#include <linux/mount.h>
#include <linux/gfs2_ondisk.h>
#include <linux/slow-work.h>
+#include <linux/quotaops.h>
#include "gfs2.h"
#include "incore.h"
{
spin_lock_init(>->gt_spin);
- gt->gt_incore_log_blocks = 1024;
- gt->gt_logd_secs = 1;
gt->gt_quota_simul_sync = 64;
gt->gt_quota_warn_period = 10;
gt->gt_quota_scale_num = 1;
gt->gt_quota_scale_den = 1;
- gt->gt_quota_quantum = 60;
gt->gt_new_files_jdata = 0;
gt->gt_max_readahead = 1 << 18;
- gt->gt_stall_secs = 600;
gt->gt_complain_secs = 10;
- gt->gt_statfs_quantum = 30;
- gt->gt_statfs_slow = 0;
}
static struct gfs2_sbd *init_sbd(struct super_block *sb)
gfs2_tune_init(&sdp->sd_tune);
+ init_waitqueue_head(&sdp->sd_glock_wait);
+ atomic_set(&sdp->sd_glock_disposal, 0);
spin_lock_init(&sdp->sd_statfs_spin);
spin_lock_init(&sdp->sd_rindex_spin);
spin_lock_init(&sdp->sd_trunc_lock);
spin_lock_init(&sdp->sd_log_lock);
-
+ atomic_set(&sdp->sd_log_pinned, 0);
INIT_LIST_HEAD(&sdp->sd_log_le_buf);
INIT_LIST_HEAD(&sdp->sd_log_le_revoke);
INIT_LIST_HEAD(&sdp->sd_log_le_rg);
INIT_LIST_HEAD(&sdp->sd_log_le_databuf);
INIT_LIST_HEAD(&sdp->sd_log_le_ordered);
- mutex_init(&sdp->sd_log_reserve_mutex);
+ init_waitqueue_head(&sdp->sd_log_waitq);
+ init_waitqueue_head(&sdp->sd_logd_waitq);
INIT_LIST_HEAD(&sdp->sd_ail1_list);
INIT_LIST_HEAD(&sdp->sd_ail2_list);
struct dentry *dentry;
struct inode *inode;
- inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, 0);
+ inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0);
if (IS_ERR(inode)) {
fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode));
return PTR_ERR(inode);
goto fail;
}
- error = -EINVAL;
+ error = -EUSERS;
if (!gfs2_jindex_size(sdp)) {
fs_err(sdp, "no journals!\n");
goto fail_jindex;
if (sdp->sd_args.ar_spectator) {
sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0);
atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks);
+ atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5);
+ atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5);
} else {
if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) {
fs_err(sdp, "can't mount journal #%u\n",
goto fail_jinode_gh;
}
atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks);
+ atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5);
+ atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5);
/* Map the extents for this journal's blocks */
map_journal_extents(sdp);
if (undo)
goto fail_quotad;
- sdp->sd_log_flush_time = jiffies;
-
p = kthread_run(gfs2_logd, sdp, "gfs2_logd");
error = IS_ERR(p);
if (error) {
{ Opt_err, NULL },
};
+static void nolock_put_lock(struct kmem_cache *cachep, struct gfs2_glock *gl)
+{
+ struct gfs2_sbd *sdp = gl->gl_sbd;
+ kmem_cache_free(cachep, gl);
+ if (atomic_dec_and_test(&sdp->sd_glock_disposal))
+ wake_up(&sdp->sd_glock_wait);
+}
+
static const struct lm_lockops nolock_ops = {
.lm_proto_name = "lock_nolock",
- .lm_put_lock = kmem_cache_free,
+ .lm_put_lock = nolock_put_lock,
.lm_tokens = &nolock_tokens,
};
/**
* gfs2_lm_mount - mount a locking protocol
* @sdp: the filesystem
- * @args: mount arguements
+ * @args: mount arguments
* @silent: if 1, don't complain if the FS isn't a GFS2 fs
*
* Returns: errno
ls->ls_ops = lm;
ls->ls_first = 1;
- ls->ls_id = 0;
for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) {
substring_t tmp[MAX_OPT_ARGS];
ls->ls_jid = option;
break;
case Opt_id:
- ret = match_int(&tmp[0], &option);
- if (ret)
- goto hostdata_error;
- ls->ls_id = option;
+ /* Obsolete, but left for backward compat purposes */
break;
case Opt_first:
ret = match_int(&tmp[0], &option);
* Returns: errno
*/
-static int fill_super(struct super_block *sb, void *data, int silent)
+static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent)
{
struct gfs2_sbd *sdp;
struct gfs2_holder mount_gh;
printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n");
return -ENOMEM;
}
-
- sdp->sd_args.ar_quota = GFS2_QUOTA_DEFAULT;
- sdp->sd_args.ar_data = GFS2_DATA_DEFAULT;
- sdp->sd_args.ar_commit = 60;
- sdp->sd_args.ar_errors = GFS2_ERRORS_DEFAULT;
-
- error = gfs2_mount_args(sdp, &sdp->sd_args, data);
- if (error) {
- printk(KERN_WARNING "GFS2: can't parse mount arguments\n");
- goto fail;
- }
+ sdp->sd_args = *args;
if (sdp->sd_args.ar_spectator) {
sb->s_flags |= MS_RDONLY;
}
if (sdp->sd_args.ar_posix_acl)
sb->s_flags |= MS_POSIXACL;
+ if (sdp->sd_args.ar_nobarrier)
+ set_bit(SDF_NOBARRIERS, &sdp->sd_flags);
sb->s_magic = GFS2_MAGIC;
sb->s_op = &gfs2_super_ops;
sb->s_export_op = &gfs2_export_ops;
sb->s_xattr = gfs2_xattr_handlers;
+ sb->s_qcop = &gfs2_quotactl_ops;
+ sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
sb->s_time_gran = 1;
sb->s_maxbytes = MAX_LFS_FILESIZE;
GFS2_BASIC_BLOCK_SHIFT;
sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift;
- sdp->sd_tune.gt_log_flush_secs = sdp->sd_args.ar_commit;
+ sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit;
+ sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum;
+ if (sdp->sd_args.ar_statfs_quantum) {
+ sdp->sd_tune.gt_statfs_slow = 0;
+ sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum;
+ }
+ else {
+ sdp->sd_tune.gt_statfs_slow = 1;
+ sdp->sd_tune.gt_statfs_quantum = 30;
+ }
error = init_names(sdp, silent);
if (error)
fail_locking:
init_locking(sdp, &mount_gh, UNDO);
fail_lm:
+ invalidate_inodes(sb);
gfs2_gl_hash_clear(sdp);
gfs2_lm_unmount(sdp);
- while (invalidate_inodes(sb))
- yield();
fail_sys:
gfs2_sys_fs_del(sdp);
fail:
return error;
}
-static int gfs2_get_sb(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *data, struct vfsmount *mnt)
+static int set_gfs2_super(struct super_block *s, void *data)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt);
+ s->s_bdev = data;
+ s->s_dev = s->s_bdev->bd_dev;
+
+ /*
+ * We set the bdi here to the queue backing, file systems can
+ * overwrite this in ->fill_super()
+ */
+ s->s_bdi = &bdev_get_queue(s->s_bdev)->backing_dev_info;
+ return 0;
}
-static int test_meta_super(struct super_block *s, void *ptr)
+static int test_gfs2_super(struct super_block *s, void *ptr)
{
struct block_device *bdev = ptr;
return (bdev == s->s_bdev);
}
+/**
+ * gfs2_get_sb - Get the GFS2 superblock
+ * @fs_type: The GFS2 filesystem type
+ * @flags: Mount flags
+ * @dev_name: The name of the device
+ * @data: The mount arguments
+ * @mnt: The vfsmnt for this mount
+ *
+ * Q. Why not use get_sb_bdev() ?
+ * A. We need to select one of two root directories to mount, independent
+ * of whether this is the initial, or subsequent, mount of this sb
+ *
+ * Returns: 0 or -ve on error
+ */
+
+static int gfs2_get_sb(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data, struct vfsmount *mnt)
+{
+ struct block_device *bdev;
+ struct super_block *s;
+ fmode_t mode = FMODE_READ;
+ int error;
+ struct gfs2_args args;
+ struct gfs2_sbd *sdp;
+
+ if (!(flags & MS_RDONLY))
+ mode |= FMODE_WRITE;
+
+ bdev = open_bdev_exclusive(dev_name, mode, fs_type);
+ if (IS_ERR(bdev))
+ return PTR_ERR(bdev);
+
+ /*
+ * once the super is inserted into the list by sget, s_umount
+ * will protect the lockfs code from trying to start a snapshot
+ * while we are mounting
+ */
+ mutex_lock(&bdev->bd_fsfreeze_mutex);
+ if (bdev->bd_fsfreeze_count > 0) {
+ mutex_unlock(&bdev->bd_fsfreeze_mutex);
+ error = -EBUSY;
+ goto error_bdev;
+ }
+ s = sget(fs_type, test_gfs2_super, set_gfs2_super, bdev);
+ mutex_unlock(&bdev->bd_fsfreeze_mutex);
+ error = PTR_ERR(s);
+ if (IS_ERR(s))
+ goto error_bdev;
+
+ memset(&args, 0, sizeof(args));
+ args.ar_quota = GFS2_QUOTA_DEFAULT;
+ args.ar_data = GFS2_DATA_DEFAULT;
+ args.ar_commit = 30;
+ args.ar_statfs_quantum = 30;
+ args.ar_quota_quantum = 60;
+ args.ar_errors = GFS2_ERRORS_DEFAULT;
+
+ error = gfs2_mount_args(&args, data);
+ if (error) {
+ printk(KERN_WARNING "GFS2: can't parse mount arguments\n");
+ if (s->s_root)
+ goto error_super;
+ deactivate_locked_super(s);
+ return error;
+ }
+
+ if (s->s_root) {
+ error = -EBUSY;
+ if ((flags ^ s->s_flags) & MS_RDONLY)
+ goto error_super;
+ close_bdev_exclusive(bdev, mode);
+ } else {
+ char b[BDEVNAME_SIZE];
+
+ s->s_flags = flags;
+ s->s_mode = mode;
+ strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id));
+ sb_set_blocksize(s, block_size(bdev));
+ error = fill_super(s, &args, flags & MS_SILENT ? 1 : 0);
+ if (error) {
+ deactivate_locked_super(s);
+ return error;
+ }
+ s->s_flags |= MS_ACTIVE;
+ bdev->bd_super = s;
+ }
+
+ sdp = s->s_fs_info;
+ mnt->mnt_sb = s;
+ if (args.ar_meta)
+ mnt->mnt_root = dget(sdp->sd_master_dir);
+ else
+ mnt->mnt_root = dget(sdp->sd_root_dir);
+ return 0;
+
+error_super:
+ deactivate_locked_super(s);
+error_bdev:
+ close_bdev_exclusive(bdev, mode);
+ return error;
+}
+
static int set_meta_super(struct super_block *s, void *ptr)
{
return -EINVAL;
dev_name, error);
return error;
}
- s = sget(&gfs2_fs_type, test_meta_super, set_meta_super,
+ s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super,
path.dentry->d_inode->i_sb->s_bdev);
path_put(&path);
if (IS_ERR(s)) {
printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n");
return PTR_ERR(s);
}
+ if ((flags ^ s->s_flags) & MS_RDONLY) {
+ deactivate_locked_super(s);
+ return -EBUSY;
+ }
sdp = s->s_fs_info;
mnt->mnt_sb = s;
mnt->mnt_root = dget(sdp->sd_master_dir);