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Message-ID: <20140501231753.892.65406.stgit@birch.djwong.org>
Date: Thu, 01 May 2014 16:17:53 -0700
From: "Darrick J. Wong" <darrick.wong@...cle.com>
To: tytso@....edu, darrick.wong@...cle.com
Cc: linux-ext4@...r.kernel.org
Subject: [PATCH 5/5] ext4: enforce ext5 feature set and mount options
Having defined "ext5" to be a set of required features and mount
options, check that all the required featues are present and disable
all but a handful of mount options. See the e2fsprogs part of this
patch for the list of features and mount options that make up ext5.
Again, this is not a fork, just a way to tie some features together
and reduce our testing matrix.
Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
---
fs/ext4/ext4.h | 52 +++++++++++++++++
fs/ext4/super.c | 173 +++++++++++++++++++++++++++++++++++++++----------------
2 files changed, 176 insertions(+), 49 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index fde4a27..a19f826 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1575,6 +1575,58 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
EXT4_FEATURE_RO_COMPAT_QUOTA)
+/* ext5 features */
+#define EXT5_FEATURE_COMPAT_REQD_MASK (EXT4_FEATURE_COMPAT_RESIZE_INODE|\
+ EXT4_FEATURE_COMPAT_DIR_INDEX|\
+ EXT4_FEATURE_COMPAT_EXT_ATTR|\
+ EXT4_FEATURE_COMPAT_SPARSE_SUPER2)
+
+#define EXT5_FEATURE_COMPAT_REQD (EXT4_FEATURE_COMPAT_DIR_INDEX|\
+ EXT4_FEATURE_COMPAT_EXT_ATTR|\
+ EXT4_FEATURE_COMPAT_SPARSE_SUPER2)
+
+#define EXT5_FEATURE_INCOMPAT_REQD_MASK (EXT4_FEATURE_INCOMPAT_FILETYPE|\
+ EXT4_FEATURE_INCOMPAT_META_BG|\
+ EXT4_FEATURE_INCOMPAT_EXTENTS|\
+ EXT4_FEATURE_INCOMPAT_FLEX_BG|\
+ EXT4_FEATURE_INCOMPAT_64BIT|\
+ EXT4_FEATURE_INCOMPAT_INLINE_DATA)
+
+#define EXT5_FEATURE_INCOMPAT_REQD (EXT4_FEATURE_INCOMPAT_FILETYPE|\
+ EXT4_FEATURE_INCOMPAT_META_BG|\
+ EXT4_FEATURE_INCOMPAT_EXTENTS|\
+ EXT4_FEATURE_INCOMPAT_FLEX_BG|\
+ EXT4_FEATURE_INCOMPAT_64BIT|\
+ EXT4_FEATURE_INCOMPAT_INLINE_DATA)
+
+#define EXT5_FEATURE_RO_COMPAT_REQD_MASK (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER|\
+ EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
+ EXT4_FEATURE_RO_COMPAT_LARGE_FILE|\
+ EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
+ EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
+
+#define EXT5_FEATURE_RO_COMPAT_REQD (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER|\
+ EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
+ EXT4_FEATURE_RO_COMPAT_LARGE_FILE|\
+ EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
+ EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
+
+#define EXT5_DEF_MNTOPT_MASK (EXT4_DEFM_XATTR_USER|\
+ EXT4_DEFM_ACL|\
+ EXT4_DEFM_UID16|\
+ EXT4_DEFM_NOBARRIER|\
+ EXT4_DEFM_BLOCK_VALIDITY|\
+ EXT4_DEFM_NODELALLOC)
+
+#define EXT5_DEF_MNTOPT (EXT4_DEFM_XATTR_USER|\
+ EXT4_DEFM_ACL|\
+ EXT4_DEFM_BLOCK_VALIDITY)
+
+#define EXT5_MINOR_REV_LEVEL (2)
+
/*
* Default values for user and/or group using reserved blocks
*/
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 32967cb..508e78f 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -116,6 +116,17 @@ MODULE_ALIAS("ext3");
#define IS_EXT3_SB(sb) (0)
#endif
+static struct file_system_type ext5_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "ext5",
+ .mount = ext4_mount,
+ .kill_sb = kill_block_super,
+ .fs_flags = FS_REQUIRES_DEV,
+};
+MODULE_ALIAS_FS("ext5");
+MODULE_ALIAS("ext5");
+#define IS_EXT5_SB(sb) ((sb)->s_bdev->bd_holder == &ext5_fs_type)
+
static int ext4_verify_csum_type(struct super_block *sb,
struct ext4_super_block *es)
{
@@ -386,6 +397,24 @@ static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn)
* that error until we've noted it down and cleared it.
*/
+static int is_ext5_fs(struct super_block *sb)
+{
+ return (IS_EXT5_SB(sb) ||
+ le16_to_cpu(EXT4_SB(sb)->s_es->s_minor_rev_level) ==
+ EXT5_MINOR_REV_LEVEL);
+}
+
+static int ext4_level(struct super_block *sb)
+{
+ if (IS_EXT2_SB(sb))
+ return 2;
+ if (IS_EXT3_SB(sb))
+ return 3;
+ if (is_ext5_fs(sb))
+ return 5;
+ return 4;
+}
+
static void ext4_handle_error(struct super_block *sb)
{
if (sb->s_flags & MS_RDONLY)
@@ -408,8 +437,8 @@ static void ext4_handle_error(struct super_block *sb)
sb->s_flags |= MS_RDONLY;
}
if (test_opt(sb, ERRORS_PANIC))
- panic("EXT4-fs (device %s): panic forced after error\n",
- sb->s_id);
+ panic("EXT%d-fs (device %s): panic forced after error\n",
+ ext4_level(sb), sb->s_id);
}
#define ext4_error_ratelimit(sb) \
@@ -427,8 +456,9 @@ void __ext4_error(struct super_block *sb, const char *function,
vaf.fmt = fmt;
vaf.va = &args;
printk(KERN_CRIT
- "EXT4-fs error (device %s): %s:%d: comm %s: %pV\n",
- sb->s_id, function, line, current->comm, &vaf);
+ "EXT%d-fs error (device %s): %s:%d: comm %s: %pV\n",
+ ext4_level(sb), sb->s_id, function, line, current->comm,
+ &vaf);
va_end(args);
}
save_error_info(sb, function, line);
@@ -450,15 +480,17 @@ void __ext4_error_inode(struct inode *inode, const char *function,
vaf.fmt = fmt;
vaf.va = &args;
if (block)
- printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: "
+ printk(KERN_CRIT "EXT%d-fs error (device %s): %s:%d: "
"inode #%lu: block %llu: comm %s: %pV\n",
- inode->i_sb->s_id, function, line, inode->i_ino,
- block, current->comm, &vaf);
+ ext4_level(inode->i_sb), inode->i_sb->s_id,
+ function, line, inode->i_ino, block,
+ current->comm, &vaf);
else
- printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: "
+ printk(KERN_CRIT "EXT%d-fs error (device %s): %s:%d: "
"inode #%lu: comm %s: %pV\n",
- inode->i_sb->s_id, function, line, inode->i_ino,
- current->comm, &vaf);
+ ext4_level(inode->i_sb), inode->i_sb->s_id,
+ function, line, inode->i_ino, current->comm,
+ &vaf);
va_end(args);
}
save_error_info(inode->i_sb, function, line);
@@ -486,16 +518,18 @@ void __ext4_error_file(struct file *file, const char *function,
vaf.va = &args;
if (block)
printk(KERN_CRIT
- "EXT4-fs error (device %s): %s:%d: inode #%lu: "
+ "EXT%d-fs error (device %s): %s:%d: inode #%lu: "
"block %llu: comm %s: path %s: %pV\n",
- inode->i_sb->s_id, function, line, inode->i_ino,
- block, current->comm, path, &vaf);
+ ext4_level(inode->i_sb), inode->i_sb->s_id,
+ function, line, inode->i_ino, block,
+ current->comm, path, &vaf);
else
printk(KERN_CRIT
- "EXT4-fs error (device %s): %s:%d: inode #%lu: "
+ "EXT%d-fs error (device %s): %s:%d: inode #%lu: "
"comm %s: path %s: %pV\n",
- inode->i_sb->s_id, function, line, inode->i_ino,
- current->comm, path, &vaf);
+ ext4_level(inode->i_sb), inode->i_sb->s_id,
+ function, line, inode->i_ino, current->comm,
+ path, &vaf);
va_end(args);
}
save_error_info(inode->i_sb, function, line);
@@ -554,8 +588,8 @@ void __ext4_std_error(struct super_block *sb, const char *function,
if (ext4_error_ratelimit(sb)) {
errstr = ext4_decode_error(sb, errno, nbuf);
- printk(KERN_CRIT "EXT4-fs error (device %s) in %s:%d: %s\n",
- sb->s_id, function, line, errstr);
+ printk(KERN_CRIT "EXT%d-fs error (device %s) in %s:%d: %s\n",
+ ext4_level(sb), sb->s_id, function, line, errstr);
}
save_error_info(sb, function, line);
@@ -579,8 +613,8 @@ void __ext4_abort(struct super_block *sb, const char *function,
save_error_info(sb, function, line);
va_start(args, fmt);
- printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: ", sb->s_id,
- function, line);
+ printk(KERN_CRIT "EXT%d-fs error (device %s): %s:%d: ",
+ ext4_level(sb), sb->s_id, function, line);
vprintk(fmt, args);
printk("\n");
va_end(args);
@@ -599,7 +633,7 @@ void __ext4_abort(struct super_block *sb, const char *function,
save_error_info(sb, function, line);
}
if (test_opt(sb, ERRORS_PANIC))
- panic("EXT4-fs panic from previous error\n");
+ panic("EXT%d-fs panic from previous error\n", ext4_level(sb));
}
void __ext4_msg(struct super_block *sb,
@@ -614,7 +648,8 @@ void __ext4_msg(struct super_block *sb,
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
- printk("%sEXT4-fs (%s): %pV\n", prefix, sb->s_id, &vaf);
+ printk("%sEXT%d-fs (%s): %pV\n", prefix, ext4_level(sb), sb->s_id,
+ &vaf);
va_end(args);
}
@@ -631,8 +666,8 @@ void __ext4_warning(struct super_block *sb, const char *function,
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
- printk(KERN_WARNING "EXT4-fs warning (device %s): %s:%d: %pV\n",
- sb->s_id, function, line, &vaf);
+ printk(KERN_WARNING "EXT%d-fs warning (device %s): %s:%d: %pV\n",
+ ext4_level(sb), sb->s_id, function, line, &vaf);
va_end(args);
}
@@ -655,8 +690,8 @@ __acquires(bitlock)
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
- printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: group %u, ",
- sb->s_id, function, line, grp);
+ printk(KERN_CRIT "EXT%d-fs error (device %s): %s:%d: group %u, ",
+ ext4_level(sb), sb->s_id, function, line, grp);
if (ino)
printk(KERN_CONT "inode %lu: ", ino);
if (block)
@@ -1360,6 +1395,7 @@ static int clear_qf_name(struct super_block *sb, int qtype)
#define MOPT_NO_EXT3 0x0200
#define MOPT_EXT4_ONLY (MOPT_NO_EXT2 | MOPT_NO_EXT3)
#define MOPT_STRING 0x0400
+#define MOPT_EXT5_OPT 0x0800
static const struct mount_opts {
int token;
@@ -1370,27 +1406,27 @@ static const struct mount_opts {
{Opt_bsd_df, EXT4_MOUNT_MINIX_DF, MOPT_CLEAR},
{Opt_grpid, EXT4_MOUNT_GRPID, MOPT_SET},
{Opt_nogrpid, EXT4_MOUNT_GRPID, MOPT_CLEAR},
- {Opt_block_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_SET},
+ {Opt_block_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_EXT5_OPT | MOPT_SET},
{Opt_noblock_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_CLEAR},
{Opt_dioread_nolock, EXT4_MOUNT_DIOREAD_NOLOCK,
MOPT_EXT4_ONLY | MOPT_SET},
{Opt_dioread_lock, EXT4_MOUNT_DIOREAD_NOLOCK,
MOPT_EXT4_ONLY | MOPT_CLEAR},
- {Opt_discard, EXT4_MOUNT_DISCARD, MOPT_SET},
- {Opt_nodiscard, EXT4_MOUNT_DISCARD, MOPT_CLEAR},
+ {Opt_discard, EXT4_MOUNT_DISCARD, MOPT_EXT5_OPT | MOPT_SET},
+ {Opt_nodiscard, EXT4_MOUNT_DISCARD, MOPT_EXT5_OPT | MOPT_CLEAR},
{Opt_delalloc, EXT4_MOUNT_DELALLOC,
MOPT_EXT4_ONLY | MOPT_SET | MOPT_EXPLICIT},
{Opt_nodelalloc, EXT4_MOUNT_DELALLOC,
MOPT_EXT4_ONLY | MOPT_CLEAR},
{Opt_journal_checksum, EXT4_MOUNT_JOURNAL_CHECKSUM,
- MOPT_EXT4_ONLY | MOPT_SET},
+ MOPT_EXT5_OPT | MOPT_EXT4_ONLY | MOPT_SET},
{Opt_journal_async_commit, (EXT4_MOUNT_JOURNAL_ASYNC_COMMIT |
EXT4_MOUNT_JOURNAL_CHECKSUM),
MOPT_EXT4_ONLY | MOPT_SET},
{Opt_noload, EXT4_MOUNT_NOLOAD, MOPT_NO_EXT2 | MOPT_SET},
- {Opt_err_panic, EXT4_MOUNT_ERRORS_PANIC, MOPT_SET | MOPT_CLEAR_ERR},
- {Opt_err_ro, EXT4_MOUNT_ERRORS_RO, MOPT_SET | MOPT_CLEAR_ERR},
- {Opt_err_cont, EXT4_MOUNT_ERRORS_CONT, MOPT_SET | MOPT_CLEAR_ERR},
+ {Opt_err_panic, EXT4_MOUNT_ERRORS_PANIC, MOPT_EXT5_OPT | MOPT_SET | MOPT_CLEAR_ERR},
+ {Opt_err_ro, EXT4_MOUNT_ERRORS_RO, MOPT_EXT5_OPT | MOPT_SET | MOPT_CLEAR_ERR},
+ {Opt_err_cont, EXT4_MOUNT_ERRORS_CONT, MOPT_EXT5_OPT | MOPT_SET | MOPT_CLEAR_ERR},
{Opt_data_err_abort, EXT4_MOUNT_DATA_ERR_ABORT,
MOPT_NO_EXT2 | MOPT_SET},
{Opt_data_err_ignore, EXT4_MOUNT_DATA_ERR_ABORT,
@@ -1408,24 +1444,24 @@ static const struct mount_opts {
{Opt_stripe, 0, MOPT_GTE0},
{Opt_resuid, 0, MOPT_GTE0},
{Opt_resgid, 0, MOPT_GTE0},
- {Opt_journal_dev, 0, MOPT_GTE0},
- {Opt_journal_path, 0, MOPT_STRING},
+ {Opt_journal_dev, 0, MOPT_EXT5_OPT | MOPT_GTE0},
+ {Opt_journal_path, 0, MOPT_EXT5_OPT | MOPT_STRING},
{Opt_journal_ioprio, 0, MOPT_GTE0},
- {Opt_data_journal, EXT4_MOUNT_JOURNAL_DATA, MOPT_NO_EXT2 | MOPT_DATAJ},
- {Opt_data_ordered, EXT4_MOUNT_ORDERED_DATA, MOPT_NO_EXT2 | MOPT_DATAJ},
+ {Opt_data_journal, EXT4_MOUNT_JOURNAL_DATA, MOPT_EXT5_OPT | MOPT_NO_EXT2 | MOPT_DATAJ},
+ {Opt_data_ordered, EXT4_MOUNT_ORDERED_DATA, MOPT_EXT5_OPT | MOPT_NO_EXT2 | MOPT_DATAJ},
{Opt_data_writeback, EXT4_MOUNT_WRITEBACK_DATA,
- MOPT_NO_EXT2 | MOPT_DATAJ},
- {Opt_user_xattr, EXT4_MOUNT_XATTR_USER, MOPT_SET},
+ MOPT_EXT5_OPT | MOPT_NO_EXT2 | MOPT_DATAJ},
+ {Opt_user_xattr, EXT4_MOUNT_XATTR_USER, MOPT_EXT5_OPT | MOPT_SET},
{Opt_nouser_xattr, EXT4_MOUNT_XATTR_USER, MOPT_CLEAR},
#ifdef CONFIG_EXT4_FS_POSIX_ACL
- {Opt_acl, EXT4_MOUNT_POSIX_ACL, MOPT_SET},
+ {Opt_acl, EXT4_MOUNT_POSIX_ACL, MOPT_EXT5_OPT | MOPT_SET},
{Opt_noacl, EXT4_MOUNT_POSIX_ACL, MOPT_CLEAR},
#else
{Opt_acl, 0, MOPT_NOSUPPORT},
{Opt_noacl, 0, MOPT_NOSUPPORT},
#endif
{Opt_nouid32, EXT4_MOUNT_NO_UID32, MOPT_SET},
- {Opt_debug, EXT4_MOUNT_DEBUG, MOPT_SET},
+ {Opt_debug, EXT4_MOUNT_DEBUG, MOPT_EXT5_OPT | MOPT_SET},
{Opt_quota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA, MOPT_SET | MOPT_Q},
{Opt_usrquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA,
MOPT_SET | MOPT_Q},
@@ -1502,6 +1538,11 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
"Mount option \"%s\" incompatible with ext3", opt);
return -1;
}
+ if (!(m->flags & MOPT_EXT5_OPT) && is_ext5_fs(sb)) {
+ ext4_msg(sb, KERN_ERR,
+ "Mount option \"%s\" incompatible with ext5", opt);
+ return -1;
+ }
if (args->from && !(m->flags & MOPT_STRING) && match_int(args, &arg))
return -1;
@@ -1532,7 +1573,7 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
} else if (token == Opt_inode_readahead_blks) {
if (arg && (arg > (1 << 30) || !is_power_of_2(arg))) {
ext4_msg(sb, KERN_ERR,
- "EXT4-fs: inode_readahead_blks must be "
+ "inode_readahead_blks must be "
"0 or a power of 2 smaller than 2^31");
return -1;
}
@@ -2811,8 +2852,9 @@ static void print_daily_error_info(unsigned long arg)
ext4_msg(sb, KERN_NOTICE, "error count: %u",
le32_to_cpu(es->s_error_count));
if (es->s_first_error_time) {
- printk(KERN_NOTICE "EXT4-fs (%s): initial error at %u: %.*s:%d",
- sb->s_id, le32_to_cpu(es->s_first_error_time),
+ printk(KERN_NOTICE "EXT%d-fs (%s): initial error at %u: %.*s:%d",
+ ext4_level(sb), sb->s_id,
+ le32_to_cpu(es->s_first_error_time),
(int) sizeof(es->s_first_error_func),
es->s_first_error_func,
le32_to_cpu(es->s_first_error_line));
@@ -2825,8 +2867,9 @@ static void print_daily_error_info(unsigned long arg)
printk("\n");
}
if (es->s_last_error_time) {
- printk(KERN_NOTICE "EXT4-fs (%s): last error at %u: %.*s:%d",
- sb->s_id, le32_to_cpu(es->s_last_error_time),
+ printk(KERN_NOTICE "EXT%d-fs (%s): last error at %u: %.*s:%d",
+ ext4_level(sb), sb->s_id,
+ le32_to_cpu(es->s_last_error_time),
(int) sizeof(es->s_last_error_func),
es->s_last_error_func,
le32_to_cpu(es->s_last_error_line));
@@ -3495,6 +3538,31 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_csum_seed = ext4_chksum(sbi, ~0, es->s_uuid,
sizeof(es->s_uuid));
+ /* check ext5 features and mount options */
+ if (IS_EXT5_SB(sb) &&
+ le16_to_cpu(es->s_minor_rev_level) != EXT5_MINOR_REV_LEVEL) {
+ ext4_msg(sb, KERN_ERR, "VFS: Trying to mount non-ext5 "
+ "filesystem as ext5?");
+ goto failed_mount;
+ }
+
+ if ((le16_to_cpu(es->s_minor_rev_level) == EXT5_MINOR_REV_LEVEL) &&
+ ((le32_to_cpu(es->s_feature_incompat) &
+ EXT5_FEATURE_INCOMPAT_REQD_MASK) != EXT5_FEATURE_INCOMPAT_REQD ||
+ (le32_to_cpu(es->s_feature_ro_compat) &
+ EXT5_FEATURE_RO_COMPAT_REQD_MASK) != EXT5_FEATURE_RO_COMPAT_REQD ||
+ (le32_to_cpu(es->s_feature_compat) &
+ EXT5_FEATURE_COMPAT_REQD_MASK) != EXT5_FEATURE_COMPAT_REQD ||
+ (le32_to_cpu(es->s_default_mount_opts) &
+ EXT5_DEF_MNTOPT_MASK) != EXT5_DEF_MNTOPT)) {
+ ext4_msg(sb, KERN_ERR, "VFS: Found ext5 filesystem with "
+ "missing features. Run e2fsck?");
+ goto failed_mount;
+ }
+
+ if (is_ext5_fs(sb))
+ set_opt(sb, JOURNAL_CHECKSUM);
+
/* Set defaults before we parse the mount options */
def_mount_opts = le32_to_cpu(es->s_default_mount_opts);
set_opt(sb, INIT_INODE_TABLE);
@@ -3562,9 +3630,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
goto failed_mount;
if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
- printk_once(KERN_WARNING "EXT4-fs: Warning: mounting "
+ printk_once(KERN_WARNING "EXT%d-fs: Warning: mounting "
"with data=journal disables delayed "
- "allocation and O_DIRECT support!\n");
+ "allocation and O_DIRECT support!\n",
+ ext4_level(sb));
if (test_opt2(sb, EXPLICIT_DELALLOC)) {
ext4_msg(sb, KERN_ERR, "can't mount with "
"both data=journal and delalloc");
@@ -4073,7 +4142,8 @@ no_journal:
EXT4_SB(sb)->rsv_conversion_wq =
alloc_workqueue("ext4-rsv-conversion", WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
if (!EXT4_SB(sb)->rsv_conversion_wq) {
- printk(KERN_ERR "EXT4-fs: failed to create workqueue\n");
+ printk(KERN_ERR "EXT%d-fs: failed to create workqueue\n",
+ ext4_level(sb));
ret = -ENOMEM;
goto failed_mount4;
}
@@ -5563,6 +5633,9 @@ static int __init ext4_init_fs(void)
goto out1;
register_as_ext3();
register_as_ext2();
+ err = register_filesystem(&ext5_fs_type);
+ if (err)
+ goto out;
err = register_filesystem(&ext4_fs_type);
if (err)
goto out;
@@ -5571,6 +5644,7 @@ static int __init ext4_init_fs(void)
out:
unregister_as_ext2();
unregister_as_ext3();
+ unregister_filesystem(&ext4_fs_type);
destroy_inodecache();
out1:
ext4_mballoc_ready = 0;
@@ -5597,6 +5671,7 @@ static void __exit ext4_exit_fs(void)
unregister_as_ext2();
unregister_as_ext3();
unregister_filesystem(&ext4_fs_type);
+ unregister_filesystem(&ext5_fs_type);
destroy_inodecache();
ext4_exit_mballoc();
ext4_exit_feat_adverts();
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