btrfs: Simplify btrfs_file_llseek

Handle SEEK_END/SEEK_CUR in a single 'default' case by directly
returning from generic_file_llseek. This makes the 'out' label
redundant.  Finally return directly the vale from vfs_setpos. No
semantic changes.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
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/file.c b/fs/btrfs/file.c
index 35cfc73..9492122 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -3422,10 +3422,8 @@ static loff_t btrfs_file_llseek(struct file *file, loff_t offset, int whence)
        int ret;
 
        switch (whence) {
-       case SEEK_END:
-       case SEEK_CUR:
-               offset = generic_file_llseek(file, offset, whence);
-               goto out;
+       default:
+               return generic_file_llseek(file, offset, whence);
        case SEEK_DATA:
        case SEEK_HOLE:
                inode_lock_shared(inode);
@@ -3436,9 +3434,7 @@ static loff_t btrfs_file_llseek(struct file *file, loff_t offset, int whence)
                        return ret;
        }
 
-       offset = vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
-out:
-       return offset;
+       return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
 }
 
 static int btrfs_file_open(struct inode *inode, struct file *filp)