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authorSteven Whitehouse <swhiteho@redhat.com>2014-02-21 15:22:35 +0000
committerSteven Whitehouse <swhiteho@redhat.com>2014-02-24 16:54:54 +0000
commitd69a3c6561362a53d1be908ca343d899161d602c (patch)
tree8e9827ef9c25a21fab641dcaf263f84b026d535e /fs/gfs2/trans.c
parent654a6d2f962edb7bf85973cfe93a04e24f56f902 (diff)
downloadlinux-d69a3c6561362a53d1be908ca343d899161d602c.tar.bz2
GFS2: Move log buffer lists into transaction
Over time, we hope to be able to improve the concurrency available in the log code. This is one small step towards that, by moving the buffer lists from the super block, and into the transaction structure, so that each transaction builds its own buffer lists. At transaction commit time, the buffer lists are merged into the currently accumulating transaction. That transaction then is passed into the before and after commit functions at journal flush time. Thus there should be no change in overall behaviour yet. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/trans.c')
-rw-r--r--fs/gfs2/trans.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c
index 963b28c50fd4..e0464a22908c 100644
--- a/fs/gfs2/trans.c
+++ b/fs/gfs2/trans.c
@@ -51,6 +51,9 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks,
if (revokes)
tr->tr_reserved += gfs2_struct2blk(sdp, revokes,
sizeof(u64));
+ INIT_LIST_HEAD(&tr->tr_databuf);
+ INIT_LIST_HEAD(&tr->tr_buf);
+
sb_start_intwrite(sdp->sd_vfs);
gfs2_holder_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &tr->tr_t_gh);
@@ -211,7 +214,7 @@ void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh)
gfs2_pin(sdp, bd->bd_bh);
tr->tr_num_databuf_new++;
sdp->sd_log_num_databuf++;
- list_add_tail(&bd->bd_list, &sdp->sd_log_le_databuf);
+ list_add_tail(&bd->bd_list, &tr->tr_databuf);
}
gfs2_log_unlock(sdp);
unlock_buffer(bh);
@@ -239,7 +242,7 @@ static void meta_lo_add(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd)
mh->__pad0 = cpu_to_be64(0);
mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
sdp->sd_log_num_buf++;
- list_add(&bd->bd_list, &sdp->sd_log_le_buf);
+ list_add(&bd->bd_list, &tr->tr_buf);
tr->tr_num_buf_new++;
}