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Btrfs: add tests for find_lock_delalloc_range

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So both Liu and I made huge messes of find_lock_delalloc_range trying to fix
stuff, me first by fixing extent size, then him by fixing something I broke and
then me again telling him to fix it a different way.  So this is obviously a
candidate for some testing.  This patch adds a pseudo fs so we can allocate fake
inodes for tests that need an inode or pages.  Then it addes a bunch of tests to
make sure find_lock_delalloc_range is acting the way it is supposed to.  With
this patch and all of our previous patches to find_lock_delalloc_range I am sure
it is working as expected now.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Josef Bacik
2013-10-09 12:00:56 -04:00
committed by Chris Mason
parent 857cc2fc29
commit 294e30fee3
9 changed files with 389 additions and 9 deletions
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9
fs/btrfs/extent_io.c
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@@ -1598,11 +1598,10 @@ done:
*
* 1 is returned if we find something, 0 if nothing was in the tree
*/
static noinline u64 find_lock_delalloc_range(struct inode *inode,
struct extent_io_tree *tree,
struct page *locked_page,
u64 *start, u64 *end,
u64 max_bytes)
STATIC u64 find_lock_delalloc_range(struct inode *inode,
struct extent_io_tree *tree,
struct page *locked_page, u64 *start,
u64 *end, u64 max_bytes)
{
u64 delalloc_start;
u64 delalloc_end;