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| author | avg <avg@FreeBSD.org> | 2015-08-24 09:48:50 +0000 |
|---|---|---|
| committer | avg <avg@FreeBSD.org> | 2015-08-24 09:48:50 +0000 |
| commit | 5a44a9dd1deacb650de2a3b85ba593040d0bcd15 (patch) | |
| tree | e3b25b7d384672805303adbba5df1ec03644be7b /lib/libc | |
| parent | 4b25d224c2b9111a16649070d98b4712a78af637 (diff) | |
| download | FreeBSD-src-5a44a9dd1deacb650de2a3b85ba593040d0bcd15.zip FreeBSD-src-5a44a9dd1deacb650de2a3b85ba593040d0bcd15.tar.gz | |
MFV (partial) r286889: 5692 expose the number of hole blocks in a file
FreeBSD porting notes:
- only kernel-side changes are merged
- the new ioctl is not actually implemented yet
- thus, the goal is to synchronize DMU code
illumos/illumos-gate@2bcf0248e992f292c7b814458bcdce2f004925d6
https://www.illumos.org/issues/5692
we would like to expose the number of hole (sparse) blocks in a file.
this can be useful to for example if you want to fill in the holes with
some data; knowing the number of holes in advances allows you to report
progress on hole filling. We could use SEEK_HOLE to do that but it would
be O(n) where n is the number of holes present in the file.
Author: Max Grossman <max.grossman@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Boris Protopopov <bprotopopov@hotmail.com>
Approved by: Richard Lowe <richlowe@richlowe.net>
Diffstat (limited to 'lib/libc')
0 files changed, 0 insertions, 0 deletions
