lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-Id: <1400185026-3972-2-git-send-email-jack@suse.cz> Date: Thu, 15 May 2014 22:17:05 +0200 From: Jan Kara <jack@...e.cz> To: linux-ext4@...r.kernel.org Cc: Ted Tso <tytso@....edu>, Thavatchai Makphaibulchoke <thavatchai.makpahibulchoke@...com>, Jan Kara <jack@...e.cz> Subject: [PATCH 1/2] ext4: Use sbi in ext4_orphan_{add|del}() Use sbi pointer consistently in ext4_orphan_del() instead of opencoding it sometimes. Also ext4_orphan_add() uses EXT4_SB(sb) often so create sbi variable for it as well and use it. Signed-off-by: Jan Kara <jack@...e.cz> --- fs/ext4/namei.c | 31 +++++++++++++++---------------- 1 file changed, 15 insertions(+), 16 deletions(-) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 1cb84f78909e..5fcaa85b6dc5 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -2550,13 +2550,14 @@ static int empty_dir(struct inode *inode) int ext4_orphan_add(handle_t *handle, struct inode *inode) { struct super_block *sb = inode->i_sb; + struct ext4_sb_info *sbi = EXT4_SB(sb); struct ext4_iloc iloc; int err = 0, rc; - if (!EXT4_SB(sb)->s_journal) + if (!sbi->s_journal) return 0; - mutex_lock(&EXT4_SB(sb)->s_orphan_lock); + mutex_lock(&sbi->s_orphan_lock); if (!list_empty(&EXT4_I(inode)->i_orphan)) goto out_unlock; @@ -2569,8 +2570,8 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode) J_ASSERT((S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) || inode->i_nlink == 0); - BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); - err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh); + BUFFER_TRACE(sbi->s_sbh, "get_write_access"); + err = ext4_journal_get_write_access(handle, sbi->s_sbh); if (err) goto out_unlock; @@ -2582,12 +2583,12 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode) * orphan list. If so skip on-disk list modification. */ if (NEXT_ORPHAN(inode) && NEXT_ORPHAN(inode) <= - (le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count))) + (le32_to_cpu(sbi->s_es->s_inodes_count))) goto mem_insert; /* Insert this inode at the head of the on-disk orphan list... */ - NEXT_ORPHAN(inode) = le32_to_cpu(EXT4_SB(sb)->s_es->s_last_orphan); - EXT4_SB(sb)->s_es->s_last_orphan = cpu_to_le32(inode->i_ino); + NEXT_ORPHAN(inode) = le32_to_cpu(sbi->s_es->s_last_orphan); + sbi->s_es->s_last_orphan = cpu_to_le32(inode->i_ino); err = ext4_handle_dirty_super(handle, sb); rc = ext4_mark_iloc_dirty(handle, inode, &iloc); if (!err) @@ -2603,14 +2604,14 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode) * anyway on the next recovery. */ mem_insert: if (!err) - list_add(&EXT4_I(inode)->i_orphan, &EXT4_SB(sb)->s_orphan); + list_add(&EXT4_I(inode)->i_orphan, &sbi->s_orphan); jbd_debug(4, "superblock will point to %lu\n", inode->i_ino); jbd_debug(4, "orphan inode %lu will point to %d\n", inode->i_ino, NEXT_ORPHAN(inode)); out_unlock: - mutex_unlock(&EXT4_SB(sb)->s_orphan_lock); - ext4_std_error(inode->i_sb, err); + mutex_unlock(&sbi->s_orphan_lock); + ext4_std_error(sb, err); return err; } @@ -2622,22 +2623,20 @@ int ext4_orphan_del(handle_t *handle, struct inode *inode) { struct list_head *prev; struct ext4_inode_info *ei = EXT4_I(inode); - struct ext4_sb_info *sbi; + struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); __u32 ino_next; struct ext4_iloc iloc; int err = 0; - if ((!EXT4_SB(inode->i_sb)->s_journal) && - !(EXT4_SB(inode->i_sb)->s_mount_state & EXT4_ORPHAN_FS)) + if (!sbi->s_journal && !(sbi->s_mount_state & EXT4_ORPHAN_FS)) return 0; - mutex_lock(&EXT4_SB(inode->i_sb)->s_orphan_lock); + mutex_lock(&sbi->s_orphan_lock); if (list_empty(&ei->i_orphan)) goto out; ino_next = NEXT_ORPHAN(inode); prev = ei->i_orphan.prev; - sbi = EXT4_SB(inode->i_sb); jbd_debug(4, "remove inode %lu from orphan list\n", inode->i_ino); @@ -2683,7 +2682,7 @@ int ext4_orphan_del(handle_t *handle, struct inode *inode) out_err: ext4_std_error(inode->i_sb, err); out: - mutex_unlock(&EXT4_SB(inode->i_sb)->s_orphan_lock); + mutex_unlock(&sbi->s_orphan_lock); return err; out_brelse: -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists