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Update comment to prefer M_NOWAIT over M_DONTWAIT and

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M_WAITOK over M_WAIT.

MFC after:	1 week
This commit is contained in:
Andre Oppermann 2012-11-27 20:16:01 +00:00
parent 2c3142c82c
commit 83cacd1674
1 changed files with 2 additions and 2 deletions
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4
sys/sys/mbuf.h
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@ -349,8 +349,8 @@ struct mbstat {
* Flags specifying how an allocation should be made.
*
* The flag to use is as follows:
* - M_DONTWAIT or M_NOWAIT from an interrupt handler to not block allocation.
* - M_WAIT or M_WAITOK from wherever it is safe to block.
* - M_NOWAIT (M_DONTWAIT) from an interrupt handler to not block allocation.
* - M_WAITOK (M_WAIT) from wherever it is safe to block.
*
* M_DONTWAIT/M_NOWAIT means that we will not block the thread explicitly and
* if we cannot allocate immediately we may return NULL, whereas