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Btrfs: set EXTENT_BOUNDARY bit before marking extent delalloc.

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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 <zheng.yan@oracle.com>
This commit is contained in:
Yan Zheng 2008-12-19 10:59:04 -05:00 committed by Chris Mason
parent 34bf63c4dd
commit 1f80e4db0f
1 changed files with 2 additions and 3 deletions
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5
fs/btrfs/extent-tree.c
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@ -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) {