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m_getm2: correct a comment.

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The comment states that function always return a top of allocated mbuf;
however, the function actually return the overall mbuf chain top pointer.

Since there are already existing users of it (via m_getm(4) macro),
rephrase the comment and leave behavior unchanged.

PR:		134335
MFC after:	12 days
This commit is contained in:
Andriy Voskoboinyk 2019-01-27 16:44:27 +00:00
parent 1a7c1b2cbc
commit 58c43838f7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=343500
1 changed files with 1 additions and 2 deletions
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sys/kern/kern_mbuf.c
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@ -1031,8 +1031,7 @@ m_getjcl(int how, short type, int flags, int size)
* Allocate a given length worth of mbufs and/or clusters (whatever fits
* best) and return a pointer to the top of the allocated chain. If an
* existing mbuf chain is provided, then we will append the new chain
* to the existing one but still return the top of the newly allocated
* chain.
* to the existing one and return a pointer to the provided mbuf.
*/
struct mbuf *
m_getm2(struct mbuf *m, int len, int how, short type, int flags)