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| author |   Anton Ivanov <anton.ivanov@cambridgegreys.com> | 2020-04-22 17:00:01 +0100 |
|---|---|---|
| committer |   Richard Weinberger <richard@nod.at> | 2020-06-02 22:37:55 +0200 |
| commit | 54ebe4060fe6c4ab76c79354417612ac9cf4f95e (patch) | |
| tree | ceb6f5e538059b73ee13c52afe22fb4b8276cfbe /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | um: Do not evaluate compiler's library path when cleaning (diff) | |
| download | wireguard-linux-54ebe4060fe6c4ab76c79354417612ac9cf4f95e.tar.xz wireguard-linux-54ebe4060fe6c4ab76c79354417612ac9cf4f95e.zip | |
um: Use fdatasync() when mapping the UBD FSYNC command
We do not need to update the metadata (atime, mtime, etc)
on the UBD file and/or the COW file until UML exits.
UBD image mtime is checked in UML only when opening
the files. After that they are locked and used
exclusively by a single UML instance, so there is
no point wasting resources on updating metadata on
every sync. We can sync data only. The host will
always update mtime if a file has been modified upon
closing it.
Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions