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Commit 88b6edd1 authored by Theodore Ts'o's avatar Theodore Ts'o
Browse files

ext4: Clean up calls to ext4_get_group_desc() 



If the caller isn't planning on modifying the block group descriptors,
there's no need to pass in a pointer to a struct buffer_head.  Nuking
this saves a tiny amount of CPU time and stack space usage.

Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent 759d427a

fs/ext4/ialloc.c

+1 −2
Original line number Diff line number Diff line
@@ -347,7 +347,6 @@ static int find_group_flex(struct super_block *sb, struct inode *parent, 
{

	struct ext4_sb_info *sbi = EXT4_SB(sb);

	struct ext4_group_desc *desc;

	struct buffer_head *bh;

	struct flex_groups *flex_group = sbi->s_flex_groups;

	ext4_group_t parent_group = EXT4_I(parent)->i_block_group;

	ext4_group_t parent_fbg_group = ext4_flex_group(sbi, parent_group);
@@ -402,7 +401,7 @@ static int find_group_flex(struct super_block *sb, struct inode *parent, 
found_flexbg:

	for (i = best_flex * flex_size; i < ngroups &&

		     i < (best_flex + 1) * flex_size; i++) {

		desc = ext4_get_group_desc(sb, i, &bh);

		desc = ext4_get_group_desc(sb, i, NULL);

		if (ext4_free_inodes_count(sb, desc)) {

			*best_group = i;

			goto out;

fs/ext4/super.c

+1 −2
Original line number Diff line number Diff line
@@ -1660,7 +1660,6 @@ static int ext4_fill_flex_info(struct super_block *sb) 
{

	struct ext4_sb_info *sbi = EXT4_SB(sb);

	struct ext4_group_desc *gdp = NULL;

	struct buffer_head *bh;

	ext4_group_t flex_group_count;

	ext4_group_t flex_group;

	int groups_per_flex = 0;
@@ -1693,7 +1692,7 @@ static int ext4_fill_flex_info(struct super_block *sb) 
	}



	for (i = 0; i < sbi->s_groups_count; i++) {

		gdp = ext4_get_group_desc(sb, i, &bh);

		gdp = ext4_get_group_desc(sb, i, NULL);



		flex_group = ext4_flex_group(sbi, i);

		atomic_set(&sbi->s_flex_groups[flex_group].free_inodes,