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Diffstat (limited to 'fs/gfs2/lops.c')
-rw-r--r--fs/gfs2/lops.c64
1 files changed, 26 insertions, 38 deletions
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 05bbb124699f..de05b4d66ef3 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -60,6 +60,29 @@ static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh)
trace_gfs2_pin(bd, 1);
}
+static bool buffer_is_rgrp(const struct gfs2_bufdata *bd)
+{
+ return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP;
+}
+
+static void maybe_release_space(struct gfs2_bufdata *bd)
+{
+ struct gfs2_glock *gl = bd->bd_gl;
+ struct gfs2_sbd *sdp = gl->gl_sbd;
+ struct gfs2_rgrpd *rgd = gl->gl_object;
+ unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number;
+ struct gfs2_bitmap *bi = rgd->rd_bits + index;
+
+ if (bi->bi_clone == 0)
+ return;
+ if (sdp->sd_args.ar_discard)
+ gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi);
+ memcpy(bi->bi_clone + bi->bi_offset,
+ bd->bd_bh->b_data + bi->bi_offset, bi->bi_len);
+ clear_bit(GBF_FULL, &bi->bi_flags);
+ rgd->rd_free_clone = rgd->rd_free;
+}
+
/**
* gfs2_unpin - Unpin a buffer
* @sdp: the filesystem the buffer belongs to
@@ -81,6 +104,9 @@ static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh,
mark_buffer_dirty(bh);
clear_buffer_pinned(bh);
+ if (buffer_is_rgrp(bd))
+ maybe_release_space(bd);
+
spin_lock(&sdp->sd_ail_lock);
if (bd->bd_ail) {
list_del(&bd->bd_ail_st_list);
@@ -469,42 +495,6 @@ static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
gfs2_revoke_clean(sdp);
}
-static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
-{
- struct gfs2_rgrpd *rgd;
- struct gfs2_trans *tr = current->journal_info;
-
- tr->tr_touched = 1;
-
- rgd = container_of(le, struct gfs2_rgrpd, rd_le);
-
- gfs2_log_lock(sdp);
- if (!list_empty(&le->le_list)){
- gfs2_log_unlock(sdp);
- return;
- }
- gfs2_rgrp_bh_hold(rgd);
- sdp->sd_log_num_rg++;
- list_add(&le->le_list, &sdp->sd_log_le_rg);
- gfs2_log_unlock(sdp);
-}
-
-static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
-{
- struct list_head *head = &sdp->sd_log_le_rg;
- struct gfs2_rgrpd *rgd;
-
- while (!list_empty(head)) {
- rgd = list_entry(head->next, struct gfs2_rgrpd, rd_le.le_list);
- list_del_init(&rgd->rd_le.le_list);
- sdp->sd_log_num_rg--;
-
- gfs2_rgrp_repolish_clones(rgd);
- gfs2_rgrp_bh_put(rgd);
- }
- gfs2_assert_warn(sdp, !sdp->sd_log_num_rg);
-}
-
/**
* databuf_lo_add - Add a databuf to the transaction.
*
@@ -771,8 +761,6 @@ const struct gfs2_log_operations gfs2_revoke_lops = {
};
const struct gfs2_log_operations gfs2_rg_lops = {
- .lo_add = rg_lo_add,
- .lo_after_commit = rg_lo_after_commit,
.lo_name = "rg",
};