btrfs: Remove root argument from cow_file_range_inline

This argument is always set to the root of the inode, which is also
passed. So let's get a reference inside the function and simplify
the arg list.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 6dbdde9a798ed6a9fc62b2ec881ddf0d25c0ab4b..ce65acafe7bb75b4306bd4fcd34ee0e59f1077f0 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -276,12 +276,12 @@ fail:
  * does the checks required to make sure the data is small enough
  * to fit as an inline extent.
  */
-static noinline int cow_file_range_inline(struct btrfs_root *root,
-                                         struct inode *inode, u64 start,
+static noinline int cow_file_range_inline(struct inode *inode, u64 start,
                                          u64 end, size_t compressed_size,
                                          int compress_type,
                                          struct page **compressed_pages)
 {
+       struct btrfs_root *root = BTRFS_I(inode)->root;
        struct btrfs_fs_info *fs_info = root->fs_info;
        struct btrfs_trans_handle *trans;
        u64 isize = i_size_read(inode);
@@ -457,7 +457,6 @@ static noinline void compress_file_range(struct inode *inode,
                                        int *num_added)
 {
        struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
-       struct btrfs_root *root = BTRFS_I(inode)->root;
        u64 blocksize = fs_info->sectorsize;
        u64 actual_end;
        u64 isize = i_size_read(inode);
@@ -579,11 +578,11 @@ cont:
                        /* we didn't compress the entire range, try
                         * to make an uncompressed inline extent.
                         */
-                       ret = cow_file_range_inline(root, inode, start, end,
-                                           0, BTRFS_COMPRESS_NONE, NULL);
+                       ret = cow_file_range_inline(inode, start, end, 0,
+                                                   BTRFS_COMPRESS_NONE, NULL);
                } else {
                        /* try making a compressed inline extent */
-                       ret = cow_file_range_inline(root, inode, start, end,
+                       ret = cow_file_range_inline(inode, start, end,
                                                    total_compressed,
                                                    compress_type, pages);
                }
@@ -983,8 +982,8 @@ static noinline int cow_file_range(struct inode *inode,
 
        if (start == 0) {
                /* lets try to make an inline extent */
-               ret = cow_file_range_inline(root, inode, start, end, 0,
-                                       BTRFS_COMPRESS_NONE, NULL);
+               ret = cow_file_range_inline(inode, start, end, 0,
+                                           BTRFS_COMPRESS_NONE, NULL);
                if (ret == 0) {
                        /*
                         * We use DO_ACCOUNTING here because we need the