[PATCH 4/4] f2fs: give -EINVAL for norecovery and rw mount

Jaegeuk Kim
2016-03-24T01:31:38Z

Once detecting something to recover, f2fs should stop mounting, given norecovery
and rw mount options.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/f2fs.h | 2 +-
fs/f2fs/recovery.c | 11 +++++++----
fs/f2fs/super.c | 14 ++++++++++++--
3 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 286e917..5dcc04e 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1907,7 +1907,7 @@ void build_gc_manager(struct f2fs_sb_info *);
/*
* recovery.c
*/
-int recover_fsync_data(struct f2fs_sb_info *);
+int recover_fsync_data(struct f2fs_sb_info *, bool);
bool space_for_roll_forward(struct f2fs_sb_info *);

/*
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index 0b30cd2..e87f071 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -551,12 +551,13 @@ next:
return err;
}

-int recover_fsync_data(struct f2fs_sb_info *sbi)
+int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only)
{
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE);
struct list_head inode_list;
block_t blkaddr;
int err;
+ int ret = 0;
bool need_writecp = false;

fsync_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_inode_entry",
@@ -573,11 +574,13 @@ int recover_fsync_data(struct f2fs_sb_info *sbi)

/* step #1: find fsynced inode numbers */
err = find_fsync_dnodes(sbi, &inode_list);
- if (err)
+ if (err || list_empty(&inode_list))
goto out;

- if (list_empty(&inode_list))
+ if (check_only) {
+ ret = 1;
goto out;
+ }

need_writecp = true;

@@ -625,5 +628,5 @@ out:
} else {
mutex_unlock(&sbi->cp_mutex);
}
- return err;
+ return ret ? ret: err;
}
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 5718187..abc0d75 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1562,14 +1562,24 @@ try_onemore:
if (need_fsck)
set_sbi_flag(sbi, SBI_NEED_FSCK);

- err = recover_fsync_data(sbi);
- if (err) {
+ err = recover_fsync_data(sbi, false);
+ if (err < 0) {
need_fsck = true;
f2fs_msg(sb, KERN_ERR,
"Cannot recover all fsync data errno=%ld", err);
goto free_kobj;
}
+ } else {
+ err = recover_fsync_data(sbi, true);
+
+ if (!f2fs_readonly(sb) && err > 0) {
+ err = -EINVAL;
+ f2fs_msg(sb, KERN_ERR,
+ "Need to recover fsync data");
+ goto free_kobj;
+ }
}
+
/* recover_fsync_data() cleared this already */
clear_sbi_flag(sbi, SBI_POR_DOING);

--
2.6.3