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Diffstat (limited to 'fs/jfs/super.c')
-rw-r--r--fs/jfs/super.c137
1 files changed, 88 insertions, 49 deletions
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 1a543be09c7..adf8cb045b9 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -44,19 +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");
@@ -83,8 +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;
}
@@ -92,16 +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);
- pr_err("ERROR: (device %s): %s\n", sb->s_id, error_buf);
+ va_end(args);
jfs_handle_error(sb);
}
@@ -154,7 +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);
@@ -268,7 +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:
@@ -322,7 +329,11 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
case Opt_uid:
{
char *uid = args[0].from;
- uid_t val = 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;
@@ -332,7 +343,11 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
case Opt_gid:
{
char *gid = args[0].from;
- gid_t val = 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;
@@ -342,7 +357,10 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
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) {
pr_err("JFS: Invalid value of umask\n");
goto cleanup;
@@ -358,12 +376,10 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
* -> user has more control over the online trimming
*/
sbi->minblks_trim = 64;
- if (blk_queue_discard(q)) {
+ if (blk_queue_discard(q))
*flag |= JFS_DISCARD;
- } else {
- pr_err("JFS: discard option " \
- "not supported on device\n");
- }
+ else
+ pr_err("JFS: discard option not supported on device\n");
break;
}
@@ -375,20 +391,21 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
{
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;
- sbi->minblks_trim = simple_strtoull(
- minblks_trim, &minblks_trim, 0);
- } else {
- pr_err("JFS: discard option " \
- "not supported on device\n");
- }
+ 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;
}
}
@@ -413,14 +430,13 @@ 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;
- }
if (newLVSize) {
if (sb->s_flags & MS_RDONLY) {
- pr_err("JFS: resize requires volume" \
- " to be mounted read-write\n");
+ pr_err("JFS: resize requires volume to be mounted read-write\n");
return -EROFS;
}
rc = jfs_extendfs(sb, newLVSize, 0);
@@ -446,9 +462,8 @@ static int jfs_remount(struct super_block *sb, int *flags, char *data)
}
if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) {
rc = dquot_suspend(sb, -1);
- if (rc < 0) {
+ if (rc < 0)
return rc;
- }
rc = jfs_umount_rw(sb);
JFS_SBI(sb)->flag = flag;
return rc;
@@ -481,7 +496,7 @@ 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;
@@ -518,6 +533,7 @@ 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;
@@ -541,9 +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)
@@ -580,7 +595,8 @@ 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;
@@ -590,9 +606,8 @@ out_no_root:
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);
@@ -611,11 +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;
}
@@ -627,13 +659,18 @@ 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 struct dentry *jfs_do_mount(struct file_system_type *fs_type,
@@ -833,6 +870,7 @@ static struct file_system_type jfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("jfs");
static void init_once(void *foo)
{
@@ -894,7 +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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 14:11:06 +0000