diff options
Diffstat (limited to 'fs/exofs')
| -rw-r--r-- | fs/exofs/ios.c | 22 |
1 files changed, 7 insertions, 15 deletions
diff --git a/fs/exofs/ios.c b/fs/exofs/ios.c index 4337cad..5bb4737 100644 --- a/fs/exofs/ios.c +++ b/fs/exofs/ios.c @@ -392,20 +392,19 @@ static int _add_stripe_unit(struct exofs_io_state *ios, unsigned *cur_pg, } static int _prepare_one_group(struct exofs_io_state *ios, u64 length, - struct _striping_info *si, unsigned first_comp) + struct _striping_info *si) { unsigned stripe_unit = ios->layout->stripe_unit; unsigned mirrors_p1 = ios->layout->mirrors_p1; unsigned devs_in_group = ios->layout->group_width * mirrors_p1; unsigned dev = si->dev; unsigned first_dev = dev - (dev % devs_in_group); - unsigned comp = first_comp + (dev - first_dev); unsigned max_comp = ios->numdevs ? ios->numdevs - mirrors_p1 : 0; unsigned cur_pg = ios->pages_consumed; int ret = 0; while (length) { - struct exofs_per_dev_state *per_dev = &ios->per_dev[comp]; + struct exofs_per_dev_state *per_dev = &ios->per_dev[dev]; unsigned cur_len, page_off = 0; if (!per_dev->length) { @@ -424,11 +423,8 @@ static int _prepare_one_group(struct exofs_io_state *ios, u64 length, cur_len = stripe_unit; } - if (max_comp < comp) - max_comp = comp; - - dev += mirrors_p1; - dev = (dev % devs_in_group) + first_dev; + if (max_comp < dev) + max_comp = dev; } else { cur_len = stripe_unit; } @@ -440,8 +436,8 @@ static int _prepare_one_group(struct exofs_io_state *ios, u64 length, if (unlikely(ret)) goto out; - comp += mirrors_p1; - comp = (comp % devs_in_group) + first_comp; + dev += mirrors_p1; + dev = (dev % devs_in_group) + first_dev; length -= cur_len; } @@ -457,7 +453,6 @@ static int _prepare_for_striping(struct exofs_io_state *ios) struct _striping_info si; unsigned devs_in_group = ios->layout->group_width * ios->layout->mirrors_p1; - unsigned first_comp = 0; int ret = 0; _calc_stripe_info(ios, ios->offset, &si); @@ -482,7 +477,7 @@ static int _prepare_for_striping(struct exofs_io_state *ios) if (length < si.group_length) si.group_length = length; - ret = _prepare_one_group(ios, si.group_length, &si, first_comp); + ret = _prepare_one_group(ios, si.group_length, &si); if (unlikely(ret)) goto out; @@ -496,9 +491,6 @@ static int _prepare_for_striping(struct exofs_io_state *ios) si.dev = (si.dev - (si.dev % devs_in_group)) + devs_in_group; si.dev %= ios->layout->s_numdevs; - - first_comp += devs_in_group; - first_comp %= ios->layout->s_numdevs; } out: |