mirror of https://gitee.com/openkylin/linux.git
[GFS2] Finally get ref counting correct
The last patch missed some other instances of incorrect ref counting, this fixes all of those too. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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@ -776,9 +776,9 @@ static struct gfs2_dirent *gfs2_dirent_search(struct inode *inode,
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goto got_dent;
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leaf = (struct gfs2_leaf *)bh->b_data;
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ln = be64_to_cpu(leaf->lf_next);
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brelse(bh);
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if (!ln)
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break;
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brelse(bh);
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error = get_leaf(ip, ln, &bh);
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} while(!error);
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@ -789,9 +789,11 @@ static struct gfs2_dirent *gfs2_dirent_search(struct inode *inode,
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if (error)
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return ERR_PTR(error);
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dent = gfs2_dirent_scan(inode, bh->b_data, bh->b_size, scan, name, NULL);
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brelse(bh);
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got_dent:
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if (unlikely(IS_ERR(dent))) {
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brelse(bh);
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bh = NULL;
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}
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*pbh = bh;
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return dent;
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}
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@ -1475,6 +1477,7 @@ int gfs2_dir_search(struct inode *dir, const struct qstr *name,
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brelse(bh);
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return 0;
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}
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brelse(bh);
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return -ENOENT;
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}
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@ -1616,6 +1619,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name)
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previous entry otherwise */
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dent = gfs2_dirent_search(dip->i_vnode, name, gfs2_dirent_prev, &bh);
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if (!dent) {
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brelse(bh);
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gfs2_consist_inode(dip);
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return -EIO;
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}
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@ -1636,8 +1640,8 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name)
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if (!entries)
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gfs2_consist_inode(dip);
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leaf->lf_entries = cpu_to_be16(--entries);
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brelse(bh);
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}
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brelse(bh);
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error = gfs2_meta_inode_buffer(dip, &bh);
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if (error)
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@ -1676,6 +1680,7 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
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dent = gfs2_dirent_search(dip->i_vnode, filename, gfs2_dirent_find, &bh);
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if (!dent) {
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brelse(bh);
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gfs2_consist_inode(dip);
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return -EIO;
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}
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@ -1955,8 +1960,10 @@ int gfs2_diradd_alloc_required(struct inode *inode,
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struct buffer_head *bh;
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dent = gfs2_dirent_search(inode, name, gfs2_dirent_find_space, &bh);
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if (!dent)
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if (!dent) {
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brelse(bh);
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return 1;
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}
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if (IS_ERR(dent))
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return PTR_ERR(dent);
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brelse(bh);
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@ -196,7 +196,6 @@ int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks)
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void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks)
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{
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up_read(&sdp->sd_log_flush_lock);
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gfs2_log_lock(sdp);
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sdp->sd_log_blks_free += blks;
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@ -204,6 +203,7 @@ void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks)
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gfs2_assert_withdraw(sdp,
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sdp->sd_log_blks_free <= sdp->sd_jdesc->jd_blocks);
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gfs2_log_unlock(sdp);
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up_read(&sdp->sd_log_flush_lock);
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}
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static uint64_t log_bmap(struct gfs2_sbd *sdp, unsigned int lbn)
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