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Diffstat (limited to 'fs/ocfs2/resize.c')
-rw-r--r--fs/ocfs2/resize.c76
1 files changed, 22 insertions, 54 deletions
diff --git a/fs/ocfs2/resize.c b/fs/ocfs2/resize.c
index ffd48db229a..424adaa5f90 100644
--- a/fs/ocfs2/resize.c
+++ b/fs/ocfs2/resize.c
@@ -106,8 +106,8 @@ static int ocfs2_update_last_group_and_inode(handle_t *handle,
mlog_entry("(new_clusters=%d, first_new_cluster = %u)\n",
new_clusters, first_new_cluster);
- ret = ocfs2_journal_access(handle, bm_inode, group_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_gd(handle, bm_inode, group_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out;
@@ -141,8 +141,8 @@ static int ocfs2_update_last_group_and_inode(handle_t *handle,
}
/* update the inode accordingly. */
- ret = ocfs2_journal_access(handle, bm_inode, bm_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, bm_inode, bm_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out_rollback;
@@ -314,6 +314,10 @@ int ocfs2_group_extend(struct inode * inode, int new_clusters)
fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
+ /* main_bm_bh is validated by inode read inside ocfs2_inode_lock(),
+ * so any corruption is a code bug. */
+ BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
+
if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
ocfs2_group_bitmap_size(osb->sb) * 8) {
mlog(ML_ERROR, "The disk is too old and small. "
@@ -322,30 +326,18 @@ int ocfs2_group_extend(struct inode * inode, int new_clusters)
goto out_unlock;
}
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(main_bm_inode->i_sb, fe);
- ret = -EIO;
- goto out_unlock;
- }
-
first_new_cluster = le32_to_cpu(fe->i_clusters);
lgd_blkno = ocfs2_which_cluster_group(main_bm_inode,
first_new_cluster - 1);
- ret = ocfs2_read_block(main_bm_inode, lgd_blkno, &group_bh);
+ ret = ocfs2_read_group_descriptor(main_bm_inode, fe, lgd_blkno,
+ &group_bh);
if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
}
-
group = (struct ocfs2_group_desc *)group_bh->b_data;
- ret = ocfs2_check_group_descriptor(inode->i_sb, fe, group);
- if (ret) {
- mlog_errno(ret);
- goto out_unlock;
- }
-
cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
if (le16_to_cpu(group->bg_bits) / cl_bpc + new_clusters >
le16_to_cpu(fe->id2.i_chain.cl_cpg)) {
@@ -398,41 +390,16 @@ static int ocfs2_check_new_group(struct inode *inode,
struct buffer_head *group_bh)
{
int ret;
- struct ocfs2_group_desc *gd;
+ struct ocfs2_group_desc *gd =
+ (struct ocfs2_group_desc *)group_bh->b_data;
u16 cl_bpc = le16_to_cpu(di->id2.i_chain.cl_bpc);
- unsigned int max_bits = le16_to_cpu(di->id2.i_chain.cl_cpg) *
- le16_to_cpu(di->id2.i_chain.cl_bpc);
-
- gd = (struct ocfs2_group_desc *)group_bh->b_data;
+ ret = ocfs2_check_group_descriptor(inode->i_sb, di, group_bh);
+ if (ret)
+ goto out;
- ret = -EIO;
- if (!OCFS2_IS_VALID_GROUP_DESC(gd))
- mlog(ML_ERROR, "Group descriptor # %llu isn't valid.\n",
- (unsigned long long)le64_to_cpu(gd->bg_blkno));
- else if (di->i_blkno != gd->bg_parent_dinode)
- mlog(ML_ERROR, "Group descriptor # %llu has bad parent "
- "pointer (%llu, expected %llu)\n",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- (unsigned long long)le64_to_cpu(gd->bg_parent_dinode),
- (unsigned long long)le64_to_cpu(di->i_blkno));
- else if (le16_to_cpu(gd->bg_bits) > max_bits)
- mlog(ML_ERROR, "Group descriptor # %llu has bit count of %u\n",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- le16_to_cpu(gd->bg_bits));
- else if (le16_to_cpu(gd->bg_free_bits_count) > le16_to_cpu(gd->bg_bits))
- mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
- "claims that %u are free\n",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- le16_to_cpu(gd->bg_bits),
- le16_to_cpu(gd->bg_free_bits_count));
- else if (le16_to_cpu(gd->bg_bits) > (8 * le16_to_cpu(gd->bg_size)))
- mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
- "max bitmap bits of %u\n",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- le16_to_cpu(gd->bg_bits),
- 8 * le16_to_cpu(gd->bg_size));
- else if (le16_to_cpu(gd->bg_chain) != input->chain)
+ ret = -EINVAL;
+ if (le16_to_cpu(gd->bg_chain) != input->chain)
mlog(ML_ERROR, "Group descriptor # %llu has bad chain %u "
"while input has %u set.\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
@@ -451,6 +418,7 @@ static int ocfs2_check_new_group(struct inode *inode,
else
ret = 0;
+out:
return ret;
}
@@ -568,8 +536,8 @@ int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
cl = &fe->id2.i_chain;
cr = &cl->cl_recs[input->chain];
- ret = ocfs2_journal_access(handle, main_bm_inode, group_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_gd(handle, main_bm_inode, group_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out_commit;
@@ -584,8 +552,8 @@ int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
goto out_commit;
}
- ret = ocfs2_journal_access(handle, main_bm_inode, main_bm_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, main_bm_inode, main_bm_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out_commit;