Btrfs: Remove unused variable 'last_index' in file.c

The variable 'last_index' is calculated in the __btrfs_buffered_write
function and passed as a parameter to the prepare_pages function,
but is not used anywhere in the prepare_pages function.

Remove instances of 'last_index' in these functions.

Signed-off-by: Mitch Harder <mitch.harder@sabayonlinux.org>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 7f134a730efb64c13ebdf0556e382611eae259bb..010aec8be824611b700a340f5ecd86dfb2705101 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1059,7 +1059,7 @@ static int prepare_uptodate_page(struct page *page, u64 pos)
 static noinline int prepare_pages(struct btrfs_root *root, struct file *file,
                         struct page **pages, size_t num_pages,
                         loff_t pos, unsigned long first_index,
-                        unsigned long last_index, size_t write_bytes)
+                        size_t write_bytes)
 {
        struct extent_state *cached_state = NULL;
        int i;
@@ -1159,7 +1159,6 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
        struct btrfs_root *root = BTRFS_I(inode)->root;
        struct page **pages = NULL;
        unsigned long first_index;
-       unsigned long last_index;
        size_t num_written = 0;
        int nrptrs;
        int ret = 0;
@@ -1172,7 +1171,6 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
                return -ENOMEM;
 
        first_index = pos >> PAGE_CACHE_SHIFT;
-       last_index = (pos + iov_iter_count(i)) >> PAGE_CACHE_SHIFT;
 
        while (iov_iter_count(i) > 0) {
                size_t offset = pos & (PAGE_CACHE_SIZE - 1);
@@ -1206,8 +1204,7 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
                 * contents of pages from loop to loop
                 */
                ret = prepare_pages(root, file, pages, num_pages,
-                                   pos, first_index, last_index,
-                                   write_bytes);
+                                   pos, first_index, write_bytes);
                if (ret) {
                        btrfs_delalloc_release_space(inode,
                                        num_pages << PAGE_CACHE_SHIFT);