X-Git-Url: https://repo.jachan.dev/linux.git/blobdiff_plain/9c577491b985e1b27995abe69b32b041893798cf..71b77a7a27a3:/fs/jbd2/commit.c

diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 27373f5792a4..6d2da8ad0e6f 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -775,7 +775,7 @@ start_journal_io:
 	if (commit_transaction->t_need_data_flush &&
 	    (journal->j_fs_dev != journal->j_dev) &&
 	    (journal->j_flags & JBD2_BARRIER))
-		blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS, NULL);
+		blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS);
 
 	/* Done it all: now write the commit record asynchronously. */
 	if (jbd2_has_feature_async_commit(journal)) {
@@ -882,7 +882,7 @@ start_journal_io:
 	stats.run.rs_blocks_logged++;
 	if (jbd2_has_feature_async_commit(journal) &&
 	    journal->j_flags & JBD2_BARRIER) {
-		blkdev_issue_flush(journal->j_dev, GFP_NOFS, NULL);
+		blkdev_issue_flush(journal->j_dev, GFP_NOFS);
 	}
 
 	if (err)
@@ -997,9 +997,10 @@ restart_loop:
 			 * journalled data) we need to unmap buffer and clear
 			 * more bits. We also need to be careful about the check
 			 * because the data page mapping can get cleared under
-			 * out hands, which alse need not to clear more bits
-			 * because the page and buffers will be freed and can
-			 * never be reused once we are done with them.
+			 * our hands. Note that if mapping == NULL, we don't
+			 * need to make buffer unmapped because the page is
+			 * already detached from the mapping and buffers cannot
+			 * get reused.
 			 */
 			mapping = READ_ONCE(bh->b_page->mapping);
 			if (mapping && !sb_is_blkdev_sb(mapping->host->i_sb)) {