Merge tag 'for-6.2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "This round there are a lot of cleanups and moved code so the diffstat
  looks huge, otherwise there are some nice performance improvements and
  an update to raid56 reliability.

  User visible features:

   - raid56 reliability vs performance trade off:
      - fix destructive RMW for raid5 data (raid6 still needs work): do
        full checksum verification for all data during RMW cycle, this
        should prevent rewriting potentially corrupted data without
        notice
      - stripes are cached in memory which should reduce the performance
        impact but still can hurt some workloads
      - checksums are verified after repair again
      - this is the last option without introducing additional features
        (write intent bitmap, journal, another tree), the extra checksum
        read/verification was supposed to be avoided by the original
        implementation exactly for performance reasons but that caused
        all the reliability problems

   - discard=async by default for devices that support it

   - implement emergency flush reserve to avoid almost all unnecessary
     transaction aborts due to ENOSPC in cases where there are too many
     delayed refs or delayed allocation

   - skip block group synchronization if there's no change in used
     bytes, can reduce transaction commit count for some workloads

  Performance improvements:

   - fiemap and lseek:
      - overall speedup due to skipping unnecessary or duplicate
        searches (-40% run time)
      - cache some data structures and sharedness of extents (-30% run
        time)

   - send:
      - faster backref resolution when finding clones
      - cached leaf to root mapping for faster backref walking
      - improved clone/sharing detection
      - overall run time improvements (-70%)

  Core:

   - module initialization converted to a table of function pointers run
     in a sequence

   - preparation for fscrypt, extend passing file names across calls,
     dir item can store encryption status

   - raid56 updates:
      - more accurate error tracking of sectors within stripe
      - simplify recovery path and remove dedicated endio worker kthread
      - simplify scrub call paths
      - refactoring to support the extra data checksum verification
        during RMW cycle

   - tree block parentness checks consolidated and done at metadata read
     time

   - improved error handling

   - cleanups:
      - move a lot of code for better synchronization between kernel and
        user space sources, split big files
      - enum cleanups
      - GFP flag cleanups
      - header file cleanups, prototypes, dependencies
      - redundant parameter cleanups
      - inline extent handling simplifications
      - inode parameter conversion
      - data structure cleanups, reductions, renames, merges"

* tag 'for-6.2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (249 commits)
  btrfs: print transaction aborted messages with an error level
  btrfs: sync some cleanups from progs into uapi/btrfs.h
  btrfs: do not BUG_ON() on ENOMEM when dropping extent items for a range
  btrfs: fix extent map use-after-free when handling missing device in read_one_chunk
  btrfs: remove outdated logic from overwrite_item() and add assertion
  btrfs: unify overwrite_item() and do_overwrite_item()
  btrfs: replace strncpy() with strscpy()
  btrfs: fix uninitialized variable in find_first_clear_extent_bit
  btrfs: fix uninitialized parent in insert_state
  btrfs: add might_sleep() annotations
  btrfs: add stack helpers for a few btrfs items
  btrfs: add nr_global_roots to the super block definition
  btrfs: remove BTRFS_LEAF_DATA_OFFSET
  btrfs: add helpers for manipulating leaf items and data
  btrfs: add eb to btrfs_node_key_ptr_offset
  btrfs: pass the extent buffer for the btrfs_item_nr helpers
  btrfs: move the csum helpers into ctree.h
  btrfs: move eb offset helpers into extent_io.h
  btrfs: move file_extent_item helpers into file-item.h
  btrfs: move leaf_data_end into ctree.c
  ...

1 files changed, 15 insertions, 10 deletions

diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index 100d9f4836b1..57d8c72737e1 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -7,6 +7,7 @@
 #include <linux/blkdev.h>
 #include <linux/writeback.h>
 #include <linux/sched/mm.h>
+#include "messages.h"
 #include "misc.h"
 #include "ctree.h"
 #include "transaction.h"
@@ -17,6 +18,8 @@
 #include "delalloc-space.h"
 #include "qgroup.h"
 #include "subpage.h"
+#include "file.h"
+#include "super.h"
 
 static struct kmem_cache *btrfs_ordered_extent_cache;
 
@@ -143,7 +146,7 @@ static inline struct rb_node *tree_search(struct btrfs_ordered_inode_tree *tree,
 	return ret;
 }
 
-/**
+/*
  * Add an ordered extent to the per-inode tree.
  *
  * @inode:           Inode that this extent is for.
@@ -501,7 +504,7 @@ void btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry)
 		ASSERT(list_empty(&entry->log_list));
 		ASSERT(RB_EMPTY_NODE(&entry->rb_node));
 		if (entry->inode)
-			btrfs_add_delayed_iput(entry->inode);
+			btrfs_add_delayed_iput(BTRFS_I(entry->inode));
 		while (!list_empty(&entry->list)) {
 			cur = entry->list.next;
 			sum = list_entry(cur, struct btrfs_ordered_sum, list);
@@ -1019,17 +1022,18 @@ out:
 }
 
 /*
- * btrfs_flush_ordered_range - Lock the passed range and ensures all pending
- * ordered extents in it are run to completion.
+ * Lock the passed range and ensures all pending ordered extents in it are run
+ * to completion.
  *
  * @inode:        Inode whose ordered tree is to be searched
  * @start:        Beginning of range to flush
  * @end:          Last byte of range to lock
  * @cached_state: If passed, will return the extent state responsible for the
- * locked range. It's the caller's responsibility to free the cached state.
+ *                locked range. It's the caller's responsibility to free the
+ *                cached state.
  *
- * This function always returns with the given range locked, ensuring after it's
- * called no order extent can be pending.
+ * Always return with the given range locked, ensuring after it's called no
+ * order extent can be pending.
  */
 void btrfs_lock_and_flush_ordered_range(struct btrfs_inode *inode, u64 start,
 					u64 end,
@@ -1069,11 +1073,12 @@ void btrfs_lock_and_flush_ordered_range(struct btrfs_inode *inode, u64 start,
  * Return true if btrfs_lock_ordered_range does not return any extents,
  * otherwise false.
  */
-bool btrfs_try_lock_ordered_range(struct btrfs_inode *inode, u64 start, u64 end)
+bool btrfs_try_lock_ordered_range(struct btrfs_inode *inode, u64 start, u64 end,
+				  struct extent_state **cached_state)
 {
 	struct btrfs_ordered_extent *ordered;
 
-	if (!try_lock_extent(&inode->io_tree, start, end))
+	if (!try_lock_extent(&inode->io_tree, start, end, cached_state))
 		return false;
 
 	ordered = btrfs_lookup_ordered_range(inode, start, end - start + 1);
@@ -1081,7 +1086,7 @@ bool btrfs_try_lock_ordered_range(struct btrfs_inode *inode, u64 start, u64 end)
 		return true;
 
 	btrfs_put_ordered_extent(ordered);
-	unlock_extent(&inode->io_tree, start, end, NULL);
+	unlock_extent(&inode->io_tree, start, end, cached_state);
 
 	return false;
 }