Date: Mon, 26 Mar 2018 18:36:17 +0000 (UTC) From: Jeff Roberson <jeff@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r331561 - head/sys/kern Message-ID: <201803261836.w2QIaHA3059754@repo.freebsd.org>
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Author: jeff Date: Mon Mar 26 18:36:17 2018 New Revision: 331561 URL: https://svnweb.freebsd.org/changeset/base/331561 Log: Fix a bug introduced in r329612 that slowly invalidates all clean bufs. Reported by: bde Reviewed by: bde Sponsored by: Netflix, Dell/EMC Isilon Modified: head/sys/kern/vfs_bio.c Modified: head/sys/kern/vfs_bio.c ============================================================================== --- head/sys/kern/vfs_bio.c Mon Mar 26 18:34:03 2018 (r331560) +++ head/sys/kern/vfs_bio.c Mon Mar 26 18:36:17 2018 (r331561) @@ -821,7 +821,8 @@ bufspace_daemon(void *arg) * which will inefficiently trade bufs with bqrelse * until we return to condition 2. */ - do { + while (bd->bd_bufspace > bd->bd_lobufspace || + bd->bd_freebuffers < bd->bd_hifreebuffers) { if (buf_recycle(bd, false) != 0) { if (bd_flushall(bd)) continue; @@ -842,9 +843,7 @@ bufspace_daemon(void *arg) BD_UNLOCK(bd); } maybe_yield(); - } while (bd->bd_bufspace > bd->bd_lobufspace || - bd->bd_freebuffers < bd->bd_hifreebuffers); - + } bufspace_daemon_wait(bd); } }
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