4 files changed, 13 insertions, 11 deletions

diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 554fe5bd1b72..72eec6542d6a 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -569,16 +569,15 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
 	else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle)
 		log_write_header(sdp, 0, PULL);
 	lops_after_commit(sdp, ai);
-	sdp->sd_log_head = sdp->sd_log_flush_head;
 
+	gfs2_log_lock(sdp);
+	sdp->sd_log_head = sdp->sd_log_flush_head;
 	sdp->sd_log_blks_free -= sdp->sd_log_num_hdrs;
-
 	sdp->sd_log_blks_reserved = 0;
 	sdp->sd_log_commited_buf = 0;
 	sdp->sd_log_num_hdrs = 0;
 	sdp->sd_log_commited_revoke = 0;
 
-	gfs2_log_lock(sdp);
 	if (!list_empty(&ai->ai_ail1_list)) {
 		list_add(&ai->ai_list, &sdp->sd_ail1_list);
 		ai = NULL;
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 881e337b6a70..ab6d1115f95d 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -492,7 +492,7 @@ static int gfs2_check_magic(struct buffer_head *bh)
 	ptr = kaddr + bh_offset(bh);
 	if (*ptr == cpu_to_be32(GFS2_MAGIC))
 		rv = 1;
-	kunmap_atomic(page, KM_USER0);
+	kunmap_atomic(kaddr, KM_USER0);
 
 	return rv;
 }
@@ -626,7 +626,7 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
 				memcpy(bh->b_data,
 				       kaddr + bh_offset(bd2->bd_bh),
 				       sdp->sd_sb.sb_bsize);
-				kunmap_atomic(page, KM_USER0);
+				kunmap_atomic(kaddr, KM_USER0);
 				*(__be32 *)bh->b_data = 0;
 			} else {
 				bh = gfs2_log_fake_buf(sdp, bd2->bd_bh);
diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index 4fb743f4e4a4..e0599fed99ce 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -162,7 +162,7 @@ static int zero_readpage(struct page *page)
 
 	kaddr = kmap_atomic(page, KM_USER0);
 	memset(kaddr, 0, PAGE_CACHE_SIZE);
-	kunmap_atomic(page, KM_USER0);
+	kunmap_atomic(kaddr, KM_USER0);
 
 	SetPageUptodate(page);
 
@@ -195,7 +195,7 @@ static int stuffed_readpage(struct gfs2_inode *ip, struct page *page)
 	memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode),
 	       ip->i_di.di_size);
 	memset(kaddr + ip->i_di.di_size, 0, PAGE_CACHE_SIZE - ip->i_di.di_size);
-	kunmap_atomic(page, KM_USER0);
+	kunmap_atomic(kaddr, KM_USER0);
 
 	brelse(dibh);
 
@@ -370,19 +370,22 @@ static int gfs2_prepare_write(struct file *file, struct page *page,
 	loff_t pos = ((loff_t)page->index << PAGE_CACHE_SHIFT) + from;
 	loff_t end = ((loff_t)page->index << PAGE_CACHE_SHIFT) + to;
 	struct gfs2_alloc *al;
+	unsigned int write_len = to - from;
+
 
 	gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ATIME|GL_AOP, &ip->i_gh);
 	error = gfs2_glock_nq_m_atime(1, &ip->i_gh);
 	if (error)
 		goto out_uninit;
 
-	gfs2_write_calc_reserv(ip, to - from, &data_blocks, &ind_blocks);
+	gfs2_write_calc_reserv(ip, write_len, &data_blocks, &ind_blocks);
 
-	error = gfs2_write_alloc_required(ip, pos, from - to, &alloc_required);
+	error = gfs2_write_alloc_required(ip, pos, write_len, &alloc_required);
 	if (error)
 		goto out_unlock;
 
 
+	ip->i_alloc.al_requested = 0;
 	if (alloc_required) {
 		al = gfs2_alloc_get(ip);
 
@@ -482,7 +485,7 @@ static int gfs2_commit_write(struct file *file, struct page *page,
 		kaddr = kmap_atomic(page, KM_USER0);
 		memcpy(dibh->b_data + sizeof(struct gfs2_dinode) + from,
 		       kaddr + from, to - from);
-		kunmap_atomic(page, KM_USER0);
+		kunmap_atomic(kaddr, KM_USER0);
 
 		SetPageUptodate(page);
 
diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h
index 9eedfd12bfff..b01e0cfc99b5 100644
--- a/fs/gfs2/rgrp.h
+++ b/fs/gfs2/rgrp.h
@@ -32,7 +32,7 @@ void gfs2_rgrp_repolish_clones(struct gfs2_rgrpd *rgd);
 struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip);
 static inline void gfs2_alloc_put(struct gfs2_inode *ip)
 {
-	return; /* Se we can see where ip->i_alloc is used */
+	return; /* So we can see where ip->i_alloc is used */
 }
 
 int gfs2_inplace_reserve_i(struct gfs2_inode *ip,