diff options
| author | Zhao Lei <[email protected]> | 2015-03-03 20:38:46 +0800 |
|---|---|---|
| committer | Chris Mason <[email protected]> | 2016-01-20 07:22:16 -0800 |
| commit | b7178a5f0372a51260cf6e74d828e315e43dfc86 (patch) | |
| tree | 2791d81ab923fd046de7b8f944714b7079c72d97 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | bfca9a6d4b1322ba36235e8a652f05a9668ef59b (diff) | |
btrfs: Use unified stripe_page's index calculation
We are using different index calculation method for stripe_page in
current code:
1: (rbio->stripe_len / PAGE_CACHE_SIZE) * stripe_index + page_index
2: DIV_ROUND_UP(rbio->stripe_len, PAGE_CACHE_SIZE) * stripe_index + page_index
3: DIV_ROUND_UP(rbio->stripe_len * stripe_index, PAGE_CACHE_SIZE) + page_index
...
They can get same result when stripe_len align to PAGE_CACHE_SIZE,
this is why current code can work, intruduce and use a common function
for calculation is a better choose.
Signed-off-by: Zhao Lei <[email protected]>
Signed-off-by: Chris Mason <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions