From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tao Ma Date: Thu, 22 Apr 2010 14:40:30 +0800 Subject: [Ocfs2-devel] [PATCH 16/17] ocfs2: Set ac_last_group properly with discontig group. In-Reply-To: <4BCFEF22.7080607@oracle.com> References: <4BCFEF22.7080607@oracle.com> Message-ID: <1271918431-8135-16-git-send-email-tao.ma@oracle.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ocfs2-devel@oss.oracle.com ac_last_group is used to record the last block group we used during allocation. But the initialization process only calls ocfs2_which_suballoc_group and fails to use suballoc_loc properly. So let us do it. Another function ocfs2_test_suballoc_bit also needs fix. I have searched all the callers of ocfs2_which_suballoc_group, and all the callers notices suballoc_loc now. Signed-off-by: Tao Ma --- fs/ocfs2/suballoc.c | 31 +++++++++++++++++++------------ 1 files changed, 19 insertions(+), 12 deletions(-) diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c index a971ec6..693656d 100644 --- a/fs/ocfs2/suballoc.c +++ b/fs/ocfs2/suballoc.c @@ -1986,10 +1986,10 @@ bail: } static void ocfs2_init_inode_ac_group(struct inode *dir, - struct buffer_head *parent_fe_bh, + struct buffer_head *parent_di_bh, struct ocfs2_alloc_context *ac) { - struct ocfs2_dinode *fe = (struct ocfs2_dinode *)parent_fe_bh->b_data; + struct ocfs2_dinode *di = (struct ocfs2_dinode *)parent_di_bh->b_data; /* * Try to allocate inodes from some specific group. * @@ -2003,10 +2003,14 @@ static void ocfs2_init_inode_ac_group(struct inode *dir, if (OCFS2_I(dir)->ip_last_used_group && OCFS2_I(dir)->ip_last_used_slot == ac->ac_alloc_slot) ac->ac_last_group = OCFS2_I(dir)->ip_last_used_group; - else if (le16_to_cpu(fe->i_suballoc_slot) == ac->ac_alloc_slot) - ac->ac_last_group = ocfs2_which_suballoc_group( - le64_to_cpu(fe->i_blkno), - le16_to_cpu(fe->i_suballoc_bit)); + else if (le16_to_cpu(di->i_suballoc_slot) == ac->ac_alloc_slot) { + if (di->i_suballoc_loc) + ac->ac_last_group = le64_to_cpu(di->i_suballoc_loc); + else + ac->ac_last_group = ocfs2_which_suballoc_group( + le64_to_cpu(di->i_blkno), + le16_to_cpu(di->i_suballoc_bit)); + } } static inline void ocfs2_save_inode_ac_group(struct inode *dir, @@ -2585,7 +2589,7 @@ static int ocfs2_test_suballoc_bit(struct ocfs2_super *osb, struct buffer_head *alloc_bh, u64 blkno, u16 bit, int *res) { - struct ocfs2_dinode *alloc_fe; + struct ocfs2_dinode *alloc_di; struct ocfs2_group_desc *group; struct buffer_head *group_bh = NULL; u64 bg_blkno; @@ -2594,17 +2598,20 @@ static int ocfs2_test_suballoc_bit(struct ocfs2_super *osb, mlog_entry("blkno: %llu bit: %u\n", (unsigned long long)blkno, (unsigned int)bit); - alloc_fe = (struct ocfs2_dinode *)alloc_bh->b_data; - if ((bit + 1) > ocfs2_bits_per_group(&alloc_fe->id2.i_chain)) { + alloc_di = (struct ocfs2_dinode *)alloc_bh->b_data; + if ((bit + 1) > ocfs2_bits_per_group(&alloc_di->id2.i_chain)) { mlog(ML_ERROR, "suballoc bit %u out of range of %u\n", (unsigned int)bit, - ocfs2_bits_per_group(&alloc_fe->id2.i_chain)); + ocfs2_bits_per_group(&alloc_di->id2.i_chain)); status = -EINVAL; goto bail; } - bg_blkno = ocfs2_which_suballoc_group(blkno, bit); - status = ocfs2_read_group_descriptor(suballoc, alloc_fe, bg_blkno, + if (alloc_di->i_suballoc_loc) + bg_blkno = le64_to_cpu(alloc_di->i_suballoc_loc); + else + bg_blkno = ocfs2_which_suballoc_group(blkno, bit); + status = ocfs2_read_group_descriptor(suballoc, alloc_di, bg_blkno, &group_bh); if (status < 0) { mlog(ML_ERROR, "read group %llu failed %d\n", -- 1.5.5