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authorRichard Weinberger <richard@nod.at>2018-01-17 19:12:42 +0100
committerRichard Weinberger <richard@nod.at>2018-04-04 23:41:44 +0200
commitaac17948a7ce01fb60b9ee6cf902967a47b3ce26 (patch)
tree2795f998c8824203475027fcd5d99c4babadd1bc /fs/ubifs
parent0adb32858b0bddf4ada5f364a84ed60b196dbcda (diff)
downloadlinux-aac17948a7ce01fb60b9ee6cf902967a47b3ce26.tar.bz2
ubifs: Check ubifs_wbuf_sync() return code
If ubifs_wbuf_sync() fails we must not write a master node with the dirty marker cleared. Otherwise it is possible that in case of an IO error while syncing we mark the filesystem as clean and UBIFS refuses to recover upon next mount. Cc: <stable@vger.kernel.org> Fixes: 1e51764a3c2a ("UBIFS: add new flash file system") Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs')
-rw-r--r--fs/ubifs/super.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index b16ef162344a..6c397a389105 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1737,8 +1737,11 @@ static void ubifs_remount_ro(struct ubifs_info *c)
dbg_save_space_info(c);
- for (i = 0; i < c->jhead_cnt; i++)
- ubifs_wbuf_sync(&c->jheads[i].wbuf);
+ for (i = 0; i < c->jhead_cnt; i++) {
+ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
+ if (err)
+ ubifs_ro_mode(c, err);
+ }
c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_DIRTY);
c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS);
@@ -1804,8 +1807,11 @@ static void ubifs_put_super(struct super_block *sb)
int err;
/* Synchronize write-buffers */
- for (i = 0; i < c->jhead_cnt; i++)
- ubifs_wbuf_sync(&c->jheads[i].wbuf);
+ for (i = 0; i < c->jhead_cnt; i++) {
+ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
+ if (err)
+ ubifs_ro_mode(c, err);
+ }
/*
* We are being cleanly unmounted which means the