Merge remote-tracking branch 'origin/upstream-f2fs-stable-linux-3.18.y' into android-3.18

Cherry-picked from origin/upstream-f2fs-stable-linux-3.18.y:

190b8267 treewide: Use array_size in f2fs_kvzalloc()
d68da142 treewide: Use array_size() in f2fs_kzalloc()
5468418c treewide: Use array_size() in f2fs_kmalloc()
b99dfff7 overflow.h: Add allocation size calculation helpers
58492de6 f2fs: fix to clear FI_VOLATILE_FILE correctly
08cf7cf4 f2fs: let sync node IO interrupt async one
5dc93797 f2fs: don't change wbc->sync_mode
2b14c4d5 f2fs: fix to update mtime correctly
1003663b fs: f2fs: insert space around that ':' and ', '
9a7fee86 fs: f2fs: add missing blank lines after declarations
b99500b3 fs: f2fs: changed variable type of offset "unsigned" to "loff_t"
b6fcfe46 f2fs: clean up symbol namespace
687046a9 f2fs: make set_de_type() static
dca849e7 f2fs: make __f2fs_write_data_pages() static
52981c8b f2fs: fix to avoid accessing cross the boundary
93b451b0 f2fs: fix to let caller retry allocating block address
85f6ff36 disable loading f2fs module on PAGE_SIZE > 4KB
20579b36 f2fs: fix error path of move_data_page
6f392e8f f2fs: don't drop dentry pages after fs shutdown
ed6e66b8 f2fs: fix to avoid race during access gc_thread pointer
d7f03212 f2fs: clean up with clear_radix_tree_dirty_tag
ffa60f34 f2fs: fix to don't trigger writeback during recovery
1dddf79a f2fs: clear discard_wake earlier
b89cb8f8 f2fs: let discard thread wait a little longer if dev is busy
07c31862 f2fs: avoid stucking GC due to atomic write
9e64b034 f2fs: introduce sbi->gc_mode to determine the policy
44759560 f2fs: keep migration IO order in LFS mode
b293719d f2fs: fix to wait page writeback during revoking atomic write
dd44aec8 f2fs: Fix deadlock in shutdown ioctl
fd36b4ba f2fs: detect synchronous writeback more earlier
767fcf33 mm: remove nr_pages argument from pagevec_lookup_{,range}_tag()
3962b4cd ceph: use pagevec_lookup_range_nr_tag()
8d4fb49e mm: add variant of pagevec_lookup_range_tag() taking number of pages
5a9fa929 mm: use pagevec_lookup_range_tag() in write_cache_pages()
027f74ce mm: use pagevec_lookup_range_tag() in __filemap_fdatawait_range()
fe9d861b nilfs2: use pagevec_lookup_range_tag()
4050363a gfs2: use pagevec_lookup_range_tag()
9b45683c f2fs: use find_get_pages_tag() for looking up single page
068903b7 f2fs: simplify page iteration loops
4b05a760 f2fs: use pagevec_lookup_range_tag()
399df387 ext4: use pagevec_lookup_range_tag()
7aceaf5c ceph: use pagevec_lookup_range_tag()
31c3bb46 btrfs: use pagevec_lookup_range_tag()
e413f9de mm: implement find_get_pages_range_tag()
c262e001 f2fs: clean up with is_valid_blkaddr()
8a0a325d f2fs: fix to initialize min_mtime with ULLONG_MAX
c9fb6742 f2fs: fix to let checkpoint guarantee atomic page persistence
be38f4be f2fs: fix to initialize i_current_depth according to inode type
9e2d8dc0 Revert "f2fs: add ovp valid_blocks check for bg gc victim to fg_gc"
5927b129 f2fs: don't drop any page on f2fs_cp_error() case
02114f51 f2fs: fix spelling mistake: "extenstion" -> "extension"
ed95774b f2fs: enhance sanity_check_raw_super() to avoid potential overflows
f85501db f2fs: treat volatile file's data as hot one
a6491e35 f2fs: introduce release_discard_addr() for cleanup
77a3dc3f f2fs: fix potential overflow
9bc9ef96 f2fs: rename dio_rwsem to i_gc_rwsem
305b2dee f2fs: move mnt_want_write_file after range check
7a01aa64 f2fs: enforce fsync_mode=strict for renamed directory
5caf80f3 f2fs: sanity check for total valid node blocks
6fcb0e12 f2fs: sanity check on sit entry
94c17928 f2fs: avoid bug_on on corrupted inode
dce5b263 f2fs: give message and set need_fsck given broken node id
bbf83779 f2fs: clean up commit_inmem_pages()
45209f0c f2fs: do not check F2FS_INLINE_DOTS in recover
b37f57bb f2fs: stop issue discard if something wrong with f2fs
520f423b f2fs: fix return value in f2fs_ioc_commit_atomic_write
7343b569 f2fs: allocate hot_data for atomic write more strictly
c6b22cb1 f2fs: check if inmem_pages list is empty correctly
78c65118 f2fs: fix race in between GC and atomic open
ae85d0b3 f2fs: change le32 to le16 of f2fs_inode->i_extra_size
f4d06493 f2fs: check cur_valid_map_mir & raw_sit block count when flush sit entries
20d4b4a4 f2fs: correct return value of f2fs_trim_fs
e21b3152 f2fs: fix to show missing bits in FS_IOC_GETFLAGS
f75ff22e f2fs: remove unneeded F2FS_PROJINHERIT_FL
b294d6aa f2fs: don't use GFP_ZERO for page caches
15cc7ac4 f2fs: issue all big range discards in umount process
64130200 f2fs: remove redundant block plug
6cea5b25 f2fs: remove unmatched zero_user_segment when convert inline dentry
82e0d107 f2fs: introduce private inode status mapping
99b3021b fscrypt: log the crypto algorithm implementations
3b217a27 fscrypt: add Speck128/256 support
fec5996d fscrypt: only derive the needed portion of the key
8d5caf0e fscrypt: separate key lookup from key derivation
1f8ab63a fscrypt: use a common logging function
a81973d8 fscrypt: remove internal key size constants
43b048de fscrypt: remove unnecessary check for non-logon key type
ee136fee fscrypt: make fscrypt_operations.max_namelen an integer
5f867d37 fscrypt: drop empty name check from fname_decrypt()
27433717 fscrypt: drop max_namelen check from fname_decrypt()
1e60d10b fscrypt: don't special-case EOPNOTSUPP from fscrypt_get_encryption_info()
5d06dc06 fscrypt: don't clear flags on crypto transform
d04f0f3c fscrypt: remove stale comment from fscrypt_d_revalidate()
3f337455 fscrypt: remove error messages for skcipher_request_alloc() failure
347264d8 fscrypt: remove unnecessary NULL check when allocating skcipher
f6b4b095 fscrypt: clean up after fscrypt_prepare_lookup() conversions
7d048c02 fscrypt: use unbound workqueue for decryption

Change-Id: I450d208bdd91419f81dc42093aae7642d1893539
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>