Update bcachefs sources to c819a7757912 bcachefs: kill write_(begin|end)

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 0 insertions, 128 deletions

diff --git a/libbcachefs/fs-io-buffered.c b/libbcachefs/fs-io-buffered.c
index fe684adc..bfa1307b 100644
--- a/libbcachefs/fs-io-buffered.c
+++ b/libbcachefs/fs-io-buffered.c
@@ -729,134 +729,6 @@ int bch2_writepages(struct address_space *mapping, struct writeback_control *wbc
 
 /* buffered writes: */
 
-int bch2_write_begin(const struct kiocb *iocb, struct address_space *mapping,
-		     loff_t pos, unsigned len,
-		     struct folio **foliop, void **fsdata)
-{
-	struct bch_inode_info *inode = to_bch_ei(mapping->host);
-	struct bch_fs *c = inode->v.i_sb->s_fs_info;
-	struct bch2_folio_reservation *res;
-	struct folio *folio;
-	unsigned offset;
-	int ret = -ENOMEM;
-
-	res = kmalloc(sizeof(*res), GFP_KERNEL);
-	if (!res)
-		return -ENOMEM;
-
-	bch2_folio_reservation_init(c, inode, res);
-	*fsdata = res;
-
-	bch2_pagecache_add_get(inode);
-
-	folio = __filemap_get_folio(mapping, pos >> PAGE_SHIFT,
-				    FGP_WRITEBEGIN | fgf_set_order(len),
-				    mapping_gfp_mask(mapping));
-	if (IS_ERR(folio))
-		goto err_unlock;
-
-	offset = pos - folio_pos(folio);
-	len = min_t(size_t, len, folio_end_pos(folio) - pos);
-
-	if (folio_test_uptodate(folio))
-		goto out;
-
-	/* If we're writing entire folio, don't need to read it in first: */
-	if (!offset && len == folio_size(folio))
-		goto out;
-
-	if (!offset && pos + len >= inode->v.i_size) {
-		folio_zero_segment(folio, len, folio_size(folio));
-		flush_dcache_folio(folio);
-		goto out;
-	}
-
-	if (folio_pos(folio) >= inode->v.i_size) {
-		folio_zero_segments(folio, 0, offset, offset + len, folio_size(folio));
-		flush_dcache_folio(folio);
-		goto out;
-	}
-readpage:
-	ret = bch2_read_single_folio(folio, mapping);
-	if (ret)
-		goto err;
-out:
-	ret = bch2_folio_set(c, inode_inum(inode), &folio, 1);
-	if (ret)
-		goto err;
-
-	ret = bch2_folio_reservation_get(c, inode, folio, res, offset, len);
-	if (ret) {
-		if (!folio_test_uptodate(folio)) {
-			/*
-			 * If the folio hasn't been read in, we won't know if we
-			 * actually need a reservation - we don't actually need
-			 * to read here, we just need to check if the folio is
-			 * fully backed by uncompressed data:
-			 */
-			goto readpage;
-		}
-
-		goto err;
-	}
-
-	*foliop = folio;
-	return 0;
-err:
-	folio_unlock(folio);
-	folio_put(folio);
-err_unlock:
-	bch2_pagecache_add_put(inode);
-	kfree(res);
-	*fsdata = NULL;
-	return bch2_err_class(ret);
-}
-
-int bch2_write_end(const struct kiocb *iocb, struct address_space *mapping,
-		   loff_t pos, unsigned len, unsigned copied,
-		   struct folio *folio, void *fsdata)
-{
-	struct bch_inode_info *inode = to_bch_ei(mapping->host);
-	struct bch_fs *c = inode->v.i_sb->s_fs_info;
-	struct bch2_folio_reservation *res = fsdata;
-	unsigned offset = pos - folio_pos(folio);
-
-	BUG_ON(offset + copied > folio_size(folio));
-
-	if (unlikely(copied < len && !folio_test_uptodate(folio))) {
-		/*
-		 * The folio needs to be read in, but that would destroy
-		 * our partial write - simplest thing is to just force
-		 * userspace to redo the write:
-		 */
-		folio_zero_range(folio, 0, folio_size(folio));
-		flush_dcache_folio(folio);
-		copied = 0;
-	}
-
-	scoped_guard(spinlock, &inode->v.i_lock)
-		if (pos + copied > inode->v.i_size)
-			i_size_write(&inode->v, pos + copied);
-
-	if (copied) {
-		if (!folio_test_uptodate(folio))
-			folio_mark_uptodate(folio);
-
-		bch2_set_folio_dirty(c, inode, folio, res, offset, copied);
-
-		inode->ei_last_dirtied = (unsigned long) current;
-	}
-
-	folio_unlock(folio);
-	folio_put(folio);
-	bch2_pagecache_add_put(inode);
-
-	bch2_folio_reservation_put(c, inode, res);
-	kfree(res);
-
-	return copied;
-}
-
 static noinline void folios_trunc(folios *fs, struct folio **fi)
 {
 	while (fs->data + fs->nr > fi) {