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| author | Joel Becker <joel.becker@oracle.com> | 2008-11-13 23:49:16 +0100 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2009-01-05 17:36:53 +0100 |
| commit | 5e96581a377fc6bd76e9b112da9aeb8a7ae8bf22 (patch) | |
| tree | ce2e1d8819b6020567828ca9021438c0824aa8d4 /fs/ocfs2/alloc.h | |
| parent | ocfs2: Morph the haphazard OCFS2_IS_VALID_GROUP_DESC() checks. (diff) | |
| download | linux-5e96581a377fc6bd76e9b112da9aeb8a7ae8bf22.tar.xz linux-5e96581a377fc6bd76e9b112da9aeb8a7ae8bf22.zip | |
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/alloc.h')
| -rw-r--r-- | fs/ocfs2/alloc.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h index 0fbf8fc55a49..59d37d1b7d4c 100644 --- a/fs/ocfs2/alloc.h +++ b/fs/ocfs2/alloc.h @@ -73,6 +73,14 @@ void ocfs2_init_xattr_value_extent_tree(struct ocfs2_extent_tree *et, struct buffer_head *bh, struct ocfs2_xattr_value_root *xv); +/* + * Read an extent block into *bh. If *bh is NULL, a bh will be + * allocated. This is a cached read. The extent block will be validated + * with ocfs2_validate_extent_block(). + */ +int ocfs2_read_extent_block(struct inode *inode, u64 eb_blkno, + struct buffer_head **bh); + struct ocfs2_alloc_context; int ocfs2_insert_extent(struct ocfs2_super *osb, handle_t *handle, |