Merge branch 'for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "There are some new user features and the usual load of invisible
  enhancements or cleanups.

  New features:

   - extend mount options to specify zlib compression level, -o
     compress=zlib:9

   - v2 of ioctl "extent to inode mapping", addressing a usecase where
     we want to retrieve more but inaccurate results and do the
     postprocessing in userspace, aiding defragmentation or
     deduplication tools

   - populate compression heuristics logic, do data sampling and try to
     guess compressibility by: looking for repeated patterns, counting
     unique byte values and distribution, calculating Shannon entropy;
     this will need more benchmarking and possibly fine tuning, but the
     base should be good enough

   - enable indexing for btrfs as lower filesystem in overlayfs

   - speedup page cache readahead during send on large files

  Internal enhancements:

   - more sanity checks of b-tree items when reading them from disk

   - more EINVAL/EUCLEAN fixups, missing BLK_STS_* conversion, other
     errno or error handling fixes

   - remove some homegrown IO-related logic, that's been obsoleted by
     core block layer changes (batching, plug/unplug, own counters)

   - add ref-verify, optional debugging feature to verify extent
     reference accounting

   - simplify code handling outstanding extents, make it more clear
     where and how the accounting is done

   - make delalloc reservations per-inode, simplify the code and make
     the logic more straightforward

   - extensive cleanup of delayed refs code

  Notable fixes:

   - fix send ioctl on 32bit with 64bit kernel"

* 'for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (102 commits)
  btrfs: Fix bug for misused dev_t when lookup in dev state hash table.
  Btrfs: heuristic: add Shannon entropy calculation
  Btrfs: heuristic: add byte core set calculation
  Btrfs: heuristic: add byte set calculation
  Btrfs: heuristic: add detection of repeated data patterns
  Btrfs: heuristic: implement sampling logic
  Btrfs: heuristic: add bucket and sample counters and other defines
  Btrfs: compression: separate heuristic/compression workspaces
  btrfs: move btrfs_truncate_block out of trans handle
  btrfs: don't call btrfs_start_delalloc_roots in flushoncommit
  btrfs: track refs in a rb_tree instead of a list
  btrfs: add a comp_refs() helper
  btrfs: switch args for comp_*_refs
  btrfs: make the delalloc block rsv per inode
  btrfs: add tracepoints for outstanding extents mods
  Btrfs: rework outstanding_extents
  btrfs: increase output size for LOGICAL_INO_V2 ioctl
  btrfs: add a flags argument to LOGICAL_INO and call it LOGICAL_INO_V2
  btrfs: add a flag to iterate_inodes_from_logical to find all extent refs for uncompressed extents
  btrfs: send: remove unused code
  ...

1 files changed, 11 insertions, 15 deletions

diff --git a/fs/btrfs/sysfs.h b/fs/btrfs/sysfs.h
index 4cb908305e5d..80457f31c29f 100644
--- a/fs/btrfs/sysfs.h
+++ b/fs/btrfs/sysfs.h
@@ -21,21 +21,16 @@ enum btrfs_feature_set {
 	.store	= _store,						\
 }
 
-#define BTRFS_ATTR_RW(_name, _show, _store)			\
-	static struct kobj_attribute btrfs_attr_##_name =		\
+#define BTRFS_ATTR_RW(_prefix, _name, _show, _store)			\
+	static struct kobj_attribute btrfs_attr_##_prefix##_##_name =	\
 			__INIT_KOBJ_ATTR(_name, 0644, _show, _store)
 
-#define BTRFS_ATTR(_name, _show)					\
-	static struct kobj_attribute btrfs_attr_##_name =		\
+#define BTRFS_ATTR(_prefix, _name, _show)				\
+	static struct kobj_attribute btrfs_attr_##_prefix##_##_name =	\
 			__INIT_KOBJ_ATTR(_name, 0444, _show, NULL)
 
-#define BTRFS_ATTR_PTR(_name)    (&btrfs_attr_##_name.attr)
-
-#define BTRFS_RAID_ATTR(_name, _show)					\
-	static struct kobj_attribute btrfs_raid_attr_##_name =		\
-			__INIT_KOBJ_ATTR(_name, 0444, _show, NULL)
-
-#define BTRFS_RAID_ATTR_PTR(_name)    (&btrfs_raid_attr_##_name.attr)
+#define BTRFS_ATTR_PTR(_prefix, _name)					\
+	(&btrfs_attr_##_prefix##_##_name.attr)
 
 
 struct btrfs_feature_attr {
@@ -44,15 +39,16 @@ struct btrfs_feature_attr {
 	u64 feature_bit;
 };
 
-#define BTRFS_FEAT_ATTR(_name, _feature_set, _prefix, _feature_bit)	     \
-static struct btrfs_feature_attr btrfs_attr_##_name = {			     \
+#define BTRFS_FEAT_ATTR(_name, _feature_set, _feature_prefix, _feature_bit)  \
+static struct btrfs_feature_attr btrfs_attr_features_##_name = {	     \
 	.kobj_attr = __INIT_KOBJ_ATTR(_name, S_IRUGO,			     \
 				      btrfs_feature_attr_show,		     \
 				      btrfs_feature_attr_store),	     \
 	.feature_set	= _feature_set,					     \
-	.feature_bit	= _prefix ##_## _feature_bit,			     \
+	.feature_bit	= _feature_prefix ##_## _feature_bit,		     \
 }
-#define BTRFS_FEAT_ATTR_PTR(_name)    (&btrfs_attr_##_name.kobj_attr.attr)
+#define BTRFS_FEAT_ATTR_PTR(_name)					     \
+	(&btrfs_attr_features_##_name.kobj_attr.attr)
 
 #define BTRFS_FEAT_ATTR_COMPAT(name, feature) \
 	BTRFS_FEAT_ATTR(name, FEAT_COMPAT, BTRFS_FEATURE_COMPAT, feature)