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-rw-r--r--fs/ext3/super.c796
1 files changed, 451 insertions, 345 deletions
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index afa2b569da1..08cdfe5461e 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -17,29 +17,23 @@
*/
#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/fs.h>
-#include <linux/time.h>
-#include <linux/jbd.h>
-#include <linux/ext3_fs.h>
-#include <linux/ext3_jbd.h>
-#include <linux/slab.h>
-#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/parser.h>
-#include <linux/smp_lock.h>
-#include <linux/buffer_head.h>
#include <linux/exportfs.h>
-#include <linux/vfs.h>
+#include <linux/statfs.h>
#include <linux/random.h>
#include <linux/mount.h>
-#include <linux/namei.h>
#include <linux/quotaops.h>
#include <linux/seq_file.h>
#include <linux/log2.h>
+#include <linux/cleancache.h>
+#include <linux/namei.h>
#include <asm/uaccess.h>
+#define CREATE_TRACE_POINTS
+
+#include "ext3.h"
#include "xattr.h"
#include "acl.h"
#include "namei.h"
@@ -71,11 +65,6 @@ static int ext3_freeze(struct super_block *sb);
/*
* Wrappers for journal_start/end.
- *
- * The only special thing we need to do here is to make sure that all
- * journal_end calls result in the superblock being marked dirty, so
- * that sync() will call the filesystem's write_super callback if
- * appropriate.
*/
handle_t *ext3_journal_start_sb(struct super_block *sb, int nblocks)
{
@@ -97,12 +86,6 @@ handle_t *ext3_journal_start_sb(struct super_block *sb, int nblocks)
return journal_start(journal, nblocks);
}
-/*
- * The only special thing we need to do here is to make sure that all
- * journal_stop calls result in the superblock being marked dirty, so
- * that sync() will call the filesystem's write_super callback if
- * appropriate.
- */
int __ext3_journal_stop(const char *where, handle_t *handle)
{
struct super_block *sb;
@@ -144,12 +127,16 @@ void ext3_journal_abort_handle(const char *caller, const char *err_fn,
void ext3_msg(struct super_block *sb, const char *prefix,
const char *fmt, ...)
{
+ struct va_format vaf;
va_list args;
va_start(args, fmt);
- printk("%sEXT3-fs (%s): ", prefix, sb->s_id);
- vprintk(fmt, args);
- printk("\n");
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ printk("%sEXT3-fs (%s): %pV\n", prefix, sb->s_id, &vaf);
+
va_end(args);
}
@@ -164,7 +151,7 @@ void ext3_msg(struct super_block *sb, const char *prefix,
* write out the superblock safely.
*
* We'll just use the journal_abort() error code to record an error in
- * the journal instead. On recovery, the journal will compain about
+ * the journal instead. On recovery, the journal will complain about
* that error until we've noted it down and cleared it.
*/
@@ -181,13 +168,18 @@ static void ext3_handle_error(struct super_block *sb)
if (!test_opt (sb, ERRORS_CONT)) {
journal_t *journal = EXT3_SB(sb)->s_journal;
- EXT3_SB(sb)->s_mount_opt |= EXT3_MOUNT_ABORT;
+ set_opt(EXT3_SB(sb)->s_mount_opt, ABORT);
if (journal)
journal_abort(journal, -EIO);
}
if (test_opt (sb, ERRORS_RO)) {
ext3_msg(sb, KERN_CRIT,
"error: remounting filesystem read-only");
+ /*
+ * Make sure updated value of ->s_mount_state will be visible
+ * before ->s_flags update.
+ */
+ smp_wmb();
sb->s_flags |= MS_RDONLY;
}
ext3_commit_super(sb, es, 1);
@@ -196,15 +188,20 @@ static void ext3_handle_error(struct super_block *sb)
sb->s_id);
}
-void ext3_error (struct super_block * sb, const char * function,
- const char * fmt, ...)
+void ext3_error(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
+ struct va_format vaf;
va_list args;
va_start(args, fmt);
- printk(KERN_CRIT "EXT3-fs error (device %s): %s: ",sb->s_id, function);
- vprintk(fmt, args);
- printk("\n");
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ printk(KERN_CRIT "EXT3-fs error (device %s): %s: %pV\n",
+ sb->s_id, function, &vaf);
+
va_end(args);
ext3_handle_error(sb);
@@ -275,15 +272,20 @@ void __ext3_std_error (struct super_block * sb, const char * function,
* case we take the easy way out and panic immediately.
*/
-void ext3_abort (struct super_block * sb, const char * function,
- const char * fmt, ...)
+void ext3_abort(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
+ struct va_format vaf;
va_list args;
va_start(args, fmt);
- printk(KERN_CRIT "EXT3-fs (%s): error: %s: ", sb->s_id, function);
- vprintk(fmt, args);
- printk("\n");
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ printk(KERN_CRIT "EXT3-fs (%s): error: %s: %pV\n",
+ sb->s_id, function, &vaf);
+
va_end(args);
if (test_opt(sb, ERRORS_PANIC))
@@ -295,22 +297,32 @@ void ext3_abort (struct super_block * sb, const char * function,
ext3_msg(sb, KERN_CRIT,
"error: remounting filesystem read-only");
EXT3_SB(sb)->s_mount_state |= EXT3_ERROR_FS;
+ set_opt(EXT3_SB(sb)->s_mount_opt, ABORT);
+ /*
+ * Make sure updated value of ->s_mount_state will be visible
+ * before ->s_flags update.
+ */
+ smp_wmb();
sb->s_flags |= MS_RDONLY;
- EXT3_SB(sb)->s_mount_opt |= EXT3_MOUNT_ABORT;
+
if (EXT3_SB(sb)->s_journal)
journal_abort(EXT3_SB(sb)->s_journal, -EIO);
}
-void ext3_warning (struct super_block * sb, const char * function,
- const char * fmt, ...)
+void ext3_warning(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
+ struct va_format vaf;
va_list args;
va_start(args, fmt);
- printk(KERN_WARNING "EXT3-fs (%s): warning: %s: ",
- sb->s_id, function);
- vprintk(fmt, args);
- printk("\n");
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ printk(KERN_WARNING "EXT3-fs (%s): warning: %s: %pV\n",
+ sb->s_id, function, &vaf);
+
va_end(args);
}
@@ -347,13 +359,13 @@ static struct block_device *ext3_blkdev_get(dev_t dev, struct super_block *sb)
struct block_device *bdev;
char b[BDEVNAME_SIZE];
- bdev = open_by_devnum(dev, FMODE_READ|FMODE_WRITE);
+ bdev = blkdev_get_by_dev(dev, FMODE_READ|FMODE_WRITE|FMODE_EXCL, sb);
if (IS_ERR(bdev))
goto fail;
return bdev;
fail:
- ext3_msg(sb, "error: failed to open journal device %s: %ld",
+ ext3_msg(sb, KERN_ERR, "error: failed to open journal device %s: %ld",
__bdevname(dev, b), PTR_ERR(bdev));
return NULL;
@@ -362,23 +374,19 @@ fail:
/*
* Release the journal device
*/
-static int ext3_blkdev_put(struct block_device *bdev)
+static void ext3_blkdev_put(struct block_device *bdev)
{
- bd_release(bdev);
- return blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
+ blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
}
-static int ext3_blkdev_remove(struct ext3_sb_info *sbi)
+static void ext3_blkdev_remove(struct ext3_sb_info *sbi)
{
struct block_device *bdev;
- int ret = -ENODEV;
-
bdev = sbi->journal_bdev;
if (bdev) {
- ret = ext3_blkdev_put(bdev);
+ ext3_blkdev_put(bdev);
sbi->journal_bdev = NULL;
}
- return ret;
}
static inline struct inode *orphan_list_entry(struct list_head *l)
@@ -410,8 +418,7 @@ static void ext3_put_super (struct super_block * sb)
struct ext3_super_block *es = sbi->s_es;
int i, err;
- lock_kernel();
-
+ dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
ext3_xattr_put_super(sb);
err = journal_destroy(sbi->s_journal);
sbi->s_journal = NULL;
@@ -460,8 +467,6 @@ static void ext3_put_super (struct super_block * sb)
sb->s_fs_info = NULL;
kfree(sbi->s_blockgroup_lock);
kfree(sbi);
-
- unlock_kernel();
}
static struct kmem_cache *ext3_inode_cachep;
@@ -483,6 +488,20 @@ static struct inode *ext3_alloc_inode(struct super_block *sb)
return &ei->vfs_inode;
}
+static int ext3_drop_inode(struct inode *inode)
+{
+ int drop = generic_drop_inode(inode);
+
+ trace_ext3_drop_inode(inode, drop);
+ return drop;
+}
+
+static void ext3_i_callback(struct rcu_head *head)
+{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
+ kmem_cache_free(ext3_inode_cachep, EXT3_I(inode));
+}
+
static void ext3_destroy_inode(struct inode *inode)
{
if (!list_empty(&(EXT3_I(inode)->i_orphan))) {
@@ -493,7 +512,7 @@ static void ext3_destroy_inode(struct inode *inode)
false);
dump_stack();
}
- kmem_cache_free(ext3_inode_cachep, EXT3_I(inode));
+ call_rcu(&inode->i_rcu, ext3_i_callback);
}
static void init_once(void *foo)
@@ -508,7 +527,7 @@ static void init_once(void *foo)
inode_init_once(&ei->vfs_inode);
}
-static int init_inodecache(void)
+static int __init init_inodecache(void)
{
ext3_inode_cachep = kmem_cache_create("ext3_inode_cache",
sizeof(struct ext3_inode_info),
@@ -522,18 +541,14 @@ 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(ext3_inode_cachep);
}
-static void ext3_clear_inode(struct inode *inode)
-{
- struct ext3_block_alloc_info *rsv = EXT3_I(inode)->i_block_alloc_info;
- ext3_discard_reservation(inode);
- EXT3_I(inode)->i_block_alloc_info = NULL;
- if (unlikely(rsv))
- kfree(rsv);
-}
-
static inline void ext3_show_quota_options(struct seq_file *seq, struct super_block *sb)
{
#if defined(CONFIG_QUOTA)
@@ -562,10 +577,10 @@ static inline void ext3_show_quota_options(struct seq_file *seq, struct super_bl
if (sbi->s_qf_names[GRPQUOTA])
seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
- if (sbi->s_mount_opt & EXT3_MOUNT_USRQUOTA)
+ if (test_opt(sb, USRQUOTA))
seq_puts(seq, ",usrquota");
- if (sbi->s_mount_opt & EXT3_MOUNT_GRPQUOTA)
+ if (test_opt(sb, GRPQUOTA))
seq_puts(seq, ",grpquota");
#endif
}
@@ -588,9 +603,9 @@ static char *data_mode_string(unsigned long mode)
* - it's set to a non-default value OR
* - if the per-sb default is different from the global default
*/
-static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs)
+static int ext3_show_options(struct seq_file *seq, struct dentry *root)
{
- struct super_block *sb = vfs->mnt_sb;
+ struct super_block *sb = root->d_sb;
struct ext3_sb_info *sbi = EXT3_SB(sb);
struct ext3_super_block *es = sbi->s_es;
unsigned long def_mount_opts;
@@ -605,13 +620,15 @@ static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs)
seq_puts(seq, ",grpid");
if (!test_opt(sb, GRPID) && (def_mount_opts & EXT3_DEFM_BSDGROUPS))
seq_puts(seq, ",nogrpid");
- if (sbi->s_resuid != EXT3_DEF_RESUID ||
+ if (!uid_eq(sbi->s_resuid, make_kuid(&init_user_ns, EXT3_DEF_RESUID)) ||
le16_to_cpu(es->s_def_resuid) != EXT3_DEF_RESUID) {
- seq_printf(seq, ",resuid=%u", sbi->s_resuid);
+ seq_printf(seq, ",resuid=%u",
+ from_kuid_munged(&init_user_ns, sbi->s_resuid));
}
- if (sbi->s_resgid != EXT3_DEF_RESGID ||
+ if (!gid_eq(sbi->s_resgid, make_kgid(&init_user_ns, EXT3_DEF_RESGID)) ||
le16_to_cpu(es->s_def_resgid) != EXT3_DEF_RESGID) {
- seq_printf(seq, ",resgid=%u", sbi->s_resgid);
+ seq_printf(seq, ",resgid=%u",
+ from_kgid_munged(&init_user_ns, sbi->s_resgid));
}
if (test_opt(sb, ERRORS_RO)) {
int def_errors = le16_to_cpu(es->s_errors);
@@ -629,8 +646,6 @@ static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs)
seq_puts(seq, ",nouid32");
if (test_opt(sb, DEBUG))
seq_puts(seq, ",debug");
- if (test_opt(sb, OLDALLOC))
- seq_puts(seq, ",oldalloc");
#ifdef CONFIG_EXT3_FS_XATTR
if (test_opt(sb, XATTR_USER))
seq_puts(seq, ",user_xattr");
@@ -651,13 +666,13 @@ static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs)
seq_printf(seq, ",commit=%u",
(unsigned) (sbi->s_commit_interval / HZ));
}
- if (test_opt(sb, BARRIER))
- seq_puts(seq, ",barrier=1");
- if (test_opt(sb, NOBH))
- seq_puts(seq, ",nobh");
- seq_printf(seq, ",data=%s", data_mode_string(sbi->s_mount_opt &
- EXT3_MOUNT_DATA_FLAGS));
+ /*
+ * Always display barrier state so it's clear what the status is.
+ */
+ seq_puts(seq, ",barrier=");
+ seq_puts(seq, test_opt(sb, BARRIER) ? "1" : "0");
+ seq_printf(seq, ",data=%s", data_mode_string(test_opt(sb, DATA_FLAGS)));
if (test_opt(sb, DATA_ERR_ABORT))
seq_puts(seq, ",data_err=abort");
@@ -743,7 +758,7 @@ static int ext3_release_dquot(struct dquot *dquot);
static int ext3_mark_dquot_dirty(struct dquot *dquot);
static int ext3_write_info(struct super_block *sb, int type);
static int ext3_quota_on(struct super_block *sb, int type, int format_id,
- char *path, int remount);
+ struct path *path);
static int ext3_quota_on_mount(struct super_block *sb, int type);
static ssize_t ext3_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off);
@@ -751,13 +766,6 @@ static ssize_t ext3_quota_write(struct super_block *sb, int type,
const char *data, size_t len, loff_t off);
static const struct dquot_operations ext3_quota_operations = {
- .initialize = dquot_initialize,
- .drop = dquot_drop,
- .alloc_space = dquot_alloc_space,
- .alloc_inode = dquot_alloc_inode,
- .free_space = dquot_free_space,
- .free_inode = dquot_free_inode,
- .transfer = dquot_transfer,
.write_dquot = ext3_write_dquot,
.acquire_dquot = ext3_acquire_dquot,
.release_dquot = ext3_release_dquot,
@@ -769,12 +777,12 @@ static const struct dquot_operations ext3_quota_operations = {
static const struct quotactl_ops ext3_qctl_operations = {
.quota_on = ext3_quota_on,
- .quota_off = vfs_quota_off,
- .quota_sync = vfs_quota_sync,
- .get_info = vfs_get_dqinfo,
- .set_info = vfs_set_dqinfo,
- .get_dqblk = vfs_get_dqblk,
- .set_dqblk = vfs_set_dqblk
+ .quota_off = dquot_quota_off,
+ .quota_sync = dquot_quota_sync,
+ .get_info = dquot_get_dqinfo,
+ .set_info = dquot_set_dqinfo,
+ .get_dqblk = dquot_get_dqblk,
+ .set_dqblk = dquot_set_dqblk
};
#endif
@@ -783,14 +791,14 @@ static const struct super_operations ext3_sops = {
.destroy_inode = ext3_destroy_inode,
.write_inode = ext3_write_inode,
.dirty_inode = ext3_dirty_inode,
- .delete_inode = ext3_delete_inode,
+ .drop_inode = ext3_drop_inode,
+ .evict_inode = ext3_evict_inode,
.put_super = ext3_put_super,
.sync_fs = ext3_sync_fs,
.freeze_fs = ext3_freeze,
.unfreeze_fs = ext3_unfreeze,
.statfs = ext3_statfs,
.remount_fs = ext3_remount,
- .clear_inode = ext3_clear_inode,
.show_options = ext3_show_options,
#ifdef CONFIG_QUOTA
.quota_read = ext3_quota_read,
@@ -812,12 +820,13 @@ enum {
Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
Opt_reservation, Opt_noreservation, Opt_noload, Opt_nobh, Opt_bh,
Opt_commit, Opt_journal_update, Opt_journal_inum, Opt_journal_dev,
+ Opt_journal_path,
Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
Opt_data_err_abort, Opt_data_err_ignore,
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
- Opt_noquota, Opt_ignore, Opt_barrier, Opt_err, Opt_resize,
- Opt_usrquota, Opt_grpquota
+ Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err,
+ Opt_resize, Opt_usrquota, Opt_grpquota
};
static const match_table_t tokens = {
@@ -853,6 +862,7 @@ static const match_table_t tokens = {
{Opt_journal_update, "journal=update"},
{Opt_journal_inum, "journal=%u"},
{Opt_journal_dev, "journal_dev=%u"},
+ {Opt_journal_path, "journal_path=%s"},
{Opt_abort, "abort"},
{Opt_data_journal, "data=journal"},
{Opt_data_ordered, "data=ordered"},
@@ -871,6 +881,8 @@ static const match_table_t tokens = {
{Opt_quota, "quota"},
{Opt_usrquota, "usrquota"},
{Opt_barrier, "barrier=%u"},
+ {Opt_barrier, "barrier"},
+ {Opt_nobarrier, "nobarrier"},
{Opt_resize, "resize"},
{Opt_err, NULL},
};
@@ -886,7 +898,7 @@ static ext3_fsblk_t get_sb_block(void **data, struct super_block *sb)
/*todo: use simple_strtoll with >32bit ext3 */
sb_block = simple_strtoul(options, &options, 0);
if (*options && *options != ',') {
- ext3_msg(sb, "error: invalid sb specification: %s",
+ ext3_msg(sb, KERN_ERR, "error: invalid sb specification: %s",
(char *) *data);
return 1;
}
@@ -896,6 +908,65 @@ static ext3_fsblk_t get_sb_block(void **data, struct super_block *sb)
return sb_block;
}
+#ifdef CONFIG_QUOTA
+static int set_qf_name(struct super_block *sb, int qtype, substring_t *args)
+{
+ struct ext3_sb_info *sbi = EXT3_SB(sb);
+ char *qname;
+
+ if (sb_any_quota_loaded(sb) &&
+ !sbi->s_qf_names[qtype]) {
+ ext3_msg(sb, KERN_ERR,
+ "Cannot change journaled "
+ "quota options when quota turned on");
+ return 0;
+ }
+ qname = match_strdup(args);
+ if (!qname) {
+ ext3_msg(sb, KERN_ERR,
+ "Not enough memory for storing quotafile name");
+ return 0;
+ }
+ if (sbi->s_qf_names[qtype]) {
+ int same = !strcmp(sbi->s_qf_names[qtype], qname);
+
+ kfree(qname);
+ if (!same) {
+ ext3_msg(sb, KERN_ERR,
+ "%s quota file already specified",
+ QTYPE2NAME(qtype));
+ }
+ return same;
+ }
+ if (strchr(qname, '/')) {
+ ext3_msg(sb, KERN_ERR,
+ "quotafile must be on filesystem root");
+ kfree(qname);
+ return 0;
+ }
+ sbi->s_qf_names[qtype] = qname;
+ set_opt(sbi->s_mount_opt, QUOTA);
+ return 1;
+}
+
+static int clear_qf_name(struct super_block *sb, int qtype) {
+
+ struct ext3_sb_info *sbi = EXT3_SB(sb);
+
+ if (sb_any_quota_loaded(sb) &&
+ sbi->s_qf_names[qtype]) {
+ ext3_msg(sb, KERN_ERR, "Cannot change journaled quota options"
+ " when quota turned on");
+ return 0;
+ }
+ if (sbi->s_qf_names[qtype]) {
+ kfree(sbi->s_qf_names[qtype]);
+ sbi->s_qf_names[qtype] = NULL;
+ }
+ return 1;
+}
+#endif
+
static int parse_options (char *options, struct super_block *sb,
unsigned int *inum, unsigned long *journal_devnum,
ext3_fsblk_t *n_blocks_count, int is_remount)
@@ -905,9 +976,15 @@ static int parse_options (char *options, struct super_block *sb,
substring_t args[MAX_OPT_ARGS];
int data_opt = 0;
int option;
+ kuid_t uid;
+ kgid_t gid;
+ char *journal_path;
+ struct inode *journal_inode;
+ struct path path;
+ int error;
+
#ifdef CONFIG_QUOTA
- int qtype, qfmt;
- char *qname;
+ int qfmt;
#endif
if (!options)
@@ -917,7 +994,11 @@ static int parse_options (char *options, struct super_block *sb,
int token;
if (!*p)
continue;
-
+ /*
+ * Initialize args struct so we know whether arg was
+ * found; some options take optional arguments.
+ */
+ args[0].to = args[0].from = NULL;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bsd_df:
@@ -935,12 +1016,23 @@ static int parse_options (char *options, struct super_block *sb,
case Opt_resuid:
if (match_int(&args[0], &option))
return 0;
- sbi->s_resuid = option;
+ uid = make_kuid(current_user_ns(), option);
+ if (!uid_valid(uid)) {
+ ext3_msg(sb, KERN_ERR, "Invalid uid value %d", option);
+ return 0;
+
+ }
+ sbi->s_resuid = uid;
break;
case Opt_resgid:
if (match_int(&args[0], &option))
return 0;
- sbi->s_resgid = option;
+ gid = make_kgid(current_user_ns(), option);
+ if (!gid_valid(gid)) {
+ ext3_msg(sb, KERN_ERR, "Invalid gid value %d", option);
+ return 0;
+ }
+ sbi->s_resgid = gid;
break;
case Opt_sb:
/* handled by get_sb_block() instead of here */
@@ -971,10 +1063,12 @@ static int parse_options (char *options, struct super_block *sb,
set_opt (sbi->s_mount_opt, DEBUG);
break;
case Opt_oldalloc:
- set_opt (sbi->s_mount_opt, OLDALLOC);
+ ext3_msg(sb, KERN_WARNING,
+ "Ignoring deprecated oldalloc option");
break;
case Opt_orlov:
- clear_opt (sbi->s_mount_opt, OLDALLOC);
+ ext3_msg(sb, KERN_WARNING,
+ "Ignoring deprecated orlov option");
break;
#ifdef CONFIG_EXT3_FS_XATTR
case Opt_user_xattr:
@@ -1043,6 +1137,41 @@ static int parse_options (char *options, struct super_block *sb,
return 0;
*journal_devnum = option;
break;
+ case Opt_journal_path:
+ if (is_remount) {
+ ext3_msg(sb, KERN_ERR, "error: cannot specify "
+ "journal on remount");
+ return 0;
+ }
+
+ journal_path = match_strdup(&args[0]);
+ if (!journal_path) {
+ ext3_msg(sb, KERN_ERR, "error: could not dup "
+ "journal device string");
+ return 0;
+ }
+
+ error = kern_path(journal_path, LOOKUP_FOLLOW, &path);
+ if (error) {
+ ext3_msg(sb, KERN_ERR, "error: could not find "
+ "journal device path: error %d", error);
+ kfree(journal_path);
+ return 0;
+ }
+
+ journal_inode = path.dentry->d_inode;
+ if (!S_ISBLK(journal_inode->i_mode)) {
+ ext3_msg(sb, KERN_ERR, "error: journal path %s "
+ "is not a block device", journal_path);
+ path_put(&path);
+ kfree(journal_path);
+ return 0;
+ }
+
+ *journal_devnum = new_encode_dev(journal_inode->i_rdev);
+ path_put(&path);
+ kfree(journal_path);
+ break;
case Opt_noload:
set_opt (sbi->s_mount_opt, NOLOAD);
break;
@@ -1065,20 +1194,19 @@ static int parse_options (char *options, struct super_block *sb,
data_opt = EXT3_MOUNT_WRITEBACK_DATA;
datacheck:
if (is_remount) {
- if ((sbi->s_mount_opt & EXT3_MOUNT_DATA_FLAGS)
- == data_opt)
+ if (test_opt(sb, DATA_FLAGS) == data_opt)
break;
ext3_msg(sb, KERN_ERR,
"error: cannot change "
"data mode on remount. The filesystem "
"is mounted in data=%s mode and you "
"try to remount it in data=%s mode.",
- data_mode_string(sbi->s_mount_opt &
- EXT3_MOUNT_DATA_FLAGS),
+ data_mode_string(test_opt(sb,
+ DATA_FLAGS)),
data_mode_string(data_opt));
return 0;
} else {
- sbi->s_mount_opt &= ~EXT3_MOUNT_DATA_FLAGS;
+ clear_opt(sbi->s_mount_opt, DATA_FLAGS);
sbi->s_mount_opt |= data_opt;
}
break;
@@ -1090,62 +1218,20 @@ static int parse_options (char *options, struct super_block *sb,
break;
#ifdef CONFIG_QUOTA
case Opt_usrjquota:
- qtype = USRQUOTA;
- goto set_qf_name;
- case Opt_grpjquota:
- qtype = GRPQUOTA;
-set_qf_name:
- if (sb_any_quota_loaded(sb) &&
- !sbi->s_qf_names[qtype]) {
- ext3_msg(sb, KERN_ERR,
- "error: cannot change journaled "
- "quota options when quota turned on.");
- return 0;
- }
- qname = match_strdup(&args[0]);
- if (!qname) {
- ext3_msg(sb, KERN_ERR,
- "error: not enough memory for "
- "storing quotafile name.");
+ if (!set_qf_name(sb, USRQUOTA, &args[0]))
return 0;
- }
- if (sbi->s_qf_names[qtype] &&
- strcmp(sbi->s_qf_names[qtype], qname)) {
- ext3_msg(sb, KERN_ERR,
- "error: %s quota file already "
- "specified.", QTYPE2NAME(qtype));
- kfree(qname);
- return 0;
- }
- sbi->s_qf_names[qtype] = qname;
- if (strchr(sbi->s_qf_names[qtype], '/')) {
- ext3_msg(sb, KERN_ERR,
- "error: quotafile must be on "
- "filesystem root.");
- kfree(sbi->s_qf_names[qtype]);
- sbi->s_qf_names[qtype] = NULL;
+ break;
+ case Opt_grpjquota:
+ if (!set_qf_name(sb, GRPQUOTA, &args[0]))
return 0;
- }
- set_opt(sbi->s_mount_opt, QUOTA);
break;
case Opt_offusrjquota:
- qtype = USRQUOTA;
- goto clear_qf_name;
+ if (!clear_qf_name(sb, USRQUOTA))
+ return 0;
+ break;
case Opt_offgrpjquota:
- qtype = GRPQUOTA;
-clear_qf_name:
- if (sb_any_quota_loaded(sb) &&
- sbi->s_qf_names[qtype]) {
- ext3_msg(sb, KERN_ERR, "error: cannot change "
- "journaled quota options when "
- "quota turned on.");
+ if (!clear_qf_name(sb, GRPQUOTA))
return 0;
- }
- /*
- * The space will be released later when all options
- * are confirmed to be correct
- */
- sbi->s_qf_names[qtype] = NULL;
break;
case Opt_jqfmt_vfsold:
qfmt = QFMT_VFS_OLD;
@@ -1208,9 +1294,15 @@ set_qf_format:
case Opt_abort:
set_opt(sbi->s_mount_opt, ABORT);
break;
+ case Opt_nobarrier:
+ clear_opt(sbi->s_mount_opt, BARRIER);
+ break;
case Opt_barrier:
- if (match_int(&args[0], &option))
- return 0;
+ if (args[0].from) {
+ if (match_int(&args[0], &option))
+ return 0;
+ } else
+ option = 1; /* No argument, default to 1 */
if (option)
set_opt(sbi->s_mount_opt, BARRIER);
else
@@ -1230,10 +1322,12 @@ set_qf_format:
*n_blocks_count = option;
break;
case Opt_nobh:
- set_opt(sbi->s_mount_opt, NOBH);
+ ext3_msg(sb, KERN_WARNING,
+ "warning: ignoring deprecated nobh option");
break;
case Opt_bh:
- clear_opt(sbi->s_mount_opt, NOBH);
+ ext3_msg(sb, KERN_WARNING,
+ "warning: ignoring deprecated bh option");
break;
default:
ext3_msg(sb, KERN_ERR,
@@ -1244,18 +1338,12 @@ set_qf_format:
}
#ifdef CONFIG_QUOTA
if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
- if ((sbi->s_mount_opt & EXT3_MOUNT_USRQUOTA) &&
- sbi->s_qf_names[USRQUOTA])
+ if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
clear_opt(sbi->s_mount_opt, USRQUOTA);
-
- if ((sbi->s_mount_opt & EXT3_MOUNT_GRPQUOTA) &&
- sbi->s_qf_names[GRPQUOTA])
+ if (test_opt(sb, GRPQUOTA) && sbi->s_qf_names[GRPQUOTA])
clear_opt(sbi->s_mount_opt, GRPQUOTA);
- if ((sbi->s_qf_names[USRQUOTA] &&
- (sbi->s_mount_opt & EXT3_MOUNT_GRPQUOTA)) ||
- (sbi->s_qf_names[GRPQUOTA] &&
- (sbi->s_mount_opt & EXT3_MOUNT_USRQUOTA))) {
+ if (test_opt(sb, GRPQUOTA) || test_opt(sb, USRQUOTA)) {
ext3_msg(sb, KERN_ERR, "error: old and new quota "
"format mixing.");
return 0;
@@ -1300,9 +1388,9 @@ static int ext3_setup_super(struct super_block *sb, struct ext3_super_block *es,
ext3_msg(sb, KERN_WARNING,
"warning: mounting fs with errors, "
"running e2fsck is recommended");
- else if ((__s16) le16_to_cpu(es->s_max_mnt_count) >= 0 &&
+ else if ((__s16) le16_to_cpu(es->s_max_mnt_count) > 0 &&
le16_to_cpu(es->s_mnt_count) >=
- (unsigned short) (__s16) le16_to_cpu(es->s_max_mnt_count))
+ le16_to_cpu(es->s_max_mnt_count))
ext3_msg(sb, KERN_WARNING,
"warning: maximal mount count reached, "
"running e2fsck is recommended");
@@ -1319,7 +1407,7 @@ static int ext3_setup_super(struct super_block *sb, struct ext3_super_block *es,
valid forever! :) */
es->s_state &= cpu_to_le16(~EXT3_VALID_FS);
#endif
- if (!(__s16) le16_to_cpu(es->s_max_mnt_count))
+ if (!le16_to_cpu(es->s_max_mnt_count))
es->s_max_mnt_count = cpu_to_le16(EXT3_DFL_MAX_MNT_COUNT);
le16_add_cpu(&es->s_mnt_count, 1);
es->s_mtime = cpu_to_le32(get_seconds());
@@ -1343,6 +1431,7 @@ static int ext3_setup_super(struct super_block *sb, struct ext3_super_block *es,
} else {
ext3_msg(sb, KERN_INFO, "using internal journal");
}
+ cleancache_init_fs(sb);
return res;
}
@@ -1440,11 +1529,20 @@ static void ext3_orphan_cleanup (struct super_block * sb,
return;
}
+ /* Check if feature set allows readwrite operations */
+ if (EXT3_HAS_RO_COMPAT_FEATURE(sb, ~EXT3_FEATURE_RO_COMPAT_SUPP)) {
+ ext3_msg(sb, KERN_INFO, "Skipping orphan cleanup due to "
+ "unknown ROCOMPAT features");
+ return;
+ }
+
if (EXT3_SB(sb)->s_mount_state & EXT3_ERROR_FS) {
- if (es->s_last_orphan)
+ /* don't clear list on RO mount w/ errors */
+ if (es->s_last_orphan && !(s_flags & MS_RDONLY)) {
jbd_debug(1, "Errors on filesystem, "
"clearing orphan list.\n");
- es->s_last_orphan = 0;
+ es->s_last_orphan = 0;
+ }
jbd_debug(1, "Skipping orphan recovery on fs with errors.\n");
return;
}
@@ -1478,7 +1576,7 @@ static void ext3_orphan_cleanup (struct super_block * sb,
}
list_add(&EXT3_I(inode)->i_orphan, &EXT3_SB(sb)->s_orphan);
- vfs_dq_init(inode);
+ dquot_initialize(inode);
if (inode->i_nlink) {
printk(KERN_DEBUG
"%s: truncating inode %lu to %Ld bytes\n",
@@ -1510,7 +1608,7 @@ static void ext3_orphan_cleanup (struct super_block * sb,
/* Turn quotas off */
for (i = 0; i < MAXQUOTAS; i++) {
if (sb_dqopt(sb)->files[i])
- vfs_quota_off(sb, i, 0);
+ dquot_quota_off(sb, i);
}
#endif
sb->s_flags = s_flags; /* Restore MS_RDONLY status */
@@ -1616,13 +1714,8 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
return -ENOMEM;
}
sb->s_fs_info = sbi;
- sbi->s_mount_opt = 0;
- sbi->s_resuid = EXT3_DEF_RESUID;
- sbi->s_resgid = EXT3_DEF_RESGID;
sbi->s_sb_block = sb_block;
- unlock_kernel();
-
blocksize = sb_min_blocksize(sb, EXT3_MIN_BLOCK_SIZE);
if (!blocksize) {
ext3_msg(sb, KERN_ERR, "error: unable to set blocksize");
@@ -1648,7 +1741,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
* Note: s_es must be initialized as soon as possible because
* some ext3 macro-instructions depend on its value
*/
- es = (struct ext3_super_block *) (((char *)bh->b_data) + offset);
+ es = (struct ext3_super_block *) (bh->b_data + offset);
sbi->s_es = es;
sb->s_magic = le16_to_cpu(es->s_magic);
if (sb->s_magic != EXT3_SUPER_MAGIC)
@@ -1671,11 +1764,11 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
set_opt(sbi->s_mount_opt, POSIX_ACL);
#endif
if ((def_mount_opts & EXT3_DEFM_JMODE) == EXT3_DEFM_JMODE_DATA)
- sbi->s_mount_opt |= EXT3_MOUNT_JOURNAL_DATA;
+ set_opt(sbi->s_mount_opt, JOURNAL_DATA);
else if ((def_mount_opts & EXT3_DEFM_JMODE) == EXT3_DEFM_JMODE_ORDERED)
- sbi->s_mount_opt |= EXT3_MOUNT_ORDERED_DATA;
+ set_opt(sbi->s_mount_opt, ORDERED_DATA);
else if ((def_mount_opts & EXT3_DEFM_JMODE) == EXT3_DEFM_JMODE_WBACK)
- sbi->s_mount_opt |= EXT3_MOUNT_WRITEBACK_DATA;
+ set_opt(sbi->s_mount_opt, WRITEBACK_DATA);
if (le16_to_cpu(sbi->s_es->s_errors) == EXT3_ERRORS_PANIC)
set_opt(sbi->s_mount_opt, ERRORS_PANIC);
@@ -1684,9 +1777,11 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
else
set_opt(sbi->s_mount_opt, ERRORS_RO);
- sbi->s_resuid = le16_to_cpu(es->s_def_resuid);
- sbi->s_resgid = le16_to_cpu(es->s_def_resgid);
+ sbi->s_resuid = make_kuid(&init_user_ns, le16_to_cpu(es->s_def_resuid));
+ sbi->s_resgid = make_kgid(&init_user_ns, le16_to_cpu(es->s_def_resgid));
+ /* enable barriers by default */
+ set_opt(sbi->s_mount_opt, BARRIER);
set_opt(sbi->s_mount_opt, RESERVATION);
if (!parse_options ((char *) data, sb, &journal_inum, &journal_devnum,
@@ -1694,7 +1789,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
goto failed_mount;
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
- ((sbi->s_mount_opt & EXT3_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+ (test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
if (le32_to_cpu(es->s_rev_level) == EXT3_GOOD_OLD_REV &&
(EXT3_HAS_COMPAT_FEATURE(sb, ~0U) ||
@@ -1759,7 +1854,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
"error: can't read superblock on 2nd try");
goto failed_mount;
}
- es = (struct ext3_super_block *)(((char *)bh->b_data) + offset);
+ es = (struct ext3_super_block *)(bh->b_data + offset);
sbi->s_es = es;
if (es->s_magic != cpu_to_le16(EXT3_SUPER_MAGIC)) {
ext3_msg(sb, KERN_ERR,
@@ -1843,13 +1938,15 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
goto failed_mount;
}
- if (le32_to_cpu(es->s_blocks_count) >
- (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) {
+ err = generic_check_addressable(sb->s_blocksize_bits,
+ le32_to_cpu(es->s_blocks_count));
+ if (err) {
ext3_msg(sb, KERN_ERR,
"error: filesystem is too large to mount safely");
if (sizeof(sector_t) < 8)
ext3_msg(sb, KERN_ERR,
"error: CONFIG_LBDAF not enabled");
+ ret = err;
goto failed_mount;
}
@@ -1858,13 +1955,13 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
sbi->s_groups_count = ((le32_to_cpu(es->s_blocks_count) -
le32_to_cpu(es->s_first_data_block) - 1)
/ EXT3_BLOCKS_PER_GROUP(sb)) + 1;
- db_count = (sbi->s_groups_count + EXT3_DESC_PER_BLOCK(sb) - 1) /
- EXT3_DESC_PER_BLOCK(sb);
+ db_count = DIV_ROUND_UP(sbi->s_groups_count, EXT3_DESC_PER_BLOCK(sb));
sbi->s_group_desc = kmalloc(db_count * sizeof (struct buffer_head *),
GFP_KERNEL);
if (sbi->s_group_desc == NULL) {
ext3_msg(sb, KERN_ERR,
"error: not enough memory");
+ ret = -ENOMEM;
goto failed_mount;
}
@@ -1889,21 +1986,6 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
get_random_bytes(&sbi->s_next_generation, sizeof(u32));
spin_lock_init(&sbi->s_next_gen_lock);
- err = percpu_counter_init(&sbi->s_freeblocks_counter,
- ext3_count_free_blocks(sb));
- if (!err) {
- err = percpu_counter_init(&sbi->s_freeinodes_counter,
- ext3_count_free_inodes(sb));
- }
- if (!err) {
- err = percpu_counter_init(&sbi->s_dirs_counter,
- ext3_count_dirs(sb));
- }
- if (err) {
- ext3_msg(sb, KERN_ERR, "error: insufficient memory");
- goto failed_mount3;
- }
-
/* per fileystem reservation list head & lock */
spin_lock_init(&sbi->s_rsv_window_lock);
sbi->s_rsv_window_root = RB_ROOT;
@@ -1927,6 +2009,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
sb->s_qcop = &ext3_qctl_operations;
sb->dq_op = &ext3_quota_operations;
#endif
+ memcpy(sb->s_uuid, es->s_uuid, sizeof(es->s_uuid));
INIT_LIST_HEAD(&sbi->s_orphan); /* unlinked but open files */
mutex_init(&sbi->s_orphan_lock);
mutex_init(&sbi->s_resize_lock);
@@ -1944,15 +2027,30 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
if (!test_opt(sb, NOLOAD) &&
EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
if (ext3_load_journal(sb, es, journal_devnum))
- goto failed_mount3;
+ goto failed_mount2;
} else if (journal_inum) {
if (ext3_create_journal(sb, es, journal_inum))
- goto failed_mount3;
+ goto failed_mount2;
} else {
if (!silent)
ext3_msg(sb, KERN_ERR,
"error: no journal found. "
"mounting ext3 over ext2?");
+ goto failed_mount2;
+ }
+ err = percpu_counter_init(&sbi->s_freeblocks_counter,
+ ext3_count_free_blocks(sb));
+ if (!err) {
+ err = percpu_counter_init(&sbi->s_freeinodes_counter,
+ ext3_count_free_inodes(sb));
+ }
+ if (!err) {
+ err = percpu_counter_init(&sbi->s_dirs_counter,
+ ext3_count_dirs(sb));
+ }
+ if (err) {
+ ext3_msg(sb, KERN_ERR, "error: insufficient memory");
+ ret = err;
goto failed_mount3;
}
@@ -1977,20 +2075,12 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
ext3_msg(sb, KERN_ERR,
"error: journal does not support "
"requested data journaling mode");
- goto failed_mount4;
+ goto failed_mount3;
}
default:
break;
}
- if (test_opt(sb, NOBH)) {
- if (!(test_opt(sb, DATA_FLAGS) == EXT3_MOUNT_WRITEBACK_DATA)) {
- ext3_msg(sb, KERN_WARNING,
- "warning: ignoring nobh option - "
- "it is supported only with writeback mode");
- clear_opt(sbi->s_mount_opt, NOBH);
- }
- }
/*
* The journal_load will have done any necessary log recovery,
* so we can safely mount the rest of the filesystem now.
@@ -2000,35 +2090,35 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
if (IS_ERR(root)) {
ext3_msg(sb, KERN_ERR, "error: get root inode failed");
ret = PTR_ERR(root);
- goto failed_mount4;
+ goto failed_mount3;
}
if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
iput(root);
ext3_msg(sb, KERN_ERR, "error: corrupt root inode, run e2fsck");
- goto failed_mount4;
+ goto failed_mount3;
}
- sb->s_root = d_alloc_root(root);
+ sb->s_root = d_make_root(root);
if (!sb->s_root) {
ext3_msg(sb, KERN_ERR, "error: get root dentry failed");
- iput(root);
ret = -ENOMEM;
- goto failed_mount4;
+ goto failed_mount3;
}
- ext3_setup_super (sb, es, sb->s_flags & MS_RDONLY);
+ if (ext3_setup_super(sb, es, sb->s_flags & MS_RDONLY))
+ sb->s_flags |= MS_RDONLY;
EXT3_SB(sb)->s_mount_state |= EXT3_ORPHAN_FS;
ext3_orphan_cleanup(sb, es);
EXT3_SB(sb)->s_mount_state &= ~EXT3_ORPHAN_FS;
- if (needs_recovery)
+ if (needs_recovery) {
+ ext3_mark_recovery_complete(sb, es);
ext3_msg(sb, KERN_INFO, "recovery complete");
- ext3_mark_recovery_complete(sb, es);
+ }
ext3_msg(sb, KERN_INFO, "mounted filesystem with %s data mode",
test_opt(sb,DATA_FLAGS) == EXT3_MOUNT_JOURNAL_DATA ? "journal":
test_opt(sb,DATA_FLAGS) == EXT3_MOUNT_ORDERED_DATA ? "ordered":
"writeback");
- lock_kernel();
return 0;
cantfind_ext3:
@@ -2038,12 +2128,11 @@ cantfind_ext3:
sb->s_id);
goto failed_mount;
-failed_mount4:
- journal_destroy(sbi->s_journal);
failed_mount3:
percpu_counter_destroy(&sbi->s_freeblocks_counter);
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
+ journal_destroy(sbi->s_journal);
failed_mount2:
for (i = 0; i < db_count; i++)
brelse(sbi->s_group_desc[i]);
@@ -2059,7 +2148,6 @@ out_fail:
sb->s_fs_info = NULL;
kfree(sbi->s_blockgroup_lock);
kfree(sbi);
- lock_kernel();
return ret;
}
@@ -2148,13 +2236,6 @@ static journal_t *ext3_get_dev_journal(struct super_block *sb,
if (bdev == NULL)
return NULL;
- if (bd_claim(bdev, sb)) {
- ext3_msg(sb, KERN_ERR,
- "error: failed to claim external journal device");
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
- return NULL;
- }
-
blocksize = sb->s_blocksize;
hblock = bdev_logical_block_size(bdev);
if (blocksize < hblock) {
@@ -2172,7 +2253,7 @@ static journal_t *ext3_get_dev_journal(struct super_block *sb,
goto out_bdev;
}
- es = (struct ext3_super_block *) (((char *)bh->b_data) + offset);
+ es = (struct ext3_super_block *) (bh->b_data + offset);
if ((le16_to_cpu(es->s_magic) != EXT3_SUPER_MAGIC) ||
!(le32_to_cpu(es->s_feature_incompat) &
EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
@@ -2200,11 +2281,11 @@ static journal_t *ext3_get_dev_journal(struct super_block *sb,
goto out_bdev;
}
journal->j_private = sb;
- ll_rw_block(READ, 1, &journal->j_sb_buffer);
- wait_on_buffer(journal->j_sb_buffer);
- if (!buffer_uptodate(journal->j_sb_buffer)) {
- ext3_msg(sb, KERN_ERR, "I/O error on journal device");
- goto out_journal;
+ if (!bh_uptodate_or_lock(journal->j_sb_buffer)) {
+ if (bh_submit_read(journal->j_sb_buffer)) {
+ ext3_msg(sb, KERN_ERR, "I/O error on journal device");
+ goto out_journal;
+ }
}
if (be32_to_cpu(journal->j_superblock->s_nr_users) != 1) {
ext3_msg(sb, KERN_ERR,
@@ -2277,6 +2358,9 @@ static int ext3_load_journal(struct super_block *sb,
return -EINVAL;
}
+ if (!(journal->j_flags & JFS_BARRIER))
+ printk(KERN_INFO "EXT3-fs: barriers not enabled\n");
+
if (!really_read_only && test_opt(sb, UPDATE_JOURNAL)) {
err = journal_update_format(journal);
if (err) {
@@ -2300,7 +2384,7 @@ static int ext3_load_journal(struct super_block *sb,
EXT3_SB(sb)->s_journal = journal;
ext3_clear_journal_err(sb, es);
- if (journal_devnum &&
+ if (!really_read_only && journal_devnum &&
journal_devnum != le32_to_cpu(es->s_journal_dev)) {
es->s_journal_dev = cpu_to_le32(journal_devnum);
@@ -2362,6 +2446,21 @@ static int ext3_commit_super(struct super_block *sb,
if (!sbh)
return error;
+
+ if (buffer_write_io_error(sbh)) {
+ /*
+ * Oh, dear. A previous attempt to write the
+ * superblock failed. This could happen because the
+ * USB device was yanked out. Or it could happen to
+ * be a transient write error and maybe the block will
+ * be remapped. Nothing we can do but to retry the
+ * write and hope for the best.
+ */
+ ext3_msg(sb, KERN_ERR, "previous I/O error to "
+ "superblock detected");
+ clear_buffer_write_io_error(sbh);
+ set_buffer_uptodate(sbh);
+ }
/*
* If the file system is mounted read-only, don't update the
* superblock write time. This avoids updating the superblock
@@ -2378,8 +2477,15 @@ static int ext3_commit_super(struct super_block *sb,
es->s_free_inodes_count = cpu_to_le32(ext3_count_free_inodes(sb));
BUFFER_TRACE(sbh, "marking dirty");
mark_buffer_dirty(sbh);
- if (sync)
+ if (sync) {
error = sync_dirty_buffer(sbh);
+ if (buffer_write_io_error(sbh)) {
+ ext3_msg(sb, KERN_ERR, "I/O error while writing "
+ "superblock");
+ clear_buffer_write_io_error(sbh);
+ set_buffer_uptodate(sbh);
+ }
+ }
return error;
}
@@ -2466,6 +2572,12 @@ static int ext3_sync_fs(struct super_block *sb, int wait)
{
tid_t target;
+ trace_ext3_sync_fs(sb, wait);
+ /*
+ * Writeback quota in non-journalled quota case - journalled quota has
+ * no dirty dquots
+ */
+ dquot_writeback_dquots(sb, -1);
if (journal_start_commit(EXT3_SB(sb)->s_journal, &target)) {
if (wait)
log_wait_commit(EXT3_SB(sb)->s_journal, target);
@@ -2516,11 +2628,9 @@ out:
static int ext3_unfreeze(struct super_block *sb)
{
if (!(sb->s_flags & MS_RDONLY)) {
- lock_super(sb);
/* Reser the needs_recovery flag before the fs is unlocked. */
EXT3_SET_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
ext3_commit_super(sb, EXT3_SB(sb)->s_es, 1);
- unlock_super(sb);
journal_unlock_updates(EXT3_SB(sb)->s_journal);
}
return 0;
@@ -2533,15 +2643,15 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
ext3_fsblk_t n_blocks_count = 0;
unsigned long old_sb_flags;
struct ext3_mount_options old_opts;
+ int enable_quota = 0;
int err;
#ifdef CONFIG_QUOTA
int i;
#endif
- lock_kernel();
+ sync_filesystem(sb);
/* Store the original options */
- lock_super(sb);
old_sb_flags = sb->s_flags;
old_opts.s_mount_opt = sbi->s_mount_opt;
old_opts.s_resuid = sbi->s_resuid;
@@ -2550,7 +2660,18 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
#ifdef CONFIG_QUOTA
old_opts.s_jquota_fmt = sbi->s_jquota_fmt;
for (i = 0; i < MAXQUOTAS; i++)
- old_opts.s_qf_names[i] = sbi->s_qf_names[i];
+ if (sbi->s_qf_names[i]) {
+ old_opts.s_qf_names[i] = kstrdup(sbi->s_qf_names[i],
+ GFP_KERNEL);
+ if (!old_opts.s_qf_names[i]) {
+ int j;
+
+ for (j = 0; j < i; j++)
+ kfree(old_opts.s_qf_names[j]);
+ return -ENOMEM;
+ }
+ } else
+ old_opts.s_qf_names[i] = NULL;
#endif
/*
@@ -2561,11 +2682,11 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
goto restore_opts;
}
- if (sbi->s_mount_opt & EXT3_MOUNT_ABORT)
+ if (test_opt(sb, ABORT))
ext3_abort(sb, __func__, "Abort forced by user");
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
- ((sbi->s_mount_opt & EXT3_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+ (test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
es = sbi->s_es;
@@ -2573,12 +2694,16 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY) ||
n_blocks_count > le32_to_cpu(es->s_blocks_count)) {
- if (sbi->s_mount_opt & EXT3_MOUNT_ABORT) {
+ if (test_opt(sb, ABORT)) {
err = -EROFS;
goto restore_opts;
}
if (*flags & MS_RDONLY) {
+ err = dquot_suspend(sb, -1);
+ if (err < 0)
+ goto restore_opts;
+
/*
* First of all, the unconditional stuff we have to do
* to disable replay of the journal when we next remount
@@ -2610,13 +2735,13 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
/*
* If we have an unprocessed orphan list hanging
* around from a previously readonly bdev mount,
- * require a full umount/remount for now.
+ * require a full umount & mount for now.
*/
if (es->s_last_orphan) {
ext3_msg(sb, KERN_WARNING, "warning: couldn't "
"remount RDWR because of unprocessed "
"orphan inode list. Please "
- "umount/remount instead.");
+ "umount & mount instead.");
err = -EINVAL;
goto restore_opts;
}
@@ -2633,17 +2758,16 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
goto restore_opts;
if (!ext3_setup_super (sb, es, 0))
sb->s_flags &= ~MS_RDONLY;
+ enable_quota = 1;
}
}
#ifdef CONFIG_QUOTA
/* Release old quota file names */
for (i = 0; i < MAXQUOTAS; i++)
- if (old_opts.s_qf_names[i] &&
- old_opts.s_qf_names[i] != sbi->s_qf_names[i])
- kfree(old_opts.s_qf_names[i]);
+ kfree(old_opts.s_qf_names[i]);
#endif
- unlock_super(sb);
- unlock_kernel();
+ if (enable_quota)
+ dquot_resume(sb, -1);
return 0;
restore_opts:
sb->s_flags = old_sb_flags;
@@ -2654,14 +2778,10 @@ restore_opts:
#ifdef CONFIG_QUOTA
sbi->s_jquota_fmt = old_opts.s_jquota_fmt;
for (i = 0; i < MAXQUOTAS; i++) {
- if (sbi->s_qf_names[i] &&
- old_opts.s_qf_names[i] != sbi->s_qf_names[i])
- kfree(sbi->s_qf_names[i]);
+ kfree(sbi->s_qf_names[i]);
sbi->s_qf_names[i] = old_opts.s_qf_names[i];
}
#endif
- unlock_super(sb);
- unlock_kernel();
return err;
}
@@ -2707,6 +2827,10 @@ static int ext3_statfs (struct dentry * dentry, struct kstatfs * buf)
* bitmap, and an inode table.
*/
overhead += ngroups * (2 + sbi->s_itb_per_group);
+
+ /* Add the journal blocks as well */
+ overhead += sbi->s_journal->j_maxlen;
+
sbi->s_overhead_last = overhead;
smp_wmb();
sbi->s_blocks_last = le32_to_cpu(es->s_blocks_count);
@@ -2734,7 +2858,7 @@ static int ext3_statfs (struct dentry * dentry, struct kstatfs * buf)
* Process 1 Process 2
* ext3_create() quota_sync()
* journal_start() write_dquot()
- * vfs_dq_init() down(dqio_mutex)
+ * dquot_initialize() down(dqio_mutex)
* down(dqio_mutex) journal_start()
*
*/
@@ -2743,7 +2867,7 @@ static int ext3_statfs (struct dentry * dentry, struct kstatfs * buf)
static inline struct inode *dquot_to_inode(struct dquot *dquot)
{
- return sb_dqopt(dquot->dq_sb)->files[dquot->dq_type];
+ return sb_dqopt(dquot->dq_sb)->files[dquot->dq_id.type];
}
static int ext3_write_dquot(struct dquot *dquot)
@@ -2833,38 +2957,28 @@ static int ext3_write_info(struct super_block *sb, int type)
*/
static int ext3_quota_on_mount(struct super_block *sb, int type)
{
- return vfs_quota_on_mount(sb, EXT3_SB(sb)->s_qf_names[type],
- EXT3_SB(sb)->s_jquota_fmt, type);
+ return dquot_quota_on_mount(sb, EXT3_SB(sb)->s_qf_names[type],
+ EXT3_SB(sb)->s_jquota_fmt, type);
}
/*
* Standard function to be called on quota_on
*/
static int ext3_quota_on(struct super_block *sb, int type, int format_id,
- char *name, int remount)
+ struct path *path)
{
int err;
- struct path path;
if (!test_opt(sb, QUOTA))
return -EINVAL;
- /* When remounting, no checks are needed and in fact, name is NULL */
- if (remount)
- return vfs_quota_on(sb, type, format_id, name, remount);
-
- err = kern_path(name, LOOKUP_FOLLOW, &path);
- if (err)
- return err;
/* Quotafile not on the same filesystem? */
- if (path.mnt->mnt_sb != sb) {
- path_put(&path);
+ if (path->dentry->d_sb != sb)
return -EXDEV;
- }
/* Journaling quota? */
if (EXT3_SB(sb)->s_qf_names[type]) {
/* Quotafile not of fs root? */
- if (path.dentry->d_parent != sb->s_root)
+ if (path->dentry->d_parent != sb->s_root)
ext3_msg(sb, KERN_WARNING,
"warning: Quota file not on filesystem root. "
"Journaled quota will not work.");
@@ -2874,7 +2988,7 @@ static int ext3_quota_on(struct super_block *sb, int type, int format_id,
* When we journal data on quota file, we have to flush journal to see
* all updates to the file when we bypass pagecache...
*/
- if (ext3_should_journal_data(path.dentry->d_inode)) {
+ if (ext3_should_journal_data(path->dentry->d_inode)) {
/*
* We don't need to lock updates but journal_flush() could
* otherwise be livelocked...
@@ -2882,20 +2996,16 @@ static int ext3_quota_on(struct super_block *sb, int type, int format_id,
journal_lock_updates(EXT3_SB(sb)->s_journal);
err = journal_flush(EXT3_SB(sb)->s_journal);
journal_unlock_updates(EXT3_SB(sb)->s_journal);
- if (err) {
- path_put(&path);
+ if (err)
return err;
- }
}
- err = vfs_quota_on_path(sb, type, format_id, &path);
- path_put(&path);
- return err;
+ return dquot_quota_on(sb, type, format_id, path);
}
/* 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 ext3_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off)
@@ -2942,9 +3052,7 @@ static ssize_t ext3_quota_write(struct super_block *sb, int type,
sector_t blk = off >> EXT3_BLOCK_SIZE_BITS(sb);
int err = 0;
int offset = off & (sb->s_blocksize - 1);
- int tocopy;
int journal_quota = EXT3_SB(sb)->s_qf_names[type] != NULL;
- size_t towrite = len;
struct buffer_head *bh;
handle_t *handle = journal_current_handle();
@@ -2955,70 +3063,68 @@ static ssize_t ext3_quota_write(struct super_block *sb, int type,
(unsigned long long)off, (unsigned long long)len);
return -EIO;
}
- mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
- while (towrite > 0) {
- tocopy = sb->s_blocksize - offset < towrite ?
- sb->s_blocksize - offset : towrite;
- bh = ext3_bread(handle, inode, blk, 1, &err);
- if (!bh)
+
+ /*
+ * Since we account only one data block in transaction credits,
+ * then it is impossible to cross a block boundary.
+ */
+ if (sb->s_blocksize - offset < len) {
+ ext3_msg(sb, KERN_WARNING, "Quota write (off=%llu, len=%llu)"
+ " cancelled because not block aligned",
+ (unsigned long long)off, (unsigned long long)len);
+ return -EIO;
+ }
+ bh = ext3_bread(handle, inode, blk, 1, &err);
+ if (!bh)
+ goto out;
+ if (journal_quota) {
+ err = ext3_journal_get_write_access(handle, bh);
+ if (err) {
+ brelse(bh);
goto out;
- if (journal_quota) {
- err = ext3_journal_get_write_access(handle, bh);
- if (err) {
- brelse(bh);
- goto out;
- }
- }
- lock_buffer(bh);
- memcpy(bh->b_data+offset, data, tocopy);
- flush_dcache_page(bh->b_page);
- unlock_buffer(bh);
- if (journal_quota)
- err = ext3_journal_dirty_metadata(handle, bh);
- else {
- /* Always do at least ordered writes for quotas */
- err = ext3_journal_dirty_data(handle, bh);
- mark_buffer_dirty(bh);
}
- brelse(bh);
- if (err)
- goto out;
- offset = 0;
- towrite -= tocopy;
- data += tocopy;
- blk++;
}
+ lock_buffer(bh);
+ memcpy(bh->b_data+offset, data, len);
+ flush_dcache_page(bh->b_page);
+ unlock_buffer(bh);
+ if (journal_quota)
+ err = ext3_journal_dirty_metadata(handle, bh);
+ else {
+ /* Always do at least ordered writes for quotas */
+ err = ext3_journal_dirty_data(handle, bh);
+ mark_buffer_dirty(bh);
+ }
+ brelse(bh);
out:
- if (len == towrite) {
- mutex_unlock(&inode->i_mutex);
+ if (err)
return err;
- }
- if (inode->i_size < off+len-towrite) {
- i_size_write(inode, off+len-towrite);
+ if (inode->i_size < off + len) {
+ i_size_write(inode, off + len);
EXT3_I(inode)->i_disksize = inode->i_size;
}
inode->i_version++;
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
ext3_mark_inode_dirty(handle, inode);
- mutex_unlock(&inode->i_mutex);
- return len - towrite;
+ return len;
}
#endif
-static int ext3_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+static struct dentry *ext3_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, ext3_fill_super, mnt);
+ return mount_bdev(fs_type, flags, dev_name, data, ext3_fill_super);
}
static struct file_system_type ext3_fs_type = {
.owner = THIS_MODULE,
.name = "ext3",
- .get_sb = ext3_get_sb,
+ .mount = ext3_mount,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("ext3");
static int __init init_ext3_fs(void)
{
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 13:36:10 +0000