writev: update comment on preserving errno
commit793a3e5d3bee5de25bdfa01f32abff96d742b591
authorEric Wong <e@80x24.org>
Wed, 1 Apr 2015 23:18:08 +0000 (1 23:18 +0000)
committerEric Wong <e@80x24.org>
Sun, 19 Apr 2015 22:10:42 +0000 (19 22:10 +0000)
tree87f69f6fbd15e85f8e21448d28df2790e5cd1c0a
parent6e1d6f91068b3b666bc592a0666b51a0593bc7d5
writev: update comment on preserving errno

Studying malloc implementations for a while, it's completely
reasonable for "free" to alter errno when making syscalls
to release/compact memory.
ext/kgio/writev.c