Merge branch 'akpm' (patches from Andrew Morton)

Merge more patches from Andrew Morton:
 "The rest of MM.  Plus one misc cleanup"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (35 commits)
  mm/Kconfig: add MMU dependency for MIGRATION.
  kernel: replace strict_strto*() with kstrto*()
  mm, thp: count thp_fault_fallback anytime thp fault fails
  thp: consolidate code between handle_mm_fault() and do_huge_pmd_anonymous_page()
  thp: do_huge_pmd_anonymous_page() cleanup
  thp: move maybe_pmd_mkwrite() out of mk_huge_pmd()
  mm: cleanup add_to_page_cache_locked()
  thp: account anon transparent huge pages into NR_ANON_PAGES
  truncate: drop 'oldsize' truncate_pagecache() parameter
  mm: make lru_add_drain_all() selective
  memcg: document cgroup dirty/writeback memory statistics
  memcg: add per cgroup writeback pages accounting
  memcg: check for proper lock held in mem_cgroup_update_page_stat
  memcg: remove MEMCG_NR_FILE_MAPPED
  memcg: reduce function dereference
  memcg: avoid overflow caused by PAGE_ALIGN
  memcg: rename RESOURCE_MAX to RES_COUNTER_MAX
  memcg: correct RESOURCE_MAX to ULLONG_MAX
  mm: memcg: do not trap chargers with full callstack on OOM
  mm: memcg: rework and document OOM waiting and wakeup
  ...

2 files changed, 2 insertions, 4 deletions

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index ef3bea7bb257..3f0ddfce96e6 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -221,12 +221,10 @@ int btrfs_truncate_free_space_cache(struct btrfs_root *root,
                                     struct btrfs_path *path,
                                     struct inode *inode)
 {
-        loff_t oldsize;
         int ret = 0;
 
-        oldsize = i_size_read(inode);
         btrfs_i_size_write(inode, 0);
-        truncate_pagecache(inode, oldsize, 0);
+        truncate_pagecache(inode, 0);
 
         /*
          * We don't need an orphan item because truncating the free space cache
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index db1e43948579..f338c5672d58 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4349,7 +4349,7 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr)
                 inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
 
         if (newsize > oldsize) {
-                truncate_pagecache(inode, oldsize, newsize);
+                truncate_pagecache(inode, newsize);
                 ret = btrfs_cont_expand(inode, oldsize, newsize);
                 if (ret)
                         return ret;