RepoMirrors/ceph
1
0
Fork 0
mirror of https://github.com/ceph/ceph synced 2025-02-23 19:17:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

os/bluestore/BlueFS: replace claim_append with claim_append_piecewise to reduce memory copy.

Browse Source 
Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>
This commit is contained in:
Jianpeng Ma 2017-06-21 04:42:02 +08:00
parent 434656c610
commit 717809fafc
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/os/bluestore/BlueFS.cc
View File

@ -1554,7 +1554,7 @@ int BlueFS::_flush_range(FileWriter *h, uint64_t offset, uint64_t length)
dout(20) << __func__ << " using partial tail 0x"
<< std::hex << partial << std::dec << dendl;
assert(h->tail_block.length() == partial);
bl.claim_append(h->tail_block);
bl.claim_append_piecewise(h->tail_block);
x_off -= partial;
offset -= partial;
length += partial;
@ -1566,11 +1566,11 @@ int BlueFS::_flush_range(FileWriter *h, uint64_t offset, uint64_t length)
}
}
if (length == partial + h->buffer.length()) {
bl.claim_append(h->buffer);
bl.claim_append_piecewise(h->buffer);
} else {
bufferlist t;
t.substr_of(h->buffer, 0, length);
bl.claim_append(t);
h->buffer.splice(0, length, &t);
bl.claim_append_piecewise(t);
t.substr_of(h->buffer, length, h->buffer.length() - length);
h->buffer.swap(t);
dout(20) << " leaving 0x" << std::hex << h->buffer.length() << std::dec