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| author | Steven Whitehouse <swhiteho@redhat.com> | 2011-03-30 16:25:51 +0100 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2011-04-20 08:59:25 +0100 |
| commit | 5ac048bb7ea6e87b06504b999017cfa1f38f4092 (patch) | |
| tree | 218a2dd0e6f6d39ead51bb32c10f801f6153c069 | |
| parent | 1027efaa238e1b65c07b6c2d9e270e548c2bdb07 (diff) | |
| download | op-kernel-dev-5ac048bb7ea6e87b06504b999017cfa1f38f4092.zip op-kernel-dev-5ac048bb7ea6e87b06504b999017cfa1f38f4092.tar.gz | |
GFS2: Use filemap_fdatawrite() to write back the AIL
In order to ensure that the mapping stats (and thus the bdi) are correctly
updated, this patch changes the AIL writeback to use the filemap_datawrite
function. This helps prevent stalls in balance_dirty_pages() due to
large amounts of dirty metadata when there is little or no dirty data
around.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
| -rw-r--r-- | fs/gfs2/log.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 5b102c1..3ebafa1 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -91,6 +91,7 @@ static void gfs2_ail1_start_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai) __releases(&sdp->sd_ail_lock) __acquires(&sdp->sd_ail_lock) { + struct gfs2_glock *gl = NULL; struct gfs2_bufdata *bd, *s; struct buffer_head *bh; int retry; @@ -113,19 +114,13 @@ __acquires(&sdp->sd_ail_lock) if (!buffer_dirty(bh)) continue; - + if (gl == bd->bd_gl) + continue; + gl = bd->bd_gl; list_move(&bd->bd_ail_st_list, &ai->ai_ail1_list); - get_bh(bh); spin_unlock(&sdp->sd_ail_lock); - lock_buffer(bh); - if (test_clear_buffer_dirty(bh)) { - bh->b_end_io = end_buffer_write_sync; - submit_bh(WRITE_SYNC, bh); - } else { - unlock_buffer(bh); - brelse(bh); - } + filemap_fdatawrite(gfs2_glock2aspace(gl)); spin_lock(&sdp->sd_ail_lock); retry = 1; |
