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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-04 03:55:59 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-04 03:55:59 +0300
commitdd23f273d9a765d7f092c1bb0d1cd7aaf668077e (patch)
tree9bf826a9f553c9b0a5e852deaaf58bee56b601ac /fs/jbd2/journal.c
parent1684096b1ed813f621fb6cbd06e72235c1c2a0ca (diff)
parentb19385993623c1a18a686b6b271cd24d5aa96f52 (diff)
downloadlinux-dd23f273d9a765d7f092c1bb0d1cd7aaf668077e.tar.xz
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: - a few misc things - most of MM - KASAN updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (102 commits) kasan: separate report parts by empty lines kasan: improve double-free report format kasan: print page description after stacks kasan: improve slab object description kasan: change report header kasan: simplify address description logic kasan: change allocation and freeing stack traces headers kasan: unify report headers kasan: introduce helper functions for determining bug type mm: hwpoison: call shake_page() after try_to_unmap() for mlocked page mm: hwpoison: call shake_page() unconditionally mm/swapfile.c: fix swap space leak in error path of swap_free_entries() mm/gup.c: fix access_ok() argument type mm/truncate: avoid pointless cleancache_invalidate_inode() calls. mm/truncate: bail out early from invalidate_inode_pages2_range() if mapping is empty fs/block_dev: always invalidate cleancache in invalidate_bdev() fs: fix data invalidation in the cleancache during direct IO zram: reduce load operation in page_same_filled zram: use zram_free_page instead of open-coded zram: introduce zram data accessor ...
Diffstat (limited to 'fs/jbd2/journal.c')
-rw-r--r--fs/jbd2/journal.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 5adc2fb62b0f..c43fe83ee708 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -43,6 +43,7 @@
#include <linux/backing-dev.h>
#include <linux/bitops.h>
#include <linux/ratelimit.h>
+#include <linux/sched/mm.h>
#define CREATE_TRACE_POINTS
#include <trace/events/jbd2.h>
@@ -206,6 +207,14 @@ static int kjournald2(void *arg)
wake_up(&journal->j_wait_done_commit);
/*
+ * Make sure that no allocations from this kernel thread will ever
+ * recurse to the fs layer because we are responsible for the
+ * transaction commit and any fs involvement might get stuck waiting for
+ * the trasn. commit.
+ */
+ memalloc_nofs_save();
+
+ /*
* And now, wait forever for commit wakeup events.
*/
write_lock(&journal->j_state_lock);