aboutsummaryrefslogtreecommitdiff
path: root/fs/jfs/super.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/jfs/super.c')
-rw-r--r--fs/jfs/super.c299
1 files changed, 206 insertions, 93 deletions
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index d929a822a74..adf8cb045b9 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -30,9 +30,10 @@
#include <linux/buffer_head.h>
#include <linux/exportfs.h>
#include <linux/crc32.h>
+#include <linux/slab.h>
#include <asm/uaccess.h>
#include <linux/seq_file.h>
-#include <linux/smp_lock.h>
+#include <linux/blkdev.h>
#include "jfs_incore.h"
#include "jfs_filsys.h"
@@ -43,19 +44,20 @@
#include "jfs_imap.h"
#include "jfs_acl.h"
#include "jfs_debug.h"
+#include "jfs_xattr.h"
MODULE_DESCRIPTION("The Journaled Filesystem (JFS)");
MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM");
MODULE_LICENSE("GPL");
-static struct kmem_cache * jfs_inode_cachep;
+static struct kmem_cache *jfs_inode_cachep;
static const struct super_operations jfs_super_operations;
static const struct export_operations jfs_export_operations;
static struct file_system_type jfs_fs_type;
#define MAX_COMMIT_THREADS 64
-static int commit_threads = 0;
+static int commit_threads;
module_param(commit_threads, int, 0);
MODULE_PARM_DESC(commit_threads, "Number of commit threads");
@@ -82,8 +84,7 @@ static void jfs_handle_error(struct super_block *sb)
panic("JFS (device %s): panic forced after error\n",
sb->s_id);
else if (sbi->flag & JFS_ERR_REMOUNT_RO) {
- jfs_err("ERROR: (device %s): remounting filesystem "
- "as read-only\n",
+ jfs_err("ERROR: (device %s): remounting filesystem as read-only\n",
sb->s_id);
sb->s_flags |= MS_RDONLY;
}
@@ -91,16 +92,20 @@ static void jfs_handle_error(struct super_block *sb)
/* nothing is done for continue beyond marking the superblock dirty */
}
-void jfs_error(struct super_block *sb, const char * function, ...)
+void jfs_error(struct super_block *sb, const char *fmt, ...)
{
- static char error_buf[256];
+ struct va_format vaf;
va_list args;
- va_start(args, function);
- vsnprintf(error_buf, sizeof(error_buf), function, args);
- va_end(args);
+ va_start(args, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ pr_err("ERROR: (device %s): %pf: %pV\n",
+ sb->s_id, __builtin_return_address(0), &vaf);
- printk(KERN_ERR "ERROR: (device %s): %s\n", sb->s_id, error_buf);
+ va_end(args);
jfs_handle_error(sb);
}
@@ -115,6 +120,13 @@ static struct inode *jfs_alloc_inode(struct super_block *sb)
return &jfs_inode->vfs_inode;
}
+static void jfs_i_callback(struct rcu_head *head)
+{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
+ struct jfs_inode_info *ji = JFS_IP(inode);
+ kmem_cache_free(jfs_inode_cachep, ji);
+}
+
static void jfs_destroy_inode(struct inode *inode)
{
struct jfs_inode_info *ji = JFS_IP(inode);
@@ -128,7 +140,7 @@ static void jfs_destroy_inode(struct inode *inode)
ji->active_ag = -1;
}
spin_unlock_irq(&ji->ag_lock);
- kmem_cache_free(jfs_inode_cachep, ji);
+ call_rcu(&inode->i_rcu, jfs_i_callback);
}
static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf)
@@ -146,7 +158,7 @@ static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf)
/*
* If we really return the number of allocated & free inodes, some
* applications will fail because they won't see enough free inodes.
- * We'll try to calculate some guess as to how may inodes we can
+ * We'll try to calculate some guess as to how many inodes we can
* really allocate
*
* buf->f_files = atomic_read(&imap->im_numinos);
@@ -173,7 +185,7 @@ static void jfs_put_super(struct super_block *sb)
jfs_info("In jfs_put_super");
- lock_kernel();
+ dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
rc = jfs_umount(sb);
if (rc)
@@ -185,14 +197,13 @@ static void jfs_put_super(struct super_block *sb)
iput(sbi->direct_inode);
kfree(sbi);
-
- unlock_kernel();
}
enum {
Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize,
Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota,
- Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask
+ Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask,
+ Opt_discard, Opt_nodiscard, Opt_discard_minblk
};
static const match_table_t tokens = {
@@ -209,6 +220,9 @@ static const match_table_t tokens = {
{Opt_uid, "uid=%u"},
{Opt_gid, "gid=%u"},
{Opt_umask, "umask=%u"},
+ {Opt_discard, "discard"},
+ {Opt_nodiscard, "nodiscard"},
+ {Opt_discard_minblk, "discard=%u"},
{Opt_err, NULL}
};
@@ -250,8 +264,7 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
else {
nls_map = load_nls(args[0].from);
if (!nls_map) {
- printk(KERN_ERR
- "JFS: charset not found\n");
+ pr_err("JFS: charset not found\n");
goto cleanup;
}
}
@@ -259,7 +272,10 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
case Opt_resize:
{
char *resize = args[0].from;
- *newLVSize = simple_strtoull(resize, &resize, 0);
+ int rc = kstrtoll(resize, 0, newLVSize);
+
+ if (rc)
+ goto cleanup;
break;
}
case Opt_resize_nosize:
@@ -267,8 +283,7 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
*newLVSize = sb->s_bdev->bd_inode->i_size >>
sb->s_blocksize_bits;
if (*newLVSize == 0)
- printk(KERN_ERR
- "JFS: Cannot determine volume size\n");
+ pr_err("JFS: Cannot determine volume size\n");
break;
}
case Opt_errors:
@@ -289,8 +304,7 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
*flag &= ~JFS_ERR_REMOUNT_RO;
*flag |= JFS_ERR_PANIC;
} else {
- printk(KERN_ERR
- "JFS: %s is an invalid error handler\n",
+ pr_err("JFS: %s is an invalid error handler\n",
errors);
goto cleanup;
}
@@ -309,36 +323,89 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
case Opt_usrquota:
case Opt_grpquota:
case Opt_quota:
- printk(KERN_ERR
- "JFS: quota operations not supported\n");
+ pr_err("JFS: quota operations not supported\n");
break;
#endif
case Opt_uid:
{
char *uid = args[0].from;
- sbi->uid = simple_strtoul(uid, &uid, 0);
+ uid_t val;
+ int rc = kstrtouint(uid, 0, &val);
+
+ if (rc)
+ goto cleanup;
+ sbi->uid = make_kuid(current_user_ns(), val);
+ if (!uid_valid(sbi->uid))
+ goto cleanup;
break;
}
+
case Opt_gid:
{
char *gid = args[0].from;
- sbi->gid = simple_strtoul(gid, &gid, 0);
+ gid_t val;
+ int rc = kstrtouint(gid, 0, &val);
+
+ if (rc)
+ goto cleanup;
+ sbi->gid = make_kgid(current_user_ns(), val);
+ if (!gid_valid(sbi->gid))
+ goto cleanup;
break;
}
+
case Opt_umask:
{
char *umask = args[0].from;
- sbi->umask = simple_strtoul(umask, &umask, 8);
+ int rc = kstrtouint(umask, 8, &sbi->umask);
+
+ if (rc)
+ goto cleanup;
if (sbi->umask & ~0777) {
- printk(KERN_ERR
- "JFS: Invalid value of umask\n");
+ pr_err("JFS: Invalid value of umask\n");
goto cleanup;
}
break;
}
+
+ case Opt_discard:
+ {
+ struct request_queue *q = bdev_get_queue(sb->s_bdev);
+ /* if set to 1, even copying files will cause
+ * trimming :O
+ * -> user has more control over the online trimming
+ */
+ sbi->minblks_trim = 64;
+ if (blk_queue_discard(q))
+ *flag |= JFS_DISCARD;
+ else
+ pr_err("JFS: discard option not supported on device\n");
+ break;
+ }
+
+ case Opt_nodiscard:
+ *flag &= ~JFS_DISCARD;
+ break;
+
+ case Opt_discard_minblk:
+ {
+ struct request_queue *q = bdev_get_queue(sb->s_bdev);
+ char *minblks_trim = args[0].from;
+ int rc;
+ if (blk_queue_discard(q)) {
+ *flag |= JFS_DISCARD;
+ rc = kstrtouint(minblks_trim, 0,
+ &sbi->minblks_trim);
+ if (rc)
+ goto cleanup;
+ } else
+ pr_err("JFS: discard option not supported on device\n");
+ break;
+ }
+
default:
- printk("jfs: Unrecognized mount option \"%s\" "
- " or missing value\n", p);
+ printk("jfs: Unrecognized mount option \"%s\" or missing value\n",
+ p);
goto cleanup;
}
}
@@ -363,22 +430,18 @@ static int jfs_remount(struct super_block *sb, int *flags, char *data)
int flag = JFS_SBI(sb)->flag;
int ret;
- if (!parse_options(data, sb, &newLVSize, &flag)) {
+ sync_filesystem(sb);
+ if (!parse_options(data, sb, &newLVSize, &flag))
return -EINVAL;
- }
- lock_kernel();
+
if (newLVSize) {
if (sb->s_flags & MS_RDONLY) {
- printk(KERN_ERR
- "JFS: resize requires volume to be mounted read-write\n");
- unlock_kernel();
+ pr_err("JFS: resize requires volume to be mounted read-write\n");
return -EROFS;
}
rc = jfs_extendfs(sb, newLVSize, 0);
- if (rc) {
- unlock_kernel();
+ if (rc)
return rc;
- }
}
if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
@@ -390,30 +453,33 @@ static int jfs_remount(struct super_block *sb, int *flags, char *data)
JFS_SBI(sb)->flag = flag;
ret = jfs_mount_rw(sb, 1);
- unlock_kernel();
+
+ /* mark the fs r/w for quota activity */
+ sb->s_flags &= ~MS_RDONLY;
+
+ dquot_resume(sb, -1);
return ret;
}
if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) {
+ rc = dquot_suspend(sb, -1);
+ if (rc < 0)
+ return rc;
rc = jfs_umount_rw(sb);
JFS_SBI(sb)->flag = flag;
- unlock_kernel();
return rc;
}
if ((JFS_SBI(sb)->flag & JFS_NOINTEGRITY) != (flag & JFS_NOINTEGRITY))
if (!(sb->s_flags & MS_RDONLY)) {
rc = jfs_umount_rw(sb);
- if (rc) {
- unlock_kernel();
+ if (rc)
return rc;
- }
+
JFS_SBI(sb)->flag = flag;
ret = jfs_mount_rw(sb, 1);
- unlock_kernel();
return ret;
}
JFS_SBI(sb)->flag = flag;
- unlock_kernel();
return 0;
}
@@ -430,20 +496,22 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
if (!new_valid_dev(sb->s_bdev->bd_dev))
return -EOVERFLOW;
- sbi = kzalloc(sizeof (struct jfs_sb_info), GFP_KERNEL);
+ sbi = kzalloc(sizeof(struct jfs_sb_info), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
+
sb->s_fs_info = sbi;
+ sb->s_max_links = JFS_LINK_MAX;
sbi->sb = sb;
- sbi->uid = sbi->gid = sbi->umask = -1;
+ sbi->uid = INVALID_UID;
+ sbi->gid = INVALID_GID;
+ sbi->umask = -1;
/* initialize the mount flag and determine the default error handler */
flag = JFS_ERR_REMOUNT_RO;
- if (!parse_options((char *) data, sb, &newLVSize, &flag)) {
- kfree(sbi);
- return -EINVAL;
- }
+ if (!parse_options((char *) data, sb, &newLVSize, &flag))
+ goto out_kfree;
sbi->flag = flag;
#ifdef CONFIG_JFS_POSIX_ACL
@@ -451,8 +519,8 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
#endif
if (newLVSize) {
- printk(KERN_ERR "resize option for remount only\n");
- return -EINVAL;
+ pr_err("resize option for remount only\n");
+ goto out_kfree;
}
/*
@@ -465,6 +533,11 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
*/
sb->s_op = &jfs_super_operations;
sb->s_export_op = &jfs_export_operations;
+ sb->s_xattr = jfs_xattr_handlers;
+#ifdef CONFIG_QUOTA
+ sb->dq_op = &dquot_operations;
+ sb->s_qcop = &dquot_quotactl_ops;
+#endif
/*
* Initialize direct-mapping inode/address-space
@@ -472,10 +545,9 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
inode = new_inode(sb);
if (inode == NULL) {
ret = -ENOMEM;
- goto out_kfree;
+ goto out_unload;
}
inode->i_ino = 0;
- inode->i_nlink = 1;
inode->i_size = sb->s_bdev->bd_inode->i_size;
inode->i_mapping->a_ops = &jfs_metapage_aops;
insert_inode_hash(inode);
@@ -485,9 +557,8 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
rc = jfs_mount(sb);
if (rc) {
- if (!silent) {
+ if (!silent)
jfs_err("jfs_mount failed w/return code = %d", rc);
- }
goto out_mount_failed;
}
if (sb->s_flags & MS_RDONLY)
@@ -505,18 +576,18 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_magic = JFS_SUPER_MAGIC;
+ if (sbi->mntflag & JFS_OS2)
+ sb->s_d_op = &jfs_ci_dentry_operations;
+
inode = jfs_iget(sb, ROOT_I);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
goto out_no_rw;
}
- sb->s_root = d_alloc_root(inode);
+ sb->s_root = d_make_root(inode);
if (!sb->s_root)
goto out_no_root;
- if (sbi->mntflag & JFS_OS2)
- sb->s_root->d_op = &jfs_ci_dentry_operations;
-
/* logical blocks are represented by 40 bits in pxd_t, etc. */
sb->s_maxbytes = ((u64) sb->s_blocksize) << 40;
#if BITS_PER_LONG == 32
@@ -524,29 +595,29 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
* Page cache is indexed by long.
* I would use MAX_LFS_FILESIZE, but it's only half as big
*/
- sb->s_maxbytes = min(((u64) PAGE_CACHE_SIZE << 32) - 1, (u64)sb->s_maxbytes);
+ sb->s_maxbytes = min(((u64) PAGE_CACHE_SIZE << 32) - 1,
+ (u64)sb->s_maxbytes);
#endif
sb->s_time_gran = 1;
return 0;
out_no_root:
jfs_err("jfs_read_super: get root dentry failed");
- iput(inode);
out_no_rw:
rc = jfs_umount(sb);
- if (rc) {
+ if (rc)
jfs_err("jfs_umount failed with return code %d", rc);
- }
out_mount_failed:
filemap_write_and_wait(sbi->direct_inode->i_mapping);
truncate_inode_pages(sbi->direct_inode->i_mapping, 0);
make_bad_inode(sbi->direct_inode);
iput(sbi->direct_inode);
sbi->direct_inode = NULL;
-out_kfree:
+out_unload:
if (sbi->nls_tab)
unload_nls(sbi->nls_tab);
+out_kfree:
kfree(sbi);
return ret;
}
@@ -555,11 +626,28 @@ static int jfs_freeze(struct super_block *sb)
{
struct jfs_sb_info *sbi = JFS_SBI(sb);
struct jfs_log *log = sbi->log;
+ int rc = 0;
if (!(sb->s_flags & MS_RDONLY)) {
txQuiesce(sb);
- lmLogShutdown(log);
- updateSuper(sb, FM_CLEAN);
+ rc = lmLogShutdown(log);
+ if (rc) {
+ jfs_error(sb, "lmLogShutdown failed\n");
+
+ /* let operations fail rather than hang */
+ txResume(sb);
+
+ return rc;
+ }
+ rc = updateSuper(sb, FM_CLEAN);
+ if (rc) {
+ jfs_err("jfs_freeze: updateSuper failed\n");
+ /*
+ * Don't fail here. Everything succeeded except
+ * marking the superblock clean, so there's really
+ * no harm in leaving it frozen for now.
+ */
+ }
}
return 0;
}
@@ -571,20 +659,24 @@ static int jfs_unfreeze(struct super_block *sb)
int rc = 0;
if (!(sb->s_flags & MS_RDONLY)) {
- updateSuper(sb, FM_MOUNT);
- if ((rc = lmLogInit(log)))
- jfs_err("jfs_unlock failed with return code %d", rc);
- else
- txResume(sb);
+ rc = updateSuper(sb, FM_MOUNT);
+ if (rc) {
+ jfs_error(sb, "updateSuper failed\n");
+ goto out;
+ }
+ rc = lmLogInit(log);
+ if (rc)
+ jfs_error(sb, "lmLogInit failed\n");
+out:
+ txResume(sb);
}
- return 0;
+ return rc;
}
-static int jfs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+static struct dentry *jfs_do_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, jfs_fill_super,
- mnt);
+ return mount_bdev(fs_type, flags, dev_name, data, jfs_fill_super);
}
static int jfs_sync_fs(struct super_block *sb, int wait)
@@ -593,6 +685,11 @@ static int jfs_sync_fs(struct super_block *sb, int wait)
/* log == NULL indicates read-only mount */
if (log) {
+ /*
+ * Write quota structures to quota file, sync_blockdev() will
+ * write them to disk later
+ */
+ dquot_writeback_dquots(sb, -1);
jfs_flush_journal(log, wait);
jfs_syncpt(log, 0);
}
@@ -600,18 +697,20 @@ static int jfs_sync_fs(struct super_block *sb, int wait)
return 0;
}
-static int jfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
+static int jfs_show_options(struct seq_file *seq, struct dentry *root)
{
- struct jfs_sb_info *sbi = JFS_SBI(vfs->mnt_sb);
+ struct jfs_sb_info *sbi = JFS_SBI(root->d_sb);
- if (sbi->uid != -1)
- seq_printf(seq, ",uid=%d", sbi->uid);
- if (sbi->gid != -1)
- seq_printf(seq, ",gid=%d", sbi->gid);
+ if (uid_valid(sbi->uid))
+ seq_printf(seq, ",uid=%d", from_kuid(&init_user_ns, sbi->uid));
+ if (gid_valid(sbi->gid))
+ seq_printf(seq, ",gid=%d", from_kgid(&init_user_ns, sbi->gid));
if (sbi->umask != -1)
seq_printf(seq, ",umask=%03o", sbi->umask);
if (sbi->flag & JFS_NOINTEGRITY)
seq_puts(seq, ",nointegrity");
+ if (sbi->flag & JFS_DISCARD)
+ seq_printf(seq, ",discard=%u", sbi->minblks_trim);
if (sbi->nls_tab)
seq_printf(seq, ",iocharset=%s", sbi->nls_tab->charset);
if (sbi->flag & JFS_ERR_CONTINUE)
@@ -634,7 +733,7 @@ static int jfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
/* Read data from quotafile - avoid pagecache and such because we cannot afford
* acquiring the locks... As quota files are never truncated and quota code
- * itself serializes the operations (and noone else should touch the files)
+ * itself serializes the operations (and no one else should touch the files)
* we don't have to be afraid of races */
static ssize_t jfs_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off)
@@ -744,7 +843,7 @@ static const struct super_operations jfs_super_operations = {
.destroy_inode = jfs_destroy_inode,
.dirty_inode = jfs_dirty_inode,
.write_inode = jfs_write_inode,
- .delete_inode = jfs_delete_inode,
+ .evict_inode = jfs_evict_inode,
.put_super = jfs_put_super,
.sync_fs = jfs_sync_fs,
.freeze_fs = jfs_freeze,
@@ -767,10 +866,11 @@ static const struct export_operations jfs_export_operations = {
static struct file_system_type jfs_fs_type = {
.owner = THIS_MODULE,
.name = "jfs",
- .get_sb = jfs_get_sb,
+ .mount = jfs_do_mount,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("jfs");
static void init_once(void *foo)
{
@@ -832,7 +932,8 @@ static int __init init_jfs_fs(void)
commit_threads = MAX_COMMIT_THREADS;
for (i = 0; i < commit_threads; i++) {
- jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL, "jfsCommit");
+ jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL,
+ "jfsCommit");
if (IS_ERR(jfsCommitThread[i])) {
rc = PTR_ERR(jfsCommitThread[i]);
jfs_err("init_jfs_fs: fork failed w/rc = %d", rc);
@@ -852,8 +953,14 @@ static int __init init_jfs_fs(void)
jfs_proc_init();
#endif
- return register_filesystem(&jfs_fs_type);
+ rc = register_filesystem(&jfs_fs_type);
+ if (!rc)
+ return 0;
+#ifdef PROC_FS_JFS
+ jfs_proc_clean();
+#endif
+ kthread_stop(jfsSyncThread);
kill_committask:
for (i = 0; i < commit_threads; i++)
kthread_stop(jfsCommitThread[i]);
@@ -884,6 +991,12 @@ static void __exit exit_jfs_fs(void)
jfs_proc_clean();
#endif
unregister_filesystem(&jfs_fs_type);
+
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * destroy cache.
+ */
+ rcu_barrier();
kmem_cache_destroy(jfs_inode_cachep);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 08:51:17 +0000