gfs2-utils: RHEL7 - fsck.gfs2: Issue read-ahead for dinodes in each bitmap

Gitweb: http://git.fedorahosted.org/git/?p=gfs2-utils.git;a=commitdiff;h=0d5ce5d1... Commit: 0d5ce5d1c6356eae7451227d3cd7431ee568b97b Parent: c2d36da56dd1ff6ece11121233eb20f757fa5976 Author: Bob Peterson <rpeterso(a)redhat.com&gt; AuthorDate: Mon Jan 6 08:28:24 2014 -0600 Committer: Bob Peterson <rpeterso(a)redhat.com&gt; CommitterDate: Fri Jul 11 14:39:46 2014 -0500 fsck.gfs2: Issue read-ahead for dinodes in each bitmap This patch speeds up fsck.gfs2 by issuing read-ahead for each of the dinodes found in each of the bitmaps, prior to processing the bitmap. rhbz#1038312 --- gfs2/fsck/pass1.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/gfs2/fsck/pass1.c b/gfs2/fsck/pass1.c index df778ef..db23631 100644 --- a/gfs2/fsck/pass1.c +++ b/gfs2/fsck/pass1.c @@ -1440,6 +1440,10 @@ static int pass1_process_bitmap(struct gfs2_sbd *sdp, struct rgrp_tree *rgd, uin struct gfs2_inode *ip; uint8_t q; + /* Issue read-ahead for all dinodes in this bitmap */ + for (i = 0; i < n; i++) + posix_fadvise(sdp->device_fd, ibuf[i] * sdp->bsize, sdp->bsize, + POSIX_FADV_WILLNEED); for (i = 0; i < n; i++) { int is_inode; uint32_t check_magic;