Btrfs: Take the extent lock before dropping the delalloc bits (d99cb30a) · Commits · e / devices / android_kernel_xiaomi_sm6125

fs/btrfs/file.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -765,9 +765,13 @@ static int prepare_pages(struct btrfs_root root, struct file file,
		if (start_pos < inode->i_size) {
		u64 last_pos;
		last_pos = (index + num_pages) << PAGE_CACHE_SHIFT;
		lock_extent(&BTRFS_I(inode)->io_tree,
		start_pos, last_pos - 1, GFP_NOFS);
		clear_extent_bits(&BTRFS_I(inode)->io_tree, start_pos,
		last_pos - 1, EXTENT_DIRTY \| EXTENT_DELALLOC,
		GFP_NOFS);
		unlock_extent(&BTRFS_I(inode)->io_tree,
		start_pos, last_pos - 1, GFP_NOFS);
		}
		return 0;
		}