From: Eric Sandeen Subject: [PATCH 1/2] ext234: remove unused bh in calls to get_group_desc Date: Thu, 07 Jun 2007 14:38:53 -0500 Message-ID: <46685ECD.6030103@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: ext4 development , Linux Kernel Mailing List Return-path: Received: from mx1.redhat.com ([66.187.233.31]:55603 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932728AbXFGTmI (ORCPT ); Thu, 7 Jun 2007 15:42:08 -0400 Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org ext[234]_get_group_desc only sets the bh argument if it is non-null, and several callers pass in a bh which is not subsequently used - it may as well be NULL. Compiled & booted & lightly tested. Signed-off-by: Eric Sandeen Index: linux-2.6.22-rc3/fs/ext3/ialloc.c =================================================================== --- linux-2.6.22-rc3.orig/fs/ext3/ialloc.c +++ linux-2.6.22-rc3/fs/ext3/ialloc.c @@ -204,14 +204,13 @@ static int find_group_dir(struct super_b int ngroups = EXT3_SB(sb)->s_groups_count; unsigned int freei, avefreei; struct ext3_group_desc *desc, *best_desc = NULL; - struct buffer_head *bh; int group, best_group = -1; freei = percpu_counter_read_positive(&EXT3_SB(sb)->s_freeinodes_counter); avefreei = freei / ngroups; for (group = 0; group < ngroups; group++) { - desc = ext3_get_group_desc (sb, group, &bh); + desc = ext3_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_free_inodes_count) < avefreei) @@ -269,7 +268,6 @@ static int find_group_orlov(struct super ext3_grpblk_t min_blocks; int group = -1, i; struct ext3_group_desc *desc; - struct buffer_head *bh; freei = percpu_counter_read_positive(&sbi->s_freeinodes_counter); avefreei = freei / ngroups; @@ -286,7 +284,7 @@ static int find_group_orlov(struct super parent_group = (unsigned)group % ngroups; for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; - desc = ext3_get_group_desc (sb, group, &bh); + desc = ext3_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_used_dirs_count) >= best_ndir) @@ -319,7 +317,7 @@ static int find_group_orlov(struct super for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; - desc = ext3_get_group_desc (sb, group, &bh); + desc = ext3_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_used_dirs_count) >= max_dirs) @@ -334,7 +332,7 @@ static int find_group_orlov(struct super fallback: for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; - desc = ext3_get_group_desc (sb, group, &bh); + desc = ext3_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_free_inodes_count) >= avefreei) @@ -358,14 +356,13 @@ static int find_group_other(struct super int parent_group = EXT3_I(parent)->i_block_group; int ngroups = EXT3_SB(sb)->s_groups_count; struct ext3_group_desc *desc; - struct buffer_head *bh; int group, i; /* * Try to place the inode in its parent directory */ group = parent_group; - desc = ext3_get_group_desc (sb, group, &bh); + desc = ext3_get_group_desc (sb, group, NULL); if (desc && le16_to_cpu(desc->bg_free_inodes_count) && le16_to_cpu(desc->bg_free_blocks_count)) return group; @@ -389,7 +386,7 @@ static int find_group_other(struct super group += i; if (group >= ngroups) group -= ngroups; - desc = ext3_get_group_desc (sb, group, &bh); + desc = ext3_get_group_desc (sb, group, NULL); if (desc && le16_to_cpu(desc->bg_free_inodes_count) && le16_to_cpu(desc->bg_free_blocks_count)) return group; @@ -403,7 +400,7 @@ static int find_group_other(struct super for (i = 0; i < ngroups; i++) { if (++group >= ngroups) group = 0; - desc = ext3_get_group_desc (sb, group, &bh); + desc = ext3_get_group_desc (sb, group, NULL); if (desc && le16_to_cpu(desc->bg_free_inodes_count)) return group; } Index: linux-2.6.22-rc3/fs/ext2/ialloc.c =================================================================== --- linux-2.6.22-rc3.orig/fs/ext2/ialloc.c +++ linux-2.6.22-rc3/fs/ext2/ialloc.c @@ -177,7 +177,6 @@ static void ext2_preread_inode(struct in unsigned long block_group; unsigned long offset; unsigned long block; - struct buffer_head *bh; struct ext2_group_desc * gdp; struct backing_dev_info *bdi; @@ -188,7 +187,7 @@ static void ext2_preread_inode(struct in return; block_group = (inode->i_ino - 1) / EXT2_INODES_PER_GROUP(inode->i_sb); - gdp = ext2_get_group_desc(inode->i_sb, block_group, &bh); + gdp = ext2_get_group_desc(inode->i_sb, block_group, NULL); if (gdp == NULL) return; @@ -217,11 +216,10 @@ static int find_group_dir(struct super_b int ngroups = EXT2_SB(sb)->s_groups_count; int avefreei = ext2_count_free_inodes(sb) / ngroups; struct ext2_group_desc *desc, *best_desc = NULL; - struct buffer_head *bh, *best_bh = NULL; int group, best_group = -1; for (group = 0; group < ngroups; group++) { - desc = ext2_get_group_desc (sb, group, &bh); + desc = ext2_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_free_inodes_count) < avefreei) @@ -231,7 +229,6 @@ static int find_group_dir(struct super_b le16_to_cpu(best_desc->bg_free_blocks_count))) { best_group = group; best_desc = desc; - best_bh = bh; } } if (!best_desc) @@ -284,7 +281,6 @@ static int find_group_orlov(struct super int max_debt, max_dirs, min_blocks, min_inodes; int group = -1, i; struct ext2_group_desc *desc; - struct buffer_head *bh; freei = percpu_counter_read_positive(&sbi->s_freeinodes_counter); avefreei = freei / ngroups; @@ -295,7 +291,6 @@ static int find_group_orlov(struct super if ((parent == sb->s_root->d_inode) || (EXT2_I(parent)->i_flags & EXT2_TOPDIR_FL)) { struct ext2_group_desc *best_desc = NULL; - struct buffer_head *best_bh = NULL; int best_ndir = inodes_per_group; int best_group = -1; @@ -303,7 +298,7 @@ static int find_group_orlov(struct super parent_group = (unsigned)group % ngroups; for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; - desc = ext2_get_group_desc (sb, group, &bh); + desc = ext2_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_used_dirs_count) >= best_ndir) @@ -315,11 +310,9 @@ static int find_group_orlov(struct super best_group = group; best_ndir = le16_to_cpu(desc->bg_used_dirs_count); best_desc = desc; - best_bh = bh; } if (best_group >= 0) { desc = best_desc; - bh = best_bh; group = best_group; goto found; } @@ -345,7 +338,7 @@ static int find_group_orlov(struct super for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; - desc = ext2_get_group_desc (sb, group, &bh); + desc = ext2_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (sbi->s_debts[group] >= max_debt) @@ -362,7 +355,7 @@ static int find_group_orlov(struct super fallback: for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; - desc = ext2_get_group_desc (sb, group, &bh); + desc = ext2_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_free_inodes_count) >= avefreei) @@ -389,14 +382,13 @@ static int find_group_other(struct super int parent_group = EXT2_I(parent)->i_block_group; int ngroups = EXT2_SB(sb)->s_groups_count; struct ext2_group_desc *desc; - struct buffer_head *bh; int group, i; /* * Try to place the inode in its parent directory */ group = parent_group; - desc = ext2_get_group_desc (sb, group, &bh); + desc = ext2_get_group_desc (sb, group, NULL); if (desc && le16_to_cpu(desc->bg_free_inodes_count) && le16_to_cpu(desc->bg_free_blocks_count)) goto found; @@ -420,7 +412,7 @@ static int find_group_other(struct super group += i; if (group >= ngroups) group -= ngroups; - desc = ext2_get_group_desc (sb, group, &bh); + desc = ext2_get_group_desc (sb, group, NULL); if (desc && le16_to_cpu(desc->bg_free_inodes_count) && le16_to_cpu(desc->bg_free_blocks_count)) goto found; @@ -434,7 +426,7 @@ static int find_group_other(struct super for (i = 0; i < ngroups; i++) { if (++group >= ngroups) group = 0; - desc = ext2_get_group_desc (sb, group, &bh); + desc = ext2_get_group_desc (sb, group, NULL); if (desc && le16_to_cpu(desc->bg_free_inodes_count)) goto found; } Index: linux-2.6.22-rc3/fs/ext2/inode.c =================================================================== --- linux-2.6.22-rc3.orig/fs/ext2/inode.c +++ linux-2.6.22-rc3/fs/ext2/inode.c @@ -1010,7 +1010,7 @@ static struct ext2_inode *ext2_get_inode goto Einval; block_group = (ino - 1) / EXT2_INODES_PER_GROUP(sb); - gdp = ext2_get_group_desc(sb, block_group, &bh); + gdp = ext2_get_group_desc(sb, block_group, NULL); if (!gdp) goto Egdp; /* Index: linux-2.6.22-rc3/fs/ext4/ialloc.c =================================================================== --- linux-2.6.22-rc3.orig/fs/ext4/ialloc.c +++ linux-2.6.22-rc3/fs/ext4/ialloc.c @@ -204,14 +204,13 @@ static int find_group_dir(struct super_b int ngroups = EXT4_SB(sb)->s_groups_count; unsigned int freei, avefreei; struct ext4_group_desc *desc, *best_desc = NULL; - struct buffer_head *bh; int group, best_group = -1; freei = percpu_counter_read_positive(&EXT4_SB(sb)->s_freeinodes_counter); avefreei = freei / ngroups; for (group = 0; group < ngroups; group++) { - desc = ext4_get_group_desc (sb, group, &bh); + desc = ext4_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_free_inodes_count) < avefreei) @@ -269,7 +268,6 @@ static int find_group_orlov(struct super ext4_grpblk_t min_blocks; int group = -1, i; struct ext4_group_desc *desc; - struct buffer_head *bh; freei = percpu_counter_read_positive(&sbi->s_freeinodes_counter); avefreei = freei / ngroups; @@ -287,7 +285,7 @@ static int find_group_orlov(struct super parent_group = (unsigned)group % ngroups; for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; - desc = ext4_get_group_desc (sb, group, &bh); + desc = ext4_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_used_dirs_count) >= best_ndir) @@ -322,7 +320,7 @@ static int find_group_orlov(struct super for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; - desc = ext4_get_group_desc (sb, group, &bh); + desc = ext4_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_used_dirs_count) >= max_dirs) @@ -337,7 +335,7 @@ static int find_group_orlov(struct super fallback: for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; - desc = ext4_get_group_desc (sb, group, &bh); + desc = ext4_get_group_desc (sb, group, NULL); if (!desc || !desc->bg_free_inodes_count) continue; if (le16_to_cpu(desc->bg_free_inodes_count) >= avefreei) @@ -361,14 +359,13 @@ static int find_group_other(struct super int parent_group = EXT4_I(parent)->i_block_group; int ngroups = EXT4_SB(sb)->s_groups_count; struct ext4_group_desc *desc; - struct buffer_head *bh; int group, i; /* * Try to place the inode in its parent directory */ group = parent_group; - desc = ext4_get_group_desc (sb, group, &bh); + desc = ext4_get_group_desc (sb, group, NULL); if (desc && le16_to_cpu(desc->bg_free_inodes_count) && le16_to_cpu(desc->bg_free_blocks_count)) return group; @@ -392,7 +389,7 @@ static int find_group_other(struct super group += i; if (group >= ngroups) group -= ngroups; - desc = ext4_get_group_desc (sb, group, &bh); + desc = ext4_get_group_desc (sb, group, NULL); if (desc && le16_to_cpu(desc->bg_free_inodes_count) && le16_to_cpu(desc->bg_free_blocks_count)) return group; @@ -406,7 +403,7 @@ static int find_group_other(struct super for (i = 0; i < ngroups; i++) { if (++group >= ngroups) group = 0; - desc = ext4_get_group_desc (sb, group, &bh); + desc = ext4_get_group_desc (sb, group, NULL); if (desc && le16_to_cpu(desc->bg_free_inodes_count)) return group; }