diff options
Diffstat (limited to 'fs/exofs/ore.c')
| -rw-r--r-- | fs/exofs/ore.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c index 92157b6..0e2a835 100644 --- a/fs/exofs/ore.c +++ b/fs/exofs/ore.c @@ -545,17 +545,19 @@ void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset, /* "H - (N * U)" is just "H % U" so it's bound to u32 */ u32 C = (u32)(H - (N * U)) / stripe_unit + G * group_width; + u32 first_dev = C - C % group_width; div_u64_rem(file_offset, stripe_unit, &si->unit_off); si->obj_offset = si->unit_off + (N * stripe_unit) + (M * group_depth * stripe_unit); + si->cur_comp = C - first_dev; + si->cur_pg = si->unit_off / PAGE_SIZE; if (parity) { u32 LCMdP = lcm(group_width, parity) / parity; /* R = N % LCMdP; */ u32 RxP = (N % LCMdP) * parity; - u32 first_dev = C - C % group_width; si->par_dev = (group_width + group_width - parity - RxP) % group_width + first_dev; @@ -670,9 +672,7 @@ static int _prepare_for_striping(struct ore_io_state *ios) BUG_ON(length > si->length); - dev_order = _dev_order(devs_in_group, mirrors_p1, si->par_dev, dev); - si->cur_comp = dev_order; - si->cur_pg = si->unit_off / PAGE_SIZE; + dev_order = si->cur_comp; while (length) { struct ore_per_dev_state *per_dev = @@ -718,6 +718,8 @@ static int _prepare_for_striping(struct ore_io_state *ios) * stripe. then operate on parity dev. */ dev = si->par_dev; + /* If last stripe operate on parity comp */ + si->cur_comp = group_width - ios->layout->parity; } per_dev = &ios->per_dev[dev - first_dev]; if (!per_dev->length) { |
