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| author | mjg <mjg@FreeBSD.org> | 2014-06-22 21:37:27 +0000 |
|---|---|---|
| committer | mjg <mjg@FreeBSD.org> | 2014-06-22 21:37:27 +0000 |
| commit | 202339afcf6357683f0e37b4ac2145796d6d2fc5 (patch) | |
| tree | 35484ab3d3287b205b7cb4c216643319fce9bdf7 /lib/libc/stdio/vdprintf.c | |
| parent | 66013e8440dbaddd01711e4aefca2601746581e4 (diff) | |
| download | FreeBSD-src-202339afcf6357683f0e37b4ac2145796d6d2fc5.zip FreeBSD-src-202339afcf6357683f0e37b4ac2145796d6d2fc5.tar.gz | |
Don't take filedesc lock in fdunshare().
We can read refcnt safely and only care if it is equal to 1.
If it could suddenly change from 1 to something bigger the code would be
buggy even in the previous form and transitions from > 1 to 1 are equally racy
and harmless (we copy even though there is no need).
MFC after: 1 week
Diffstat (limited to 'lib/libc/stdio/vdprintf.c')
0 files changed, 0 insertions, 0 deletions
