btrfs: drop extent_changeset from set_extent_bit

The only places that set extent_changeset is set_record_extent_bits,
everywhere else sets it to NULL.  Drop this argument from
set_extent_bit.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/extent-io-tree.c

@@ -1170,11 +1170,10 @@ static int __set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
 }
 
 int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
-		   u32 bits, struct extent_state **cached_state, gfp_t mask,
-		   struct extent_changeset *changeset)
+		   u32 bits, struct extent_state **cached_state, gfp_t mask)
 {
 	return __set_extent_bit(tree, start, end, bits, NULL, cached_state,
-				changeset, mask);
+				NULL, mask);
 }
 
 /*

fs/btrfs/extent-io-tree.h

@@ -160,19 +160,18 @@ static inline int clear_extent_bits(struct extent_io_tree *tree, u64 start,
 int set_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
 			   u32 bits, struct extent_changeset *changeset);
 int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
-		   u32 bits, struct extent_state **cached_state, gfp_t mask,
-		   struct extent_changeset *changeset);
+		   u32 bits, struct extent_state **cached_state, gfp_t mask);
 
 static inline int set_extent_bits_nowait(struct extent_io_tree *tree, u64 start,
 					 u64 end, u32 bits)
 {
-	return set_extent_bit(tree, start, end, bits, NULL, GFP_NOWAIT, NULL);
+	return set_extent_bit(tree, start, end, bits, NULL, GFP_NOWAIT);
 }
 
 static inline int set_extent_bits(struct extent_io_tree *tree, u64 start,
 		u64 end, u32 bits)
 {
-	return set_extent_bit(tree, start, end, bits, NULL, GFP_NOFS, NULL);
+	return set_extent_bit(tree, start, end, bits, NULL, GFP_NOFS);
 }
 
 static inline int clear_extent_uptodate(struct extent_io_tree *tree, u64 start,
@@ -185,7 +184,7 @@ static inline int clear_extent_uptodate(struct extent_io_tree *tree, u64 start,
 static inline int set_extent_dirty(struct extent_io_tree *tree, u64 start,
 		u64 end, gfp_t mask)
 {
-	return set_extent_bit(tree, start, end, EXTENT_DIRTY, NULL, mask, NULL);
+	return set_extent_bit(tree, start, end, EXTENT_DIRTY, NULL, mask);
 }
 
 static inline int clear_extent_dirty(struct extent_io_tree *tree, u64 start,
@@ -206,7 +205,7 @@ static inline int set_extent_delalloc(struct extent_io_tree *tree, u64 start,
 {
 	return set_extent_bit(tree, start, end,
 			      EXTENT_DELALLOC | extra_bits,
-			      cached_state, GFP_NOFS, NULL);
+			      cached_state, GFP_NOFS);
 }
 
 static inline int set_extent_defrag(struct extent_io_tree *tree, u64 start,
@@ -214,21 +213,20 @@ static inline int set_extent_defrag(struct extent_io_tree *tree, u64 start,
 {
 	return set_extent_bit(tree, start, end,
 			      EXTENT_DELALLOC | EXTENT_DEFRAG,
-			      cached_state, GFP_NOFS, NULL);
+			      cached_state, GFP_NOFS);
 }
 
 static inline int set_extent_new(struct extent_io_tree *tree, u64 start,
 		u64 end)
 {
-	return set_extent_bit(tree, start, end, EXTENT_NEW, NULL, GFP_NOFS,
-			      NULL);
+	return set_extent_bit(tree, start, end, EXTENT_NEW, NULL, GFP_NOFS);
 }
 
 static inline int set_extent_uptodate(struct extent_io_tree *tree, u64 start,
 		u64 end, struct extent_state **cached_state, gfp_t mask)
 {
 	return set_extent_bit(tree, start, end, EXTENT_UPTODATE,
-			      cached_state, mask, NULL);
+			      cached_state, mask);
 }
 
 int find_first_extent_bit(struct extent_io_tree *tree, u64 start,

fs/btrfs/inode.c

@@ -2816,7 +2816,7 @@ static int btrfs_find_new_delalloc_bytes(struct btrfs_inode *inode,
 		ret = set_extent_bit(&inode->io_tree, search_start,
 				     search_start + em_len - 1,
 				     EXTENT_DELALLOC_NEW, cached_state,
-				     GFP_NOFS, NULL);
+				     GFP_NOFS);
 next:
 		search_start = extent_map_end(em);
 		free_extent_map(em);
@@ -4962,7 +4962,7 @@ int btrfs_truncate_block(struct btrfs_inode *inode, loff_t from, loff_t len,
 
 	if (only_release_metadata)
 		set_extent_bit(&inode->io_tree, block_start, block_end,
-			       EXTENT_NORESERVE, NULL, GFP_NOFS, NULL);
+			       EXTENT_NORESERVE, NULL, GFP_NOFS);
 
 out_unlock:
 	if (ret) {