static void ext4_clear_journal_err(struct super_block *sb,
struct ext4_super_block *es);
static int ext4_sync_fs(struct super_block *sb, int wait);
-static int ext4_sync_fs_nojournal(struct super_block *sb, int wait);
static int ext4_remount(struct super_block *sb, int *flags, char *data);
static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf);
static int ext4_unfreeze(struct super_block *sb);
static int ext4_superblock_csum_verify(struct super_block *sb,
struct ext4_super_block *es)
{
- if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
+ if (!ext4_has_metadata_csum(sb))
return 1;
return es->s_checksum == ext4_superblock_csum(sb, es);
{
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
- if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
+ if (!ext4_has_metadata_csum(sb))
return;
es->s_checksum = ext4_superblock_csum(sb, es);
* Currently we don't know the generation for parent directory, so
* a generation of 0 means "accept any"
*/
- inode = ext4_iget(sb, ino);
+ inode = ext4_iget_normal(sb, ino);
if (IS_ERR(inode))
return ERR_CAST(inode);
if (generation && inode->i_generation != generation) {
.bdev_try_to_free_page = bdev_try_to_free_page,
};
-static const struct super_operations ext4_nojournal_sops = {
- .alloc_inode = ext4_alloc_inode,
- .destroy_inode = ext4_destroy_inode,
- .write_inode = ext4_write_inode,
- .dirty_inode = ext4_dirty_inode,
- .drop_inode = ext4_drop_inode,
- .evict_inode = ext4_evict_inode,
- .sync_fs = ext4_sync_fs_nojournal,
- .put_super = ext4_put_super,
- .statfs = ext4_statfs,
- .remount_fs = ext4_remount,
- .show_options = ext4_show_options,
-#ifdef CONFIG_QUOTA
- .quota_read = ext4_quota_read,
- .quota_write = ext4_quota_write,
-#endif
- .bdev_try_to_free_page = bdev_try_to_free_page,
-};
-
static const struct export_operations ext4_export_ops = {
.fh_to_dentry = ext4_fh_to_dentry,
.fh_to_parent = ext4_fh_to_parent,
"not specified");
return 0;
}
- } else {
- if (sbi->s_jquota_fmt) {
- ext4_msg(sb, KERN_ERR, "journaled quota format "
- "specified with no journaling "
- "enabled");
- return 0;
- }
}
#endif
if (test_opt(sb, DIOREAD_NOLOCK)) {
__u16 crc = 0;
__le32 le_group = cpu_to_le32(block_group);
- if ((sbi->s_es->s_feature_ro_compat &
- cpu_to_le32(EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))) {
+ if (ext4_has_metadata_csum(sbi->s_sb)) {
/* Use new metadata_csum algorithm */
__le16 save_csum;
__u32 csum32;
if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) {
/* don't clear list on RO mount w/ errors */
if (es->s_last_orphan && !(s_flags & MS_RDONLY)) {
- jbd_debug(1, "Errors on filesystem, "
+ ext4_msg(sb, KERN_INFO, "Errors on filesystem, "
"clearing orphan list.\n");
es->s_last_orphan = 0;
}
int compat, incompat;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
+ if (ext4_has_metadata_csum(sb)) {
/* journal checksum v3 */
compat = 0;
incompat = JBD2_FEATURE_INCOMPAT_CSUM_V3;
}
/* Precompute checksum seed for all metadata */
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
+ if (ext4_has_metadata_csum(sb))
sbi->s_csum_seed = ext4_chksum(sbi, ~0, es->s_uuid,
sizeof(es->s_uuid));
/*
* set up enough so that it can read an inode
*/
- if (!test_opt(sb, NOLOAD) &&
- EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL))
- sb->s_op = &ext4_sops;
- else
- sb->s_op = &ext4_nojournal_sops;
+ sb->s_op = &ext4_sops;
sb->s_export_op = &ext4_export_ops;
sb->s_xattr = ext4_xattr_handlers;
#ifdef CONFIG_QUOTA
goto out_bdev;
}
+ if ((le32_to_cpu(es->s_feature_ro_compat) &
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) &&
+ es->s_checksum != ext4_superblock_csum(sb, es)) {
+ ext4_msg(sb, KERN_ERR, "external journal has "
+ "corrupt superblock");
+ brelse(bh);
+ goto out_bdev;
+ }
+
if (memcmp(EXT4_SB(sb)->s_es->s_journal_uuid, es->s_uuid, 16)) {
ext4_msg(sb, KERN_ERR, "journal UUID does not match");
brelse(bh);
* being sent at the end of the function. But we can skip it if
* transaction_commit will do it for us.
*/
- target = jbd2_get_latest_transaction(sbi->s_journal);
- if (wait && sbi->s_journal->j_flags & JBD2_BARRIER &&
- !jbd2_trans_will_send_data_barrier(sbi->s_journal, target))
+ if (sbi->s_journal) {
+ target = jbd2_get_latest_transaction(sbi->s_journal);
+ if (wait && sbi->s_journal->j_flags & JBD2_BARRIER &&
+ !jbd2_trans_will_send_data_barrier(sbi->s_journal, target))
+ needs_barrier = true;
+
+ if (jbd2_journal_start_commit(sbi->s_journal, &target)) {
+ if (wait)
+ ret = jbd2_log_wait_commit(sbi->s_journal,
+ target);
+ }
+ } else if (wait && test_opt(sb, BARRIER))
needs_barrier = true;
-
- if (jbd2_journal_start_commit(sbi->s_journal, &target)) {
- if (wait)
- ret = jbd2_log_wait_commit(sbi->s_journal, target);
- }
if (needs_barrier) {
int err;
err = blkdev_issue_flush(sb->s_bdev, GFP_KERNEL, NULL);
return ret;
}
-static int ext4_sync_fs_nojournal(struct super_block *sb, int wait)
-{
- int ret = 0;
-
- trace_ext4_sync_fs(sb, wait);
- flush_workqueue(EXT4_SB(sb)->rsv_conversion_wq);
- dquot_writeback_dquots(sb, -1);
- if (wait && test_opt(sb, BARRIER))
- ret = blkdev_issue_flush(sb->s_bdev, GFP_KERNEL, NULL);
-
- return ret;
-}
-
/*
* LVM calls this function before a (read-only) snapshot is created. This
* gives us a chance to flush the journal completely and mark the fs clean.
journal = EXT4_SB(sb)->s_journal;
- /* Now we set up the journal barrier. */
- jbd2_journal_lock_updates(journal);
+ if (journal) {
+ /* Now we set up the journal barrier. */
+ jbd2_journal_lock_updates(journal);
- /*
- * Don't clear the needs_recovery flag if we failed to flush
- * the journal.
- */
- error = jbd2_journal_flush(journal);
- if (error < 0)
- goto out;
+ /*
+ * Don't clear the needs_recovery flag if we failed to
+ * flush the journal.
+ */
+ error = jbd2_journal_flush(journal);
+ if (error < 0)
+ goto out;
+ }
/* Journal blocked and flushed, clear needs_recovery flag. */
EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
error = ext4_commit_super(sb, 1);
out:
- /* we rely on upper layer to stop further updates */
- jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
+ if (journal)
+ /* we rely on upper layer to stop further updates */
+ jbd2_journal_unlock_updates(journal);
return error;
}
projects / firefly-linux-kernel-4.4.55.git / blobdiff