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Btrfs: Search for all ordered extents that could span across a page

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In subpagesize-blocksize scenario it is not sufficient to search using the
first byte of the page to make sure that there are no ordered extents
present across the page. Fix this.

Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Chandan Rajendra
2016-01-21 15:55:58 +05:30
committed by David Sterba
parent d0b7da88f6
commit dbfdb6d1b3
2 changed files with 20 additions and 8 deletions
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3
fs/btrfs/extent_io.c
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@@ -3186,7 +3186,8 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
while (1) {
lock_extent(tree, start, end);
ordered = btrfs_lookup_ordered_extent(inode, start);
ordered = btrfs_lookup_ordered_range(inode, start,
PAGE_CACHE_SIZE);
if (!ordered)
break;
unlock_extent(tree, start, end);