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| author | kib <kib@FreeBSD.org> | 2011-12-23 09:09:42 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2011-12-23 09:09:42 +0000 |
| commit | c2a7f1025365e002b4b0640500da172643227fb5 (patch) | |
| tree | af24cd87039958ebef984fd0db3750b95269b464 /lib/libc/net | |
| parent | 557be54d6324f110c3b92f5ee4916cf23409d5ed (diff) | |
| download | FreeBSD-src-c2a7f1025365e002b4b0640500da172643227fb5.zip FreeBSD-src-c2a7f1025365e002b4b0640500da172643227fb5.tar.gz | |
Optimize the common case of msyncing the whole file mapping with
MS_SYNC flag. The system must guarantee that all writes are finished
before syscalls returned. Schedule the writes in async mode, which is
much faster and allows the clustering to occur. Wait for writes using
VOP_FSYNC(), since we are syncing the whole file mapping.
Potentially, the restriction to only apply the optimization can be
relaxed by not requiring that the mapping cover whole file, as it is
done by other OSes.
Reported and tested by: az
Reviewed by: alc
MFC after: 2 weeks
Diffstat (limited to 'lib/libc/net')
0 files changed, 0 insertions, 0 deletions
