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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 17:55:59 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 17:55:59 -0700
commitdd23f273d9a765d7f092c1bb0d1cd7aaf668077e (patch)
tree9bf826a9f553c9b0a5e852deaaf58bee56b601ac /kernel/locking
parent1684096b1ed813f621fb6cbd06e72235c1c2a0ca (diff)
parentb19385993623c1a18a686b6b271cd24d5aa96f52 (diff)
downloadlinux-dd23f273d9a765d7f092c1bb0d1cd7aaf668077e.tar.bz2
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 'kernel/locking')
-rw-r--r--kernel/locking/lockdep.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index dc3297895ce3..0a1b3c748478 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -30,6 +30,7 @@
#include <linux/sched.h>
#include <linux/sched/clock.h>
#include <linux/sched/task.h>
+#include <linux/sched/mm.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
@@ -2876,6 +2877,8 @@ static void __lockdep_trace_alloc(gfp_t gfp_mask, unsigned long flags)
if (unlikely(!debug_locks))
return;
+ gfp_mask = current_gfp_context(gfp_mask);
+
/* no reclaim without waiting on it */
if (!(gfp_mask & __GFP_DIRECT_RECLAIM))
return;
@@ -2885,7 +2888,7 @@ static void __lockdep_trace_alloc(gfp_t gfp_mask, unsigned long flags)
return;
/* We're only interested __GFP_FS allocations for now */
- if (!(gfp_mask & __GFP_FS))
+ if (!(gfp_mask & __GFP_FS) || (curr->flags & PF_MEMALLOC_NOFS))
return;
/*
@@ -2894,6 +2897,10 @@ static void __lockdep_trace_alloc(gfp_t gfp_mask, unsigned long flags)
if (DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags)))
return;
+ /* Disable lockdep if explicitly requested */
+ if (gfp_mask & __GFP_NOLOCKDEP)
+ return;
+
mark_held_locks(curr, RECLAIM_FS);
}
@@ -3947,7 +3954,7 @@ EXPORT_SYMBOL_GPL(lock_unpin_lock);
void lockdep_set_current_reclaim_state(gfp_t gfp_mask)
{
- current->lockdep_reclaim_gfp = gfp_mask;
+ current->lockdep_reclaim_gfp = current_gfp_context(gfp_mask);
}
EXPORT_SYMBOL_GPL(lockdep_set_current_reclaim_state);