From 1f80e4db0fcb3bdc2be51389baf558a9519682f0 Mon Sep 17 00:00:00 2001 From: Yan Zheng Date: Fri, 19 Dec 2008 10:59:04 -0500 Subject: [PATCH] Btrfs: set EXTENT_BOUNDARY bit before marking extent delalloc. There is a race in relocate_inode_pages, it happens when find_delalloc_range finds the delalloc extent before the boundary bit is set. Thank you, Signed-off-by: Yan Zheng --- fs/btrfs/extent-tree.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 274bb91efa22..fe0e59ab33cc 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3994,10 +3994,10 @@ static int noinline relocate_inode_pages(struct inode *inode, u64 start, } set_page_extent_mapped(page); - btrfs_set_extent_delalloc(inode, page_start, page_end); if (i == first_index) set_extent_bits(io_tree, page_start, page_end, EXTENT_BOUNDARY, GFP_NOFS); + btrfs_set_extent_delalloc(inode, page_start, page_end); set_page_dirty(page); total_dirty++; @@ -4405,7 +4405,7 @@ static int noinline get_new_locations(struct inode *reloc_inode, path->slots[0]++; } - WARN_ON(cur_pos + offset > last_byte); + BUG_ON(cur_pos + offset > last_byte); if (cur_pos + offset < last_byte) { ret = -ENOENT; goto out; @@ -5712,7 +5712,6 @@ int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start) if (pass == 0) { btrfs_wait_ordered_range(reloc_inode, 0, (u64)-1); invalidate_mapping_pages(reloc_inode->i_mapping, 0, -1); - WARN_ON(reloc_inode->i_mapping->nrpages); } if (total_found > 0) { -- GitLab