mmap_assert_write_locked(mm);
BUG_ON(atomic_read(&mm->mm_users) <= 0);
- if (IS_ENABLED(CONFIG_LOCKDEP)) {
- fs_reclaim_acquire(GFP_KERNEL);
- lock_map_acquire(&__mmu_notifier_invalidate_range_start_map);
- lock_map_release(&__mmu_notifier_invalidate_range_start_map);
- fs_reclaim_release(GFP_KERNEL);
- }
-
if (!mm->notifier_subscriptions) {
/*
* kmalloc cannot be called under mm_take_all_locks(), but we
#include <trace/events/oom.h>
#include <linux/prefetch.h>
#include <linux/mm_inline.h>
+#include <linux/mmu_notifier.h>
#include <linux/migrate.h>
#include <linux/hugetlb.h>
#include <linux/sched/rt.h>
static struct lockdep_map __fs_reclaim_map =
STATIC_LOCKDEP_MAP_INIT("fs_reclaim", &__fs_reclaim_map);
-static bool __need_fs_reclaim(gfp_t gfp_mask)
+static bool __need_reclaim(gfp_t gfp_mask)
{
- gfp_mask = current_gfp_context(gfp_mask);
-
/* no reclaim without waiting on it */
if (!(gfp_mask & __GFP_DIRECT_RECLAIM))
return false;
if (current->flags & PF_MEMALLOC)
return false;
- /* We're only interested __GFP_FS allocations for now */
- if (!(gfp_mask & __GFP_FS))
- return false;
-
if (gfp_mask & __GFP_NOLOCKDEP)
return false;
void fs_reclaim_acquire(gfp_t gfp_mask)
{
- if (__need_fs_reclaim(gfp_mask))
- __fs_reclaim_acquire();
+ gfp_mask = current_gfp_context(gfp_mask);
+
+ if (__need_reclaim(gfp_mask)) {
+ if (gfp_mask & __GFP_FS)
+ __fs_reclaim_acquire();
+
+#ifdef CONFIG_MMU_NOTIFIER
+ lock_map_acquire(&__mmu_notifier_invalidate_range_start_map);
+ lock_map_release(&__mmu_notifier_invalidate_range_start_map);
+#endif
+
+ }
}
EXPORT_SYMBOL_GPL(fs_reclaim_acquire);
void fs_reclaim_release(gfp_t gfp_mask)
{
- if (__need_fs_reclaim(gfp_mask))
- __fs_reclaim_release();
+ gfp_mask = current_gfp_context(gfp_mask);
+
+ if (__need_reclaim(gfp_mask)) {
+ if (gfp_mask & __GFP_FS)
+ __fs_reclaim_release();
+ }
}
EXPORT_SYMBOL_GPL(fs_reclaim_release);
#endif