[PATCH 30/39] ocfs2: Add an insertion check to ocfs2_extent_tree_operations.

Mark Fasheh
2008-09-24T22:09:53Z

From: Joel Becker <joel.becker@oracle.com>

A couple places check an extent_tree for a valid inode. We move that
out to add an eo_insert_check() operation. It can be called from
ocfs2_insert_extent() and elsewhere.

We also have the wrapper calls ocfs2_et_insert_check() and
ocfs2_et_sanity_check() ignore NULL ops. That way we don't have to
provide useless operations for xattr types.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
---
fs/ocfs2/alloc.c | 69 ++++++++++++++++++++++++++++++++++-------------------
1 files changed, 44 insertions(+), 25 deletions(-)

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 243bacf..2083c2c 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -71,6 +71,9 @@ struct ocfs2_extent_tree_operations {
void (*eo_update_clusters)(struct inode *inode,
struct ocfs2_extent_tree *et,
u32 new_clusters);
+ int (*eo_insert_check)(struct inode *inode,
+ struct ocfs2_extent_tree *et,
+ struct ocfs2_extent_rec *rec);
int (*eo_sanity_check)(struct inode *inode, struct ocfs2_extent_tree *et);

/* These are internal to ocfs2_extent_tree and don't have
@@ -125,6 +128,25 @@ static void ocfs2_dinode_update_clusters(struct inode *inode,
spin_unlock(&OCFS2_I(inode)->ip_lock);
}

+static int ocfs2_dinode_insert_check(struct inode *inode,
+ struct ocfs2_extent_tree *et,
+ struct ocfs2_extent_rec *rec)
+{
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+
+ BUG_ON(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL);
+ mlog_bug_on_msg(!ocfs2_sparse_alloc(osb) &&
+ (OCFS2_I(inode)->ip_clusters != rec->e_cpos),
+ "Device %s, asking for sparse allocation: inode %llu, "
+ "cpos %u, clusters %u\n",
+ osb->dev_str,
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ rec->e_cpos,
+ OCFS2_I(inode)->ip_clusters);
+
+ return 0;
+}
+
static int ocfs2_dinode_sanity_check(struct inode *inode,
struct ocfs2_extent_tree *et)
{
@@ -148,6 +170,7 @@ static struct ocfs2_extent_tree_operations ocfs2_dinode_et_ops = {
.eo_set_last_eb_blk = ocfs2_dinode_set_last_eb_blk,
.eo_get_last_eb_blk = ocfs2_dinode_get_last_eb_blk,
.eo_update_clusters = ocfs2_dinode_update_clusters,
+ .eo_insert_check = ocfs2_dinode_insert_check,
.eo_sanity_check = ocfs2_dinode_sanity_check,
.eo_fill_root_el = ocfs2_dinode_fill_root_el,
};
@@ -186,17 +209,10 @@ static void ocfs2_xattr_value_update_clusters(struct inode *inode,
le32_add_cpu(&xv->xr_clusters, clusters);
}

-static int ocfs2_xattr_value_sanity_check(struct inode *inode,
- struct ocfs2_extent_tree *et)
-{
- return 0;
-}
-
static struct ocfs2_extent_tree_operations ocfs2_xattr_value_et_ops = {
.eo_set_last_eb_blk = ocfs2_xattr_value_set_last_eb_blk,
.eo_get_last_eb_blk = ocfs2_xattr_value_get_last_eb_blk,
.eo_update_clusters = ocfs2_xattr_value_update_clusters,
- .eo_sanity_check = ocfs2_xattr_value_sanity_check,
.eo_fill_root_el = ocfs2_xattr_value_fill_root_el,
};

@@ -241,17 +257,10 @@ static void ocfs2_xattr_tree_update_clusters(struct inode *inode,
le32_add_cpu(&xb->xb_attrs.xb_root.xt_clusters, clusters);
}

-static int ocfs2_xattr_tree_sanity_check(struct inode *inode,
- struct ocfs2_extent_tree *et)
-{
- return 0;
-}
-
static struct ocfs2_extent_tree_operations ocfs2_xattr_tree_et_ops = {
.eo_set_last_eb_blk = ocfs2_xattr_tree_set_last_eb_blk,
.eo_get_last_eb_blk = ocfs2_xattr_tree_get_last_eb_blk,
.eo_update_clusters = ocfs2_xattr_tree_update_clusters,
- .eo_sanity_check = ocfs2_xattr_tree_sanity_check,
.eo_fill_root_el = ocfs2_xattr_tree_fill_root_el,
.eo_fill_max_leaf_clusters = ocfs2_xattr_tree_fill_max_leaf_clusters,
};
@@ -344,10 +353,25 @@ static inline void ocfs2_et_update_clusters(struct inode *inode,
et->et_ops->eo_update_clusters(inode, et, clusters);
}

+static inline int ocfs2_et_insert_check(struct inode *inode,
+ struct ocfs2_extent_tree *et,
+ struct ocfs2_extent_rec *rec)
+{
+ int ret = 0;
+
+ if (et->et_ops->eo_insert_check)
+ ret = et->et_ops->eo_insert_check(inode, et, rec);
+ return ret;
+}
+
static inline int ocfs2_et_sanity_check(struct inode *inode,
struct ocfs2_extent_tree *et)
{
- return et->et_ops->eo_sanity_check(inode, et);
+ int ret = 0;
+
+ if (et->et_ops->eo_sanity_check)
+ ret = et->et_ops->eo_sanity_check(inode, et);
+ return ret;
}

static void ocfs2_free_truncate_context(struct ocfs2_truncate_context *tc);
@@ -4408,24 +4432,19 @@ static int ocfs2_insert_extent(struct ocfs2_super *osb,
struct ocfs2_insert_type insert = {0, };
struct ocfs2_extent_rec rec;

- BUG_ON(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL);
-
mlog(0, "add %u clusters at position %u to inode %llu\n",
new_clusters, cpos, (unsigned long long)OCFS2_I(inode)->ip_blkno);

- mlog_bug_on_msg(!ocfs2_sparse_alloc(osb) &&
- (OCFS2_I(inode)->ip_clusters != cpos),
- "Device %s, asking for sparse allocation: inode %llu, "
- "cpos %u, clusters %u\n",
- osb->dev_str,
- (unsigned long long)OCFS2_I(inode)->ip_blkno, cpos,
- OCFS2_I(inode)->ip_clusters);
-
memset(&rec, 0, sizeof(rec));
rec.e_cpos = cpu_to_le32(cpos);
rec.e_blkno = cpu_to_le64(start_blk);
rec.e_leaf_clusters = cpu_to_le16(new_clusters);
rec.e_flags = flags;
+ status = ocfs2_et_insert_check(inode, et, &rec);
+ if (status) {
+ mlog_errno(status);
+ goto bail;
+ }

status = ocfs2_figure_insert_type(inode, et, &last_eb_bh, &rec,
&free_records, &insert);
--
1.5.4.5