btrfs: Get rid of the confusing btrfs_file_extent_inline_len

[mirror_ubuntu-bionic-kernel.git] / fs / btrfs / file.c

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 4f54b40d11f57cc25a2e669be491f1dc91be3ec1..e489b879d22654c9dfcf854a4922f2f118a3f1ed 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -854,8 +854,7 @@ next_slot:
                                btrfs_file_extent_num_bytes(leaf, fi);
                } else if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
                        extent_end = key.offset +
-                               btrfs_file_extent_inline_len(leaf,
-                                                    path->slots[0], fi);
+                               btrfs_file_extent_ram_bytes(leaf, fi);
                } else {
                        /* can't happen */
                        BUG();
@@ -1912,7 +1911,7 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb,
        bool sync = (file->f_flags & O_DSYNC) || IS_SYNC(file->f_mapping->host);
        ssize_t err;
        loff_t pos;
-       size_t count = iov_iter_count(from);
+       size_t count;
        loff_t oldsize;
        int clean_page = 0;
 
@@ -1920,9 +1919,10 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb,
            (iocb->ki_flags & IOCB_NOWAIT))
                return -EOPNOTSUPP;
 
-       if (!inode_trylock(inode)) {
-               if (iocb->ki_flags & IOCB_NOWAIT)
+       if (iocb->ki_flags & IOCB_NOWAIT) {
+               if (!inode_trylock(inode))
                        return -EAGAIN;
+       } else {
                inode_lock(inode);
        }
 
@@ -1933,6 +1933,7 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb,
        }
 
        pos = iocb->ki_pos;
+       count = iov_iter_count(from);
        if (iocb->ki_flags & IOCB_NOWAIT) {
                /*
                 * We will allocate space in case nodatacow is not set,