btrfs: drop get_extent from extent_page_data

Previous patches cleaned up all places where
extent_page_data::get_extent was set and it was btrfs_get_extent all the
time, so we can simply call that instead.

This also reduces size of extent_page_data by 8 bytes which has positive
effect on stack consumption on various functions on the write out path.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 7754124b07b82d592459118e60f89097d020fa30..3ecd3ab73981f26f8adf3011f2c3932553c03dd8 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -109,8 +109,6 @@ struct tree_entry {
 struct extent_page_data {
        struct bio *bio;
        struct extent_io_tree *tree;
-       get_extent_t *get_extent;
-
        /* tells writepage not to lock the state bits for this range
         * it still does the unlocking
         */
@@ -3373,7 +3371,7 @@ static noinline_for_stack int __extent_writepage_io(struct inode *inode,
                                                         page_end, NULL, 1);
                        break;
                }
-               em = epd->get_extent(BTRFS_I(inode), page, pg_offset, cur,
+               em = btrfs_get_extent(BTRFS_I(inode), page, pg_offset, cur,
                                     end - cur + 1, 1);
                if (IS_ERR_OR_NULL(em)) {
                        SetPageError(page);
@@ -4064,7 +4062,6 @@ int extent_write_full_page(struct extent_io_tree *tree, struct page *page,
        struct extent_page_data epd = {
                .bio = NULL,
                .tree = tree,
-               .get_extent = btrfs_get_extent,
                .extent_locked = 0,
                .sync_io = wbc->sync_mode == WB_SYNC_ALL,
        };
@@ -4087,7 +4084,6 @@ int extent_write_locked_range(struct extent_io_tree *tree, struct inode *inode,
        struct extent_page_data epd = {
                .bio = NULL,
                .tree = tree,
-               .get_extent = btrfs_get_extent,
                .extent_locked = 1,
                .sync_io = mode == WB_SYNC_ALL,
        };
@@ -4125,7 +4121,6 @@ int extent_writepages(struct extent_io_tree *tree,
        struct extent_page_data epd = {
                .bio = NULL,
                .tree = tree,
-               .get_extent = btrfs_get_extent,
                .extent_locked = 0,
                .sync_io = wbc->sync_mode == WB_SYNC_ALL,
        };