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osd/PGLog: avoid return by value on ginormous log

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Signed-off-by: Sage Weil <sage@redhat.com>
This commit is contained in:
Sage Weil 2017-02-17 12:46:38 -05:00
parent 643ae42cf2
commit a6ead99877
2 changed files with 9 additions and 8 deletions
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10
src/osd/PGLog.cc
View File

@ -31,16 +31,16 @@ static ostream& _prefix(std::ostream *_dout, const PGLog *pglog)
//////////////////// PGLog::IndexedLog ////////////////////
PGLog::IndexedLog PGLog::IndexedLog::split_out_child(
void PGLog::IndexedLog::split_out_child(
pg_t child_pgid,
unsigned split_bits)
unsigned split_bits,
PGLog::IndexedLog *target)
{
unindex();
IndexedLog ret(pg_log_t::split_out_child(child_pgid, split_bits));
*target = pg_log_t::split_out_child(child_pgid, split_bits);
index();
ret.index();
target->index();
reset_rollback_info_trimmed_to_riter();
return ret;
}
void PGLog::IndexedLog::trim(

7
src/osd/PGLog.h
View File

@ -213,9 +213,10 @@ public:
index();
}
IndexedLog split_out_child(
void split_out_child(
pg_t child_pgid,
unsigned split_bits);
unsigned split_bits,
IndexedLog *target);
void zero() {
// we must have already trimmed the old entries
@ -655,7 +656,7 @@ public:
pg_t child_pgid,
unsigned split_bits,
PGLog *opg_log) {
opg_log->log = log.split_out_child(child_pgid, split_bits);
log.split_out_child(child_pgid, split_bits, &opg_log->log);
missing.split_into(child_pgid, split_bits, &(opg_log->missing));
opg_log->mark_dirty_to(eversion_t::max());
mark_dirty_to(eversion_t::max());