[PATCH] ext4: le*_add_cpu conversion

[marcin . slusarz]

From: Marcin Slusarz <marcin.slusarz@xxxxxxxxx>

replace all:
little_endian_variable = cpu_to_leX(leX_to_cpu(little_endian_variable) +
					expression_in_cpu_byteorder);
with:
	leX_add_cpu(&little_endian_variable, expression_in_cpu_byteorder);
generated with semantic patch

Signed-off-by: Marcin Slusarz <marcin.slusarz@xxxxxxxxx>
Cc: linux-ext4@xxxxxxxxxxxxxxx
Cc: sct@xxxxxxxxxx
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: adilger@xxxxxxxxxxxxx
Cc: "Theodore Ts'o" <tytso@xxxxxxx>
Cc: Mingming Cao <cmm@xxxxxxxxxx>
---
 fs/ext4/balloc.c  |    7 ++-----
 fs/ext4/extents.c |   20 +++++++++-----------
 fs/ext4/ialloc.c  |   12 ++++--------
 fs/ext4/mballoc.c |    7 ++-----
 fs/ext4/resize.c  |    6 ++----
 fs/ext4/super.c   |    2 +-
 fs/ext4/xattr.c   |    6 ++----
 7 files changed, 22 insertions(+), 38 deletions(-)

diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 0737e05..5d34899 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -752,9 +752,7 @@ do_more:
 	jbd_unlock_bh_state(bitmap_bh);
 
 	spin_lock(sb_bgl_lock(sbi, block_group));
-	desc->bg_free_blocks_count =
-		cpu_to_le16(le16_to_cpu(desc->bg_free_blocks_count) +
-			group_freed);
+	le16_add_cpu(&desc->bg_free_blocks_count, group_freed);
 	desc->bg_checksum = ext4_group_desc_csum(sbi, block_group, desc);
 	spin_unlock(sb_bgl_lock(sbi, block_group));
 	percpu_counter_add(&sbi->s_freeblocks_counter, count);
@@ -1823,8 +1821,7 @@ allocated:
 	spin_lock(sb_bgl_lock(sbi, group_no));
 	if (gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT))
 		gdp->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
-	gdp->bg_free_blocks_count =
-			cpu_to_le16(le16_to_cpu(gdp->bg_free_blocks_count)-num);
+	le16_add_cpu(&gdp->bg_free_blocks_count, -num);
 	gdp->bg_checksum = ext4_group_desc_csum(sbi, group_no, gdp);
 	spin_unlock(sb_bgl_lock(sbi, group_no));
 	percpu_counter_sub(&sbi->s_freeblocks_counter, num);
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index bc7081f..ad628ff 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -608,7 +608,7 @@ static int ext4_ext_insert_index(handle_t *handle, struct inode *inode,
 
 	ix->ei_block = cpu_to_le32(logical);
 	ext4_idx_store_pblock(ix, ptr);
-	curp->p_hdr->eh_entries = cpu_to_le16(le16_to_cpu(curp->p_hdr->eh_entries)+1);
+	le16_add_cpu(&curp->p_hdr->eh_entries, 1);
 
 	BUG_ON(le16_to_cpu(curp->p_hdr->eh_entries)
 			     > le16_to_cpu(curp->p_hdr->eh_max));
@@ -730,7 +730,7 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
 	}
 	if (m) {
 		memmove(ex, path[depth].p_ext-m, sizeof(struct ext4_extent)*m);
-		neh->eh_entries = cpu_to_le16(le16_to_cpu(neh->eh_entries)+m);
+		le16_add_cpu(&neh->eh_entries, m);
 	}
 
 	set_buffer_uptodate(bh);
@@ -747,8 +747,7 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
 		err = ext4_ext_get_access(handle, inode, path + depth);
 		if (err)
 			goto cleanup;
-		path[depth].p_hdr->eh_entries =
-		     cpu_to_le16(le16_to_cpu(path[depth].p_hdr->eh_entries)-m);
+		le16_add_cpu(&path[depth].p_hdr->eh_entries, -m);
 		err = ext4_ext_dirty(handle, inode, path + depth);
 		if (err)
 			goto cleanup;
@@ -811,8 +810,7 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
 		if (m) {
 			memmove(++fidx, path[i].p_idx - m,
 				sizeof(struct ext4_extent_idx) * m);
-			neh->eh_entries =
-				cpu_to_le16(le16_to_cpu(neh->eh_entries) + m);
+			le16_add_cpu(&neh->eh_entries, m);
 		}
 		set_buffer_uptodate(bh);
 		unlock_buffer(bh);
@@ -828,7 +826,7 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
 			err = ext4_ext_get_access(handle, inode, path + i);
 			if (err)
 				goto cleanup;
-			path[i].p_hdr->eh_entries = cpu_to_le16(le16_to_cpu(path[i].p_hdr->eh_entries)-m);
+			le16_add_cpu(&path[i].p_hdr->eh_entries, -m);
 			err = ext4_ext_dirty(handle, inode, path + i);
 			if (err)
 				goto cleanup;
@@ -1363,7 +1361,7 @@ int ext4_ext_try_to_merge(struct inode *inode,
 				* sizeof(struct ext4_extent);
 			memmove(ex + 1, ex + 2, len);
 		}
-		eh->eh_entries = cpu_to_le16(le16_to_cpu(eh->eh_entries) - 1);
+		le16_add_cpu(&eh->eh_entries, -1);
 		merge_done = 1;
 		WARN_ON(eh->eh_entries == 0);
 		if (!eh->eh_entries)
@@ -1554,7 +1552,7 @@ has_space:
 		path[depth].p_ext = nearex;
 	}
 
-	eh->eh_entries = cpu_to_le16(le16_to_cpu(eh->eh_entries)+1);
+	le16_add_cpu(&eh->eh_entries, 1);
 	nearex = path[depth].p_ext;
 	nearex->ee_block = newext->ee_block;
 	ext4_ext_store_pblock(nearex, ext_pblock(newext));
@@ -1693,7 +1691,7 @@ static int ext4_ext_rm_idx(handle_t *handle, struct inode *inode,
 	err = ext4_ext_get_access(handle, inode, path);
 	if (err)
 		return err;
-	path->p_hdr->eh_entries = cpu_to_le16(le16_to_cpu(path->p_hdr->eh_entries)-1);
+	le16_add_cpu(&path->p_hdr->eh_entries, -1);
 	err = ext4_ext_dirty(handle, inode, path);
 	if (err)
 		return err;
@@ -1896,7 +1894,7 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode,
 		if (num == 0) {
 			/* this extent is removed; mark slot entirely unused */
 			ext4_ext_store_pblock(ex, 0);
-			eh->eh_entries = cpu_to_le16(le16_to_cpu(eh->eh_entries)-1);
+			le16_add_cpu(&eh->eh_entries, -1);
 		}
 
 		ex->ee_block = cpu_to_le32(block);
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index da18a74..843664c 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -223,11 +223,9 @@ void ext4_free_inode (handle_t *handle, struct inode * inode)
 
 		if (gdp) {
 			spin_lock(sb_bgl_lock(sbi, block_group));
-			gdp->bg_free_inodes_count = cpu_to_le16(
-				le16_to_cpu(gdp->bg_free_inodes_count) + 1);
+			le16_add_cpu(&gdp->bg_free_inodes_count, 1);
 			if (is_directory)
-				gdp->bg_used_dirs_count = cpu_to_le16(
-				  le16_to_cpu(gdp->bg_used_dirs_count) - 1);
+				le16_add_cpu(&gdp->bg_used_dirs_count, -1);
 			gdp->bg_checksum = ext4_group_desc_csum(sbi,
 							block_group, gdp);
 			spin_unlock(sb_bgl_lock(sbi, block_group));
@@ -664,11 +662,9 @@ got:
 				cpu_to_le16(EXT4_INODES_PER_GROUP(sb) - ino);
 	}
 
-	gdp->bg_free_inodes_count =
-		cpu_to_le16(le16_to_cpu(gdp->bg_free_inodes_count) - 1);
+	le16_add_cpu(&gdp->bg_free_inodes_count, -1);
 	if (S_ISDIR(mode)) {
-		gdp->bg_used_dirs_count =
-			cpu_to_le16(le16_to_cpu(gdp->bg_used_dirs_count) + 1);
+		le16_add_cpu(&gdp->bg_used_dirs_count, 1);
 	}
 	gdp->bg_checksum = ext4_group_desc_csum(sbi, group, gdp);
 	spin_unlock(sb_bgl_lock(sbi, group));
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index dd0fcfc..586a320 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3074,9 +3074,7 @@ static int ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac,
 						ac->ac_b_ex.fe_group,
 						gdp));
 	}
-	gdp->bg_free_blocks_count =
-		cpu_to_le16(le16_to_cpu(gdp->bg_free_blocks_count)
-				- ac->ac_b_ex.fe_len);
+	le16_add_cpu(&gdp->bg_free_blocks_count, -ac->ac_b_ex.fe_len);
 	gdp->bg_checksum = ext4_group_desc_csum(sbi, ac->ac_b_ex.fe_group, gdp);
 	spin_unlock(sb_bgl_lock(sbi, ac->ac_b_ex.fe_group));
 	percpu_counter_sub(&sbi->s_freeblocks_counter, ac->ac_b_ex.fe_len);
@@ -4564,8 +4562,7 @@ do_more:
 	}
 
 	spin_lock(sb_bgl_lock(sbi, block_group));
-	gdp->bg_free_blocks_count =
-		cpu_to_le16(le16_to_cpu(gdp->bg_free_blocks_count) + count);
+	le16_add_cpu(&gdp->bg_free_blocks_count, count);
 	gdp->bg_checksum = ext4_group_desc_csum(sbi, block_group, gdp);
 	spin_unlock(sb_bgl_lock(sbi, block_group));
 	percpu_counter_add(&sbi->s_freeblocks_counter, count);
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 9477a2b..f9e716a 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -502,8 +502,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
 	EXT4_SB(sb)->s_gdb_count++;
 	kfree(o_group_desc);
 
-	es->s_reserved_gdt_blocks =
-		cpu_to_le16(le16_to_cpu(es->s_reserved_gdt_blocks) - 1);
+	le16_add_cpu(&es->s_reserved_gdt_blocks, -1);
 	ext4_journal_dirty_metadata(handle, EXT4_SB(sb)->s_sbh);
 
 	return 0;
@@ -877,8 +876,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
 	 */
 	ext4_blocks_count_set(es, ext4_blocks_count(es) +
 		input->blocks_count);
-	es->s_inodes_count = cpu_to_le32(le32_to_cpu(es->s_inodes_count) +
-		EXT4_INODES_PER_GROUP(sb));
+	le32_add_cpu(&es->s_inodes_count, EXT4_INODES_PER_GROUP(sb));
 
 	/*
 	 * We need to protect s_groups_count against other CPUs seeing
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 6627ee0..5aa0a50 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1391,7 +1391,7 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es,
 #endif
 	if (!(__s16) le16_to_cpu(es->s_max_mnt_count))
 		es->s_max_mnt_count = cpu_to_le16(EXT4_DFL_MAX_MNT_COUNT);
-	es->s_mnt_count=cpu_to_le16(le16_to_cpu(es->s_mnt_count) + 1);
+	le16_add_cpu(&es->s_mnt_count, 1);
 	es->s_mtime = cpu_to_le32(get_seconds());
 	ext4_update_dynamic_rev(sb);
 	EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index d796213..fedaa4f 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -484,8 +484,7 @@ ext4_xattr_release_block(handle_t *handle, struct inode *inode,
 		get_bh(bh);
 		ext4_forget(handle, 1, inode, bh, bh->b_blocknr);
 	} else {
-		BHDR(bh)->h_refcount = cpu_to_le32(
-				le32_to_cpu(BHDR(bh)->h_refcount) - 1);
+		le32_add_cpu(&BHDR(bh)->h_refcount, -1);
 		error = ext4_journal_dirty_metadata(handle, bh);
 		if (IS_SYNC(inode))
 			handle->h_sync = 1;
@@ -789,8 +788,7 @@ inserted:
 				if (error)
 					goto cleanup_dquot;
 				lock_buffer(new_bh);
-				BHDR(new_bh)->h_refcount = cpu_to_le32(1 +
-					le32_to_cpu(BHDR(new_bh)->h_refcount));
+				le32_add_cpu(&BHDR(new_bh)->h_refcount, 1);
 				ea_bdebug(new_bh, "reusing; refcount now=%d",
 					le32_to_cpu(BHDR(new_bh)->h_refcount));
 				unlock_buffer(new_bh);
-- 
1.5.3.7

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