Date: Sun, 5 Jul 2015 22:44:42 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r285183 - head/sys/kern Message-ID: <201507052244.t65MigOb011242@repo.freebsd.org>
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Author: markj Date: Sun Jul 5 22:44:41 2015 New Revision: 285183 URL: https://svnweb.freebsd.org/changeset/base/285183 Log: Remove a stale descriptive comment for gbincore(). The splay trees referenced in the comment were converted to path-compressed tries in r250551. MFC after: 3 days Modified: head/sys/kern/vfs_subr.c Modified: head/sys/kern/vfs_subr.c ============================================================================== --- head/sys/kern/vfs_subr.c Sun Jul 5 22:37:33 2015 (r285182) +++ head/sys/kern/vfs_subr.c Sun Jul 5 22:44:41 2015 (r285183) @@ -1612,16 +1612,7 @@ buf_vlist_add(struct buf *bp, struct buf } /* - * Lookup a buffer using the splay tree. Note that we specifically avoid - * shadow buffers used in background bitmap writes. - * - * This code isn't quite efficient as it could be because we are maintaining - * two sorted lists and do not know which list the block resides in. - * - * During a "make buildworld" the desired buffer is found at one of - * the roots more than 60% of the time. Thus, checking both roots - * before performing either splay eliminates unnecessary splays on the - * first tree splayed. + * Look up a buffer using the buffer tries. */ struct buf * gbincore(struct bufobj *bo, daddr_t lblkno)
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