Re: [RFC PATCH v3 4/8] jbd2: remove redundant buffer io error checks
From: Jan Kara <jack@suse.cz>
Date: 2021-06-03 16:29:01
On Thu 27-05-21 21:56:37, Zhang Yi wrote:
quoted hunk ↗ jump to hunk
Now that __jbd2_journal_remove_checkpoint() can detect buffer io error and mark journal checkpoint error, then we abort the journal later before updating log tail to ensure the filesystem works consistently. So we could remove other redundant buffer io error checkes. Signed-off-by: Zhang Yi <yi.zhang@huawei.com> --- fs/jbd2/checkpoint.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-)diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c index 2cbac0e3cff3..c1f746a5cc1a 100644 --- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c@@ -91,8 +91,7 @@ static int __try_to_free_cp_buf(struct journal_head *jh) int ret = 0; struct buffer_head *bh = jh2bh(jh); - if (jh->b_transaction == NULL && !buffer_locked(bh) && - !buffer_dirty(bh) && !buffer_write_io_error(bh)) { + if (!jh->b_transaction && !buffer_locked(bh) && !buffer_dirty(bh)) { JBUFFER_TRACE(jh, "remove from checkpoint list"); ret = __jbd2_journal_remove_checkpoint(jh) + 1; }@@ -295,8 +294,6 @@ int jbd2_log_do_checkpoint(journal_t *journal) goto restart; } if (!buffer_dirty(bh)) { - if (unlikely(buffer_write_io_error(bh)) && !result) - result = -EIO; BUFFER_TRACE(bh, "remove from checkpoint"); if (__jbd2_journal_remove_checkpoint(jh)) /* The transaction was released; we're done */@@ -356,8 +353,6 @@ int jbd2_log_do_checkpoint(journal_t *journal) spin_lock(&journal->j_list_lock); goto restart2; } - if (unlikely(buffer_write_io_error(bh)) && !result) - result = -EIO; /* * Now in whatever state the buffer currently is, we
You can also drop:
if (result < 0)
jbd2_journal_abort(journal, result);
in jbd2_log_do_checkpoint() as there's now nothing which can set 'result'
in the loops... Otherwise looks good. Feel free to add:
Reviewed-by: Jan Kara <jack@suse.cz>
Honza
--
Jan Kara [off-list ref]
SUSE Labs, CR