btrfs: kill unused writepage_io_hook callback
It seems to be long time unused, since 2008 and
6885f308b5570 ("Btrfs: Misc 2.6.25 updates").
Propagating the removal touches some code but has no functional effect.
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index d247fc0..d22b077 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3368,6 +3368,8 @@
while (cur <= end) {
u64 em_end;
+ unsigned long max_nr;
+
if (cur >= i_size) {
if (tree->ops && tree->ops->writepage_end_io_hook)
tree->ops->writepage_end_io_hook(page, cur,
@@ -3423,32 +3425,23 @@
continue;
}
- if (tree->ops && tree->ops->writepage_io_hook) {
- ret = tree->ops->writepage_io_hook(page, cur,
- cur + iosize - 1);
- } else {
- ret = 0;
+ max_nr = (i_size >> PAGE_SHIFT) + 1;
+
+ set_range_writeback(tree, cur, cur + iosize - 1);
+ if (!PageWriteback(page)) {
+ btrfs_err(BTRFS_I(inode)->root->fs_info,
+ "page %lu not writeback, cur %llu end %llu",
+ page->index, cur, end);
}
- if (ret) {
+
+ ret = submit_extent_page(write_flags, tree, wbc, page,
+ sector, iosize, pg_offset,
+ bdev, &epd->bio, max_nr,
+ end_bio_extent_writepage,
+ 0, 0, 0, false);
+ if (ret)
SetPageError(page);
- } else {
- unsigned long max_nr = (i_size >> PAGE_SHIFT) + 1;
- set_range_writeback(tree, cur, cur + iosize - 1);
- if (!PageWriteback(page)) {
- btrfs_err(BTRFS_I(inode)->root->fs_info,
- "page %lu not writeback, cur %llu end %llu",
- page->index, cur, end);
- }
-
- ret = submit_extent_page(write_flags, tree, wbc, page,
- sector, iosize, pg_offset,
- bdev, &epd->bio, max_nr,
- end_bio_extent_writepage,
- 0, 0, 0, false);
- if (ret)
- SetPageError(page);
- }
cur = cur + iosize;
pg_offset += iosize;
nr++;