ocfs2: Wrap inode block reads in a dedicated function.
The ocfs2 code currently reads inodes off disk with a simple
ocfs2_read_block() call. Each place that does this has a different set
of sanity checks it performs. Some check only the signature. A couple
validate the block number (the block read vs di->i_blkno). A couple
others check for VALID_FL. Only one place validates i_fs_generation. A
couple check nothing. Even when an error is found, they don't all do
the same thing.
We wrap inode reading into ocfs2_read_inode_block(). This will validate
all the above fields, going readonly if they are invalid (they never
should be). ocfs2_read_inode_block_full() is provided for the places
that want to pass read_block flags. Every caller is passing a struct
inode with a valid ip_blkno, so we don't need a separate blkno argument
either.
We will remove the validation checks from the rest of the code in a
later commit, as they are no longer necessary.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 7655145..0134baf 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -531,15 +531,7 @@
goto leave;
}
- if (ocfs2_populate_inode(inode, fe, 1) < 0) {
- mlog(ML_ERROR, "populate inode failed! bh->b_blocknr=%llu, "
- "i_blkno=%llu, i_ino=%lu\n",
- (unsigned long long)(*new_fe_bh)->b_blocknr,
- (unsigned long long)le64_to_cpu(fe->i_blkno),
- inode->i_ino);
- BUG();
- }
-
+ ocfs2_populate_inode(inode, fe, 1);
ocfs2_inode_set_new(osb, inode);
if (!ocfs2_mount_local(osb)) {
status = ocfs2_create_new_inode_locks(inode);
@@ -1864,9 +1856,7 @@
mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
- status = ocfs2_read_block(orphan_dir_inode,
- OCFS2_I(orphan_dir_inode)->ip_blkno,
- &orphan_dir_bh);
+ status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
if (status < 0) {
mlog_errno(status);
goto leave;