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path: root/fs/gfs2/ops_fstype.c
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Diffstat (limited to 'fs/gfs2/ops_fstype.c')
-rw-r--r--fs/gfs2/ops_fstype.c68
1 files changed, 46 insertions, 22 deletions
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index b8c250fc4922..0262c190b6f9 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -19,6 +19,8 @@
#include <linux/mount.h>
#include <linux/gfs2_ondisk.h>
#include <linux/quotaops.h>
+#include <linux/lockdep.h>
+#include <linux/module.h>
#include "gfs2.h"
#include "incore.h"
@@ -80,6 +82,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
init_waitqueue_head(&sdp->sd_glock_wait);
atomic_set(&sdp->sd_glock_disposal, 0);
init_completion(&sdp->sd_locking_init);
+ init_completion(&sdp->sd_wdack);
spin_lock_init(&sdp->sd_statfs_spin);
spin_lock_init(&sdp->sd_rindex_spin);
@@ -101,6 +104,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
INIT_LIST_HEAD(&sdp->sd_log_le_revoke);
INIT_LIST_HEAD(&sdp->sd_log_le_databuf);
INIT_LIST_HEAD(&sdp->sd_log_le_ordered);
+ spin_lock_init(&sdp->sd_ordered_lock);
init_waitqueue_head(&sdp->sd_log_waitq);
init_waitqueue_head(&sdp->sd_logd_waitq);
@@ -114,8 +118,6 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
INIT_LIST_HEAD(&sdp->sd_revoke_list);
- mutex_init(&sdp->sd_freeze_lock);
-
return sdp;
}
@@ -277,6 +279,9 @@ static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent)
sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize -
sizeof(struct gfs2_meta_header)) /
sizeof(struct gfs2_quota_change);
+ sdp->sd_blocks_per_bitmap = (sdp->sd_sb.sb_bsize -
+ sizeof(struct gfs2_meta_header))
+ * GFS2_NBBY; /* not the rgrp bitmap, subsequent bitmaps only */
/* Compute maximum reservation required to add a entry to a directory */
@@ -766,6 +771,7 @@ fail:
return error;
}
+static struct lock_class_key gfs2_quota_imutex_key;
static int init_inodes(struct gfs2_sbd *sdp, int undo)
{
@@ -803,6 +809,12 @@ static int init_inodes(struct gfs2_sbd *sdp, int undo)
fs_err(sdp, "can't get quota file inode: %d\n", error);
goto fail_rindex;
}
+ /*
+ * i_mutex on quota files is special. Since this inode is hidden system
+ * file, we are safe to define locking ourselves.
+ */
+ lockdep_set_class(&sdp->sd_quota_inode->i_mutex,
+ &gfs2_quota_imutex_key);
error = gfs2_rindex_update(sdp);
if (error)
@@ -904,16 +916,16 @@ static int init_threads(struct gfs2_sbd *sdp, int undo)
goto fail_quotad;
p = kthread_run(gfs2_logd, sdp, "gfs2_logd");
- error = IS_ERR(p);
- if (error) {
+ if (IS_ERR(p)) {
+ error = PTR_ERR(p);
fs_err(sdp, "can't start logd thread: %d\n", error);
return error;
}
sdp->sd_logd_process = p;
p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad");
- error = IS_ERR(p);
- if (error) {
+ if (IS_ERR(p)) {
+ error = PTR_ERR(p);
fs_err(sdp, "can't start quotad thread: %d\n", error);
goto fail;
}
@@ -1118,20 +1130,33 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent
}
error = init_names(sdp, silent);
- if (error)
- goto fail;
+ if (error) {
+ /* In this case, we haven't initialized sysfs, so we have to
+ manually free the sdp. */
+ free_percpu(sdp->sd_lkstats);
+ kfree(sdp);
+ sb->s_fs_info = NULL;
+ return error;
+ }
snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s", sdp->sd_table_name);
- gfs2_create_debugfs_file(sdp);
-
error = gfs2_sys_fs_add(sdp);
+ /*
+ * If we hit an error here, gfs2_sys_fs_add will have called function
+ * kobject_put which causes the sysfs usage count to go to zero, which
+ * causes sysfs to call function gfs2_sbd_release, which frees sdp.
+ * Subsequent error paths here will call gfs2_sys_fs_del, which also
+ * kobject_put to free sdp.
+ */
if (error)
- goto fail;
+ return error;
+
+ gfs2_create_debugfs_file(sdp);
error = gfs2_lm_mount(sdp, silent);
if (error)
- goto fail_sys;
+ goto fail_debug;
error = init_locking(sdp, &mount_gh, DO);
if (error)
@@ -1215,12 +1240,12 @@ fail_locking:
fail_lm:
gfs2_gl_hash_clear(sdp);
gfs2_lm_unmount(sdp);
-fail_sys:
- gfs2_sys_fs_del(sdp);
-fail:
+fail_debug:
gfs2_delete_debugfs_file(sdp);
free_percpu(sdp->sd_lkstats);
- kfree(sdp);
+ /* gfs2_sys_fs_del must be the last thing we do, since it causes
+ * sysfs to call function gfs2_sbd_release, which frees sdp. */
+ gfs2_sys_fs_del(sdp);
sb->s_fs_info = NULL;
return error;
}
@@ -1286,7 +1311,7 @@ static struct dentry *gfs2_mount(struct file_system_type *fs_type, int flags,
error = -EBUSY;
goto error_bdev;
}
- s = sget(fs_type, test_gfs2_super, set_gfs2_super, bdev);
+ s = sget(fs_type, test_gfs2_super, set_gfs2_super, flags, bdev);
mutex_unlock(&bdev->bd_fsfreeze_mutex);
error = PTR_ERR(s);
if (IS_ERR(s))
@@ -1316,7 +1341,6 @@ static struct dentry *gfs2_mount(struct file_system_type *fs_type, int flags,
} 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));
@@ -1360,7 +1384,7 @@ static struct dentry *gfs2_mount_meta(struct file_system_type *fs_type,
dev_name, error);
return ERR_PTR(error);
}
- s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super,
+ s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super, flags,
path.dentry->d_inode->i_sb->s_bdev);
path_put(&path);
if (IS_ERR(s)) {
@@ -1390,10 +1414,9 @@ static void gfs2_kill_sb(struct super_block *sb)
sdp->sd_root_dir = NULL;
sdp->sd_master_dir = NULL;
shrink_dcache_sb(sb);
- kill_block_super(sb);
gfs2_delete_debugfs_file(sdp);
free_percpu(sdp->sd_lkstats);
- kfree(sdp);
+ kill_block_super(sb);
}
struct file_system_type gfs2_fs_type = {
@@ -1403,6 +1426,7 @@ struct file_system_type gfs2_fs_type = {
.kill_sb = gfs2_kill_sb,
.owner = THIS_MODULE,
};
+MODULE_ALIAS_FS("gfs2");
struct file_system_type gfs2meta_fs_type = {
.name = "gfs2meta",
@@ -1410,4 +1434,4 @@ struct file_system_type gfs2meta_fs_type = {
.mount = gfs2_mount_meta,
.owner = THIS_MODULE,
};
-
+MODULE_ALIAS_FS("gfs2meta");
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-17 13:24:47 +0000