SJoe Perches if (gfs2_uuid_valid(uuid)) 679f0b34ae6SJoe Perches add_uevent_var(env, "UUID=%pUB", uuid); 680fdd1062eSSteven Whitehouse return 0; 681fdd1062eSSteven Whitehouse } 682fdd1062eSSteven Whitehouse 6839cd43611SEmese Revfy static const struct kset_uevent_ops gfs2_uevent_ops = { 684fdd1062eSSteven Whitehouse .uevent = gfs2_uevent, 685fdd1062eSSteven Whitehouse }; 686fdd1062eSSteven Whitehouse 687b3b94faaSDavid Teigland int gfs2_sys_init(void) 688b3b94faaSDavid Teigland { 689fdd1062eSSteven Whitehouse gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); 6909bec101aSGreg Kroah-Hartman if (!gfs2_kset) 6919bec101aSGreg Kroah-Hartman return -ENOMEM; 6929bec101aSGreg Kroah-Hartman return 0; 693b3b94faaSDavid Teigland } 694b3b94faaSDavid Teigland 695b3b94faaSDavid Teigland void gfs2_sys_uninit(void) 696b3b94faaSDavid Teigland { 6979bec101aSGreg Kroah-Hartman kset_unregister(gfs2_kset); 698b3b94faaSDavid Teigland } 699b3b94faaSDavid Teigland 700