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authorThomas Zimmermann <[email protected]>2020-04-17 08:12:22 +0200
committerThomas Zimmermann <[email protected]>2020-04-17 08:12:22 +0200
commit08d99b2c23dfa84ca5b5e5c194062a0550888b71 (patch)
treef4cf81ba52b375bbafd3b7ee2603b3a4cae7fe30 /fs/jbd2/commit.c
parent13e3d94110d82e318d640d0980896d32e02ba4d6 (diff)
parent8f3d9f354286745c751374f5f1fcafee6b3f3136 (diff)
Merge drm/drm-next into drm-misc-next
Backmerging required to pull topic/phy-compliance. Signed-off-by: Thomas Zimmermann <[email protected]>
Diffstat (limited to 'fs/jbd2/commit.c')
-rw-r--r--fs/jbd2/commit.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 27373f5792a4..e855d8260433 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -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)) {