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Diffstat (limited to 'fs/efs/super.c')
-rw-r--r--fs/efs/super.c101
1 files changed, 51 insertions, 50 deletions
diff --git a/fs/efs/super.c b/fs/efs/super.c
index 5073a07652c..7fca462ea4e 100644
--- a/fs/efs/super.c
+++ b/fs/efs/super.c
@@ -26,13 +26,21 @@ static struct dentry *efs_mount(struct file_system_type *fs_type,
return mount_bdev(fs_type, flags, dev_name, data, efs_fill_super);
}
+static void efs_kill_sb(struct super_block *s)
+{
+ struct efs_sb_info *sbi = SUPER_INFO(s);
+ kill_block_super(s);
+ kfree(sbi);
+}
+
static struct file_system_type efs_fs_type = {
.owner = THIS_MODULE,
.name = "efs",
.mount = efs_mount,
- .kill_sb = kill_block_super,
+ .kill_sb = efs_kill_sb,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("efs");
static struct pt_types sgi_pt_types[] = {
{0x00, "SGI vh"},
@@ -65,11 +73,17 @@ static struct inode *efs_alloc_inode(struct super_block *sb)
return &ei->vfs_inode;
}
-static void efs_destroy_inode(struct inode *inode)
+static void efs_i_callback(struct rcu_head *head)
{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
kmem_cache_free(efs_inode_cachep, INODE_INFO(inode));
}
+static void efs_destroy_inode(struct inode *inode)
+{
+ call_rcu(&inode->i_rcu, efs_i_callback);
+}
+
static void init_once(void *foo)
{
struct efs_inode_info *ei = (struct efs_inode_info *) foo;
@@ -77,7 +91,7 @@ static void init_once(void *foo)
inode_init_once(&ei->vfs_inode);
}
-static int init_inodecache(void)
+static int __init init_inodecache(void)
{
efs_inode_cachep = kmem_cache_create("efs_inode_cache",
sizeof(struct efs_inode_info),
@@ -90,17 +104,17 @@ static int init_inodecache(void)
static void destroy_inodecache(void)
{
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * destroy cache.
+ */
+ rcu_barrier();
kmem_cache_destroy(efs_inode_cachep);
}
-static void efs_put_super(struct super_block *s)
-{
- kfree(s->s_fs_info);
- s->s_fs_info = NULL;
-}
-
static int efs_remount(struct super_block *sb, int *flags, char *data)
{
+ sync_filesystem(sb);
*flags |= MS_RDONLY;
return 0;
}
@@ -108,7 +122,6 @@ static int efs_remount(struct super_block *sb, int *flags, char *data)
static const struct super_operations efs_superblock_operations = {
.alloc_inode = efs_alloc_inode,
.destroy_inode = efs_destroy_inode,
- .put_super = efs_put_super,
.statfs = efs_statfs,
.remount_fs = efs_remount,
};
@@ -121,7 +134,7 @@ static const struct export_operations efs_export_ops = {
static int __init init_efs_fs(void) {
int err;
- printk("EFS: "EFS_VERSION" - http://aeschi.ch.eu.org/efs/\n");
+ pr_info(EFS_VERSION" - http://aeschi.ch.eu.org/efs/\n");
err = init_inodecache();
if (err)
goto out1;
@@ -166,12 +179,12 @@ static efs_block_t efs_validate_vh(struct volume_header *vh) {
csum += be32_to_cpu(cs);
}
if (csum) {
- printk(KERN_INFO "EFS: SGI disklabel: checksum bad, label corrupted\n");
+ pr_warn("SGI disklabel: checksum bad, label corrupted\n");
return 0;
}
#ifdef DEBUG
- printk(KERN_DEBUG "EFS: bf: \"%16s\"\n", vh->vh_bootfile);
+ pr_debug("bf: \"%16s\"\n", vh->vh_bootfile);
for(i = 0; i < NVDIR; i++) {
int j;
@@ -183,9 +196,8 @@ static efs_block_t efs_validate_vh(struct volume_header *vh) {
name[j] = (char) 0;
if (name[0]) {
- printk(KERN_DEBUG "EFS: vh: %8s block: 0x%08x size: 0x%08x\n",
- name,
- (int) be32_to_cpu(vh->vh_vd[i].vd_lbn),
+ pr_debug("vh: %8s block: 0x%08x size: 0x%08x\n",
+ name, (int) be32_to_cpu(vh->vh_vd[i].vd_lbn),
(int) be32_to_cpu(vh->vh_vd[i].vd_nbytes));
}
}
@@ -198,12 +210,11 @@ static efs_block_t efs_validate_vh(struct volume_header *vh) {
}
#ifdef DEBUG
if (be32_to_cpu(vh->vh_pt[i].pt_nblks)) {
- printk(KERN_DEBUG "EFS: pt %2d: start: %08d size: %08d type: 0x%02x (%s)\n",
- i,
- (int) be32_to_cpu(vh->vh_pt[i].pt_firstlbn),
- (int) be32_to_cpu(vh->vh_pt[i].pt_nblks),
- pt_type,
- (pt_entry->pt_name) ? pt_entry->pt_name : "unknown");
+ pr_debug("pt %2d: start: %08d size: %08d type: 0x%02x (%s)\n",
+ i, (int)be32_to_cpu(vh->vh_pt[i].pt_firstlbn),
+ (int)be32_to_cpu(vh->vh_pt[i].pt_nblks),
+ pt_type, (pt_entry->pt_name) ?
+ pt_entry->pt_name : "unknown");
}
#endif
if (IS_EFS(pt_type)) {
@@ -213,11 +224,10 @@ static efs_block_t efs_validate_vh(struct volume_header *vh) {
}
if (slice == -1) {
- printk(KERN_NOTICE "EFS: partition table contained no EFS partitions\n");
+ pr_notice("partition table contained no EFS partitions\n");
#ifdef DEBUG
} else {
- printk(KERN_INFO "EFS: using slice %d (type %s, offset 0x%x)\n",
- slice,
+ pr_info("using slice %d (type %s, offset 0x%x)\n", slice,
(pt_entry->pt_name) ? pt_entry->pt_name : "unknown",
sblock);
#endif
@@ -247,7 +257,6 @@ static int efs_fill_super(struct super_block *s, void *d, int silent)
struct efs_sb_info *sb;
struct buffer_head *bh;
struct inode *root;
- int ret = -EINVAL;
sb = kzalloc(sizeof(struct efs_sb_info), GFP_KERNEL);
if (!sb)
@@ -256,17 +265,17 @@ static int efs_fill_super(struct super_block *s, void *d, int silent)
s->s_magic = EFS_SUPER_MAGIC;
if (!sb_set_blocksize(s, EFS_BLOCKSIZE)) {
- printk(KERN_ERR "EFS: device does not support %d byte blocks\n",
+ pr_err("device does not support %d byte blocks\n",
EFS_BLOCKSIZE);
- goto out_no_fs_ul;
+ return -EINVAL;
}
/* read the vh (volume header) block */
bh = sb_bread(s, 0);
if (!bh) {
- printk(KERN_ERR "EFS: cannot read volume header\n");
- goto out_no_fs_ul;
+ pr_err("cannot read volume header\n");
+ return -EINVAL;
}
/*
@@ -278,27 +287,28 @@ static int efs_fill_super(struct super_block *s, void *d, int silent)
brelse(bh);
if (sb->fs_start == -1) {
- goto out_no_fs_ul;
+ return -EINVAL;
}
bh = sb_bread(s, sb->fs_start + EFS_SUPER);
if (!bh) {
- printk(KERN_ERR "EFS: cannot read superblock\n");
- goto out_no_fs_ul;
+ pr_err("cannot read superblock\n");
+ return -EINVAL;
}
if (efs_validate_super(sb, (struct efs_super *) bh->b_data)) {
#ifdef DEBUG
- printk(KERN_WARNING "EFS: invalid superblock at block %u\n", sb->fs_start + EFS_SUPER);
+ pr_warn("invalid superblock at block %u\n",
+ sb->fs_start + EFS_SUPER);
#endif
brelse(bh);
- goto out_no_fs_ul;
+ return -EINVAL;
}
brelse(bh);
if (!(s->s_flags & MS_RDONLY)) {
#ifdef DEBUG
- printk(KERN_INFO "EFS: forcing read-only mode\n");
+ pr_info("forcing read-only mode\n");
#endif
s->s_flags |= MS_RDONLY;
}
@@ -306,26 +316,17 @@ static int efs_fill_super(struct super_block *s, void *d, int silent)
s->s_export_op = &efs_export_ops;
root = efs_iget(s, EFS_ROOTINODE);
if (IS_ERR(root)) {
- printk(KERN_ERR "EFS: get root inode failed\n");
- ret = PTR_ERR(root);
- goto out_no_fs;
+ pr_err("get root inode failed\n");
+ return PTR_ERR(root);
}
- s->s_root = d_alloc_root(root);
+ s->s_root = d_make_root(root);
if (!(s->s_root)) {
- printk(KERN_ERR "EFS: get root dentry failed\n");
- iput(root);
- ret = -ENOMEM;
- goto out_no_fs;
+ pr_err("get root dentry failed\n");
+ return -ENOMEM;
}
return 0;
-
-out_no_fs_ul:
-out_no_fs:
- s->s_fs_info = NULL;
- kfree(sb);
- return ret;
}
static int efs_statfs(struct dentry *dentry, struct kstatfs *buf) {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 13:16:24 +0000