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jbd2: add the missing unlock_buffer() in the error path of jbd2_write_superblock()

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commit ef3f5830b859604eda8723c26d90ab23edc027a4 upstream.

jbd2_write_superblock() is under the buffer lock of journal superblock
before ending that superblock write, so add a missing unlock_buffer() in
in the error path before submitting buffer.

Fixes: 742b06b562 ("jbd2: check superblock mapped prior to committing")
Signed-off-by: zhangyi (F) <[email protected]>
Reviewed-by: Ritesh Harjani <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Theodore Ts'o <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
zhangyi (F) 2020-06-20 14:19:48 +08:00 • committed by Greg Kroah-Hartman
commit b4062a49ad
1 changed files with 3 additions and 1 deletions
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4
fs/jbd2/journal.c
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@ -1348,8 +1348,10 @@ static int jbd2_write_superblock(journal_t *journal, int write_flags)
int ret;
/* Buffer got discarded which means block device got invalidated */
if (!buffer_mapped(bh))
if (!buffer_mapped(bh)) {
unlock_buffer(bh);
return -EIO;
}
trace_jbd2_write_superblock(journal, write_flags);
if (!(journal->j_flags & JBD2_BARRIER))