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gfs2: Trim the ordered write list in gfs2_ordered_write()

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We iterate through the entire ordered writes list in
gfs2_ordered_write() to write out inodes. It's a good
place to try and shrink the list by throwing out inodes
that don't have any pages.

Signed-off-by: Abhi Das <adas@redhat.com>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
This commit is contained in:
Abhi Das 2017-12-22 07:55:31 -06:00 committed by Bob Peterson
parent 588bff95c9
commit 1f23bc7869
1 changed files with 5 additions and 2 deletions
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7
fs/gfs2/log.c
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@ -538,9 +538,12 @@ static void gfs2_ordered_write(struct gfs2_sbd *sdp)
list_sort(NULL, &sdp->sd_log_le_ordered, &ip_cmp);
while (!list_empty(&sdp->sd_log_le_ordered)) {
ip = list_entry(sdp->sd_log_le_ordered.next, struct gfs2_inode, i_ordered);
list_move(&ip->i_ordered, &written);
if (ip->i_inode.i_mapping->nrpages == 0)
if (ip->i_inode.i_mapping->nrpages == 0) {
test_and_clear_bit(GIF_ORDERED, &ip->i_flags);
list_del(&ip->i_ordered);
continue;
}
list_move(&ip->i_ordered, &written);
spin_unlock(&sdp->sd_ordered_lock);
filemap_fdatawrite(ip->i_inode.i_mapping);
spin_lock(&sdp->sd_ordered_lock);