Merge branch 'lazytime' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull lazytime mount option support from Al Viro:
 "Lazytime stuff from tytso"

* 'lazytime' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ext4: add optimization for the lazytime mount option
  vfs: add find_inode_nowait() function
  vfs: add support for a lazytime mount option

diff --cc fs/ext4/inode.c
Simple merge

diff --cc fs/ext4/super.c
index 10e8c6b7ca08221bb1936da1f376c6b97e8a9d86,362b23c8497aca4bb1b0c93fd6044d8f2556c3ee..1adac6868e6fd0e97f91fa871ed45288fffc5cb6
--- 1/fs/ext4/super.c
--- 2/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@@ -1124,8 -1137,9 +1124,9 @@@ enum 
        Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
        Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
        Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err,
 -      Opt_usrquota, Opt_grpquota, Opt_i_version,
 +      Opt_usrquota, Opt_grpquota, Opt_i_version, Opt_dax,
        Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit,
+       Opt_lazytime, Opt_nolazytime,
        Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
        Opt_inode_readahead_blks, Opt_journal_ioprio,
        Opt_dioread_nolock, Opt_dioread_lock,
@@@ -1187,9 -1201,10 +1188,11 @@@ static const match_table_t tokens = 
        {Opt_barrier, "barrier"},
        {Opt_nobarrier, "nobarrier"},
        {Opt_i_version, "i_version"},
 +      {Opt_dax, "dax"},
        {Opt_stripe, "stripe=%u"},
        {Opt_delalloc, "delalloc"},
+       {Opt_lazytime, "lazytime"},
+       {Opt_nolazytime, "nolazytime"},
        {Opt_nodelalloc, "nodelalloc"},
        {Opt_removed, "mblk_io_submit"},
        {Opt_removed, "nomblk_io_submit"},

diff --cc fs/fs-writeback.c
Simple merge

diff --cc fs/gfs2/file.c
Simple merge

diff --cc fs/inode.c
Simple merge

diff --cc include/linux/backing-dev.h
Simple merge

diff --cc include/linux/fs.h
Simple merge

diff --cc include/trace/events/writeback.h
Simple merge

diff --cc mm/backing-dev.c
Simple merge