Date: Tue, 25 Feb 2020 19:11:21 +0000 (UTC) From: Gleb Smirnoff <glebius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r358317 - head/sys/kern Message-ID: <202002251911.01PJBLDP091875@repo.freebsd.org>
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Author: glebius Date: Tue Feb 25 19:11:20 2020 New Revision: 358317 URL: https://svnweb.freebsd.org/changeset/base/358317 Log: When sendfile_swapin() sweeps through pages in search for a bogus page skip first and last pages. This is a micro optimisation. Modified: head/sys/kern/kern_sendfile.c Modified: head/sys/kern/kern_sendfile.c ============================================================================== --- head/sys/kern/kern_sendfile.c Tue Feb 25 19:04:39 2020 (r358316) +++ head/sys/kern/kern_sendfile.c Tue Feb 25 19:11:20 2020 (r358317) @@ -462,7 +462,7 @@ sendfile_swapin(vm_object_t obj, struct sf_io *sfio, i * Restore the valid page pointers. They are already * unbusied, but still wired. */ - for (j = i; j < i + count; j++) + for (j = i + 1; j < i + count - 1; j++) if (pa[j] == bogus_page) { pa[j] = vm_page_lookup(obj, OFF_TO_IDX(vmoff(j, off)));
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