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authorJoel Becker <joel.becker@oracle.com>2008-11-14 01:49:16 +0300
committerMark Fasheh <mfasheh@suse.com>2009-01-05 19:36:53 +0300
commit5e96581a377fc6bd76e9b112da9aeb8a7ae8bf22 (patch)
treece2e1d8819b6020567828ca9021438c0824aa8d4 /fs/ocfs2/extent_map.c
parent4203530613280281868b3ca36c817530bca3825c (diff)
downloadlinux-5e96581a377fc6bd76e9b112da9aeb8a7ae8bf22.tar.xz
ocfs2: Wrap extent block reads in a dedicated function.
We weren't consistently checking extent blocks after we read them. Most places checked the signature, but none checked h_blkno or h_fs_signature. Create a toplevel ocfs2_read_extent_block() that does the read and the validation. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/extent_map.c')
-rw-r--r--fs/ocfs2/extent_map.c23
1 files changed, 5 insertions, 18 deletions
diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index b686b31cf49c..0bd9d9698a24 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -293,7 +293,7 @@ static int ocfs2_last_eb_is_empty(struct inode *inode,
struct ocfs2_extent_block *eb;
struct ocfs2_extent_list *el;
- ret = ocfs2_read_block(inode, last_eb_blk, &eb_bh);
+ ret = ocfs2_read_extent_block(inode, last_eb_blk, &eb_bh);
if (ret) {
mlog_errno(ret);
goto out;
@@ -302,12 +302,6 @@ static int ocfs2_last_eb_is_empty(struct inode *inode,
eb = (struct ocfs2_extent_block *) eb_bh->b_data;
el = &eb->h_list;
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
- ret = -EROFS;
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, eb);
- goto out;
- }
-
if (el->l_tree_depth) {
ocfs2_error(inode->i_sb,
"Inode %lu has non zero tree depth in "
@@ -381,23 +375,16 @@ static int ocfs2_figure_hole_clusters(struct inode *inode,
if (le64_to_cpu(eb->h_next_leaf_blk) == 0ULL)
goto no_more_extents;
- ret = ocfs2_read_block(inode,
- le64_to_cpu(eb->h_next_leaf_blk),
- &next_eb_bh);
+ ret = ocfs2_read_extent_block(inode,
+ le64_to_cpu(eb->h_next_leaf_blk),
+ &next_eb_bh);
if (ret) {
mlog_errno(ret);
goto out;
}
- next_eb = (struct ocfs2_extent_block *)next_eb_bh->b_data;
-
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(next_eb)) {
- ret = -EROFS;
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, next_eb);
- goto out;
- }
+ next_eb = (struct ocfs2_extent_block *)next_eb_bh->b_data;
el = &next_eb->h_list;
-
i = ocfs2_search_for_hole_index(el, v_cluster);
}