btrfs: convert btrfs_inode_sectorsize to take btrfs_inode

It's counterintuitive to have a function named btrfs_inode_xxx which
takes a generic inode. Also move the function to btrfs_inode.h so that
it has access to the definition of struct btrfs_inode.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/btrfs_inode.h

@@ -217,6 +217,11 @@ struct btrfs_inode {
 	struct inode vfs_inode;
 };
 
+static inline u32 btrfs_inode_sectorsize(const struct btrfs_inode *inode)
+{
+	return inode->root->fs_info->sectorsize;
+}
+
 static inline struct btrfs_inode *BTRFS_I(const struct inode *inode)
 {
 	return container_of(inode, struct btrfs_inode, vfs_inode);

fs/btrfs/ctree.h

@@ -1197,10 +1197,6 @@ struct btrfs_file_private {
 	void *filldir_buf;
 };
 
-static inline u32 btrfs_inode_sectorsize(const struct inode *inode)
-{
-	return btrfs_sb(inode->i_sb)->sectorsize;
-}
 
 static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info)
 {

fs/btrfs/extent_io.c

@@ -4555,7 +4555,7 @@ next:
 static struct extent_map *get_extent_skip_holes(struct inode *inode,
 						u64 offset, u64 last)
 {
-	u64 sectorsize = btrfs_inode_sectorsize(inode);
+	u64 sectorsize = btrfs_inode_sectorsize(BTRFS_I(inode));
 	struct extent_map *em;
 	u64 len;
 
@@ -4736,8 +4736,8 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		goto out_free_ulist;
 	}
 
-	start = round_down(start, btrfs_inode_sectorsize(inode));
-	len = round_up(max, btrfs_inode_sectorsize(inode)) - start;
+	start = round_down(start, btrfs_inode_sectorsize(BTRFS_I(inode)));
+	len = round_up(max, btrfs_inode_sectorsize(BTRFS_I(inode))) - start;
 
 	/*
 	 * lookup the last file extent.  We're not using i_size here

fs/btrfs/file.c

@@ -2901,9 +2901,9 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
 		goto out_only_mutex;
 	}
 
-	lockstart = round_up(offset, btrfs_inode_sectorsize(inode));
+	lockstart = round_up(offset, btrfs_inode_sectorsize(BTRFS_I(inode)));
 	lockend = round_down(offset + len,
-			     btrfs_inode_sectorsize(inode)) - 1;
+			     btrfs_inode_sectorsize(BTRFS_I(inode))) - 1;
 	same_block = (BTRFS_BYTES_TO_BLKS(fs_info, offset))
 		== (BTRFS_BYTES_TO_BLKS(fs_info, offset + len - 1));
 	/*
@@ -3108,7 +3108,7 @@ enum {
 static int btrfs_zero_range_check_range_boundary(struct inode *inode,
 						 u64 offset)
 {
-	const u64 sectorsize = btrfs_inode_sectorsize(inode);
+	const u64 sectorsize = btrfs_inode_sectorsize(BTRFS_I(inode));
 	struct extent_map *em;
 	int ret;
 
@@ -3138,7 +3138,7 @@ static int btrfs_zero_range(struct inode *inode,
 	struct extent_changeset *data_reserved = NULL;
 	int ret;
 	u64 alloc_hint = 0;
-	const u64 sectorsize = btrfs_inode_sectorsize(inode);
+	const u64 sectorsize = btrfs_inode_sectorsize(BTRFS_I(inode));
 	u64 alloc_start = round_down(offset, sectorsize);
 	u64 alloc_end = round_up(offset + len, sectorsize);
 	u64 bytes_to_reserve = 0;
@@ -3319,7 +3319,7 @@ static long btrfs_fallocate(struct file *file, int mode,
 	u64 locked_end;
 	u64 actual_end = 0;
 	struct extent_map *em;
-	int blocksize = btrfs_inode_sectorsize(inode);
+	int blocksize = btrfs_inode_sectorsize(BTRFS_I(inode));
 	int ret;
 
 	alloc_start = round_down(offset, blocksize);

fs/btrfs/ordered-data.c

@@ -870,7 +870,7 @@ int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr,
 	struct btrfs_ordered_inode_tree *tree = &BTRFS_I(inode)->ordered_tree;
 	unsigned long num_sectors;
 	unsigned long i;
-	u32 sectorsize = btrfs_inode_sectorsize(inode);
+	u32 sectorsize = btrfs_inode_sectorsize(BTRFS_I(inode));
 	const u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
 	int index = 0;
 

fs/btrfs/reflink.c

@@ -52,7 +52,7 @@ static int copy_inline_to_page(struct inode *inode,
 			       const u64 datal,
 			       const u8 comp_type)
 {
-	const u64 block_size = btrfs_inode_sectorsize(inode);
+	const u64 block_size = btrfs_inode_sectorsize(BTRFS_I(inode));
 	const u64 range_end = file_offset + block_size - 1;
 	const size_t inline_size = size - btrfs_file_extent_calc_inline_size(0);
 	char *data_start = inline_data + btrfs_file_extent_calc_inline_size(0);