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| author |   David Sterba <dsterba@suse.com> | 2019-05-17 11:43:45 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-07-01 13:34:58 +0200 |
| commit | cff8267228c14e56ded8407787d4328603423b3e (patch) | |
| tree | 401220cd4851b01ecfb5d9694452413e710896ef /fs/btrfs/scrub.c | |
| parent | btrfs: constify map parameter for nr_parity_stripes and nr_data_stripes (diff) | |
| download | linux-dev-cff8267228c14e56ded8407787d4328603423b3e.tar.xz linux-dev-cff8267228c14e56ded8407787d4328603423b3e.zip | |
btrfs: read number of data stripes from map only once
There are several places that call nr_data_stripes, but this value does
not change.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/scrub.c')
| -rw-r--r-- | fs/btrfs/scrub.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 0827bdf4faf1..e51929a55af4 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -2660,18 +2660,18 @@ static int get_raid56_logic_offset(u64 physical, int num, u64 last_offset; u32 stripe_index; u32 rot; + const int data_stripes = nr_data_stripes(map); - last_offset = (physical - map->stripes[num].physical) * - nr_data_stripes(map); + last_offset = (physical - map->stripes[num].physical) * data_stripes; if (stripe_start) *stripe_start = last_offset; *offset = last_offset; - for (i = 0; i < nr_data_stripes(map); i++) { + for (i = 0; i < data_stripes; i++) { *offset = last_offset + i * map->stripe_len; stripe_nr = div64_u64(*offset, map->stripe_len); - stripe_nr = div_u64(stripe_nr, nr_data_stripes(map)); + stripe_nr = div_u64(stripe_nr, data_stripes); /* Work out the disk rotation on this stripe-set */ stripe_nr = div_u64_rem(stripe_nr, map->num_stripes, &rot); |