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bcachefs: Ensure we only allocate one EC bucket per writepoint

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Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2020-07-23 11:31:01 -04:00 committed by Kent Overstreet
parent 33e339619f
commit d3a2b5d809
1 changed files with 15 additions and 11 deletions
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26
fs/bcachefs/alloc_foreground.c
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@ -578,18 +578,22 @@ open_bucket_add_buckets(struct bch_fs *c,
__clear_bit(ob->ptr.dev, devs.d);
if (erasure_code) {
get_buckets_from_writepoint(c, ptrs, wp, &devs,
nr_replicas, nr_effective,
have_cache, flags, true);
if (*nr_effective >= nr_replicas)
return 0;
if (!ec_open_bucket(c, ptrs)) {
get_buckets_from_writepoint(c, ptrs, wp, &devs,
nr_replicas, nr_effective,
have_cache, flags, true);
if (*nr_effective >= nr_replicas)
return 0;
}
bucket_alloc_from_stripe(c, ptrs, wp, &devs,
target, erasure_code,
nr_replicas, nr_effective,
have_cache, flags);
if (*nr_effective >= nr_replicas)
return 0;
if (!ec_open_bucket(c, ptrs)) {
bucket_alloc_from_stripe(c, ptrs, wp, &devs,
target, erasure_code,
nr_replicas, nr_effective,
have_cache, flags);
if (*nr_effective >= nr_replicas)
return 0;
}
}
get_buckets_from_writepoint(c, ptrs, wp, &devs,