From: Bob Peterson <rpete...@redhat.com>
This patch speeds up GFS2 unlink operations by using function
gfs2_rbm_incr rather than continuously calculating the rbm.
Signed-off-by: Bob Peterson <rpete...@redhat.com>
Signed-off-by: Steven Whitehouse <swhit...@redhat.com>
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 55ef72d..7474c41 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -2097,7 +2097,7 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd
*sdp, u64 bstart,
u32 blen, unsigned char new_state)
{
struct gfs2_rbm rbm;
- struct gfs2_bitmap *bi;
+ struct gfs2_bitmap *bi, *bi_prev = NULL;
rbm.rgd = gfs2_blk2rgrpd(sdp, bstart, 1);
if (!rbm.rgd) {
@@ -2106,18 +2106,22 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd
*sdp, u64 bstart,
return NULL;
}
+ gfs2_rbm_from_block(&rbm, bstart);
while (blen--) {
- gfs2_rbm_from_block(&rbm, bstart);
bi = rbm_bi(&rbm);
- bstart++;
- if (!bi->bi_clone) {
- bi->bi_clone = kmalloc(bi->bi_bh->b_size,
- GFP_NOFS | __GFP_NOFAIL);
- memcpy(bi->bi_clone + bi->bi_offset,
- bi->bi_bh->b_data + bi->bi_offset, bi->bi_len);
+ if (bi != bi_prev) {
+ if (!bi->bi_clone) {
+ bi->bi_clone = kmalloc(bi->bi_bh->b_size,
+ GFP_NOFS | __GFP_NOFAIL);
+ memcpy(bi->bi_clone + bi->bi_offset,
+ bi->bi_bh->b_data + bi->bi_offset,
+ bi->bi_len);
+ }
+ gfs2_trans_add_meta(rbm.rgd->rd_gl, bi->bi_bh);
+ bi_prev = bi;
}
- gfs2_trans_add_meta(rbm.rgd->rd_gl, bi->bi_bh);
gfs2_setbit(&rbm, false, new_state);
+ gfs2_rbm_incr(&rbm);
}
return rbm.rgd;
--
1.8.3.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
