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-rw-r--r--fs/ext4/super.c29
1 files changed, 21 insertions, 8 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index daabd7a2cee8..9ac34b6ae073 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4473,11 +4473,13 @@ no_journal:
ext4_set_resv_clusters(sb);
- err = ext4_setup_system_zone(sb);
- if (err) {
- ext4_msg(sb, KERN_ERR, "failed to initialize system "
- "zone (%d)", err);
- goto failed_mount4a;
+ if (test_opt(sb, BLOCK_VALIDITY)) {
+ err = ext4_setup_system_zone(sb);
+ if (err) {
+ ext4_msg(sb, KERN_ERR, "failed to initialize system "
+ "zone (%d)", err);
+ goto failed_mount4a;
+ }
}
ext4_ext_init(sb);
@@ -5470,9 +5472,16 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
ext4_register_li_request(sb, first_not_zeroed);
}
- err = ext4_setup_system_zone(sb);
- if (err)
- goto restore_opts;
+ /*
+ * Handle creation of system zone data early because it can fail.
+ * Releasing of existing data is done when we are sure remount will
+ * succeed.
+ */
+ if (test_opt(sb, BLOCK_VALIDITY) && !sbi->system_blks) {
+ err = ext4_setup_system_zone(sb);
+ if (err)
+ goto restore_opts;
+ }
if (sbi->s_journal == NULL && !(old_sb_flags & SB_RDONLY)) {
err = ext4_commit_super(sb, 1);
@@ -5494,6 +5503,8 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
}
}
#endif
+ if (!test_opt(sb, BLOCK_VALIDITY) && sbi->system_blks)
+ ext4_release_system_zone(sb);
/*
* Some options can be enabled by ext4 and/or by VFS mount flag
@@ -5515,6 +5526,8 @@ restore_opts:
sbi->s_commit_interval = old_opts.s_commit_interval;
sbi->s_min_batch_time = old_opts.s_min_batch_time;
sbi->s_max_batch_time = old_opts.s_max_batch_time;
+ if (!test_opt(sb, BLOCK_VALIDITY) && sbi->system_blks)
+ ext4_release_system_zone(sb);
#ifdef CONFIG_QUOTA
sbi->s_jquota_fmt = old_opts.s_jquota_fmt;
for (i = 0; i < EXT4_MAXQUOTAS; i++) {