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-rw-r--r--fs/jbd2/journal.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 382c030cc78b..37e16d969925 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1350,6 +1350,10 @@ static int jbd2_write_superblock(journal_t *journal, int write_flags)
journal_superblock_t *sb = journal->j_superblock;
int ret;
+ /* Buffer got discarded which means block device got invalidated */
+ if (!buffer_mapped(bh))
+ return -EIO;
+
trace_jbd2_write_superblock(journal, write_flags);
if (!(journal->j_flags & JBD2_BARRIER))
write_flags &= ~(REQ_FUA | REQ_PREFLUSH);