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btrfs: tests: Use BTRFS_MAX_EXTENT_SIZE to replace the intermediate number 

In extent-io self test, we need 2 ordered extents at its maximum size to
do the test.

Instead of using the intermediate numbers, use BTRFS_MAX_EXTENT_SIZE for
@max_bytes, and twice @max_bytes for @total_dirty.  This should explain
why we need all these magic numbers and prevent people to modify them by
accident.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2018-11-03 17:24:52 +08:00 committed by David Sterba
parent ed46ff3d42
commit d9cb2459b2
1 changed files with 3 additions and 2 deletions
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5
fs/btrfs/tests/extent-io-tests.c
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@ -62,8 +62,9 @@ static int test_find_delalloc(u32 sectorsize)
struct page *page;
struct page *locked_page = NULL;
unsigned long index = 0;
u64 total_dirty = SZ_256M;
u64 max_bytes = SZ_128M;
/* In this test we need at least 2 file extents at its maximum size */
u64 max_bytes = BTRFS_MAX_EXTENT_SIZE;
u64 total_dirty = 2 * max_bytes;
u64 start, end, test_start;
u64 found;
int ret = -EINVAL;