[PATCH 10/39] ocfs2: Add helper function in uptodate.c for removing xattr clusters

Mark Fasheh
2008-09-24T22:03:16Z

From: Tao Ma <tao.ma@oracle.com>

The old uptodate only handles the issue of removing one buffer_head from
ocfs2 inode's buffer cache. With xattr clusters, we may need to remove
multiple buffer_head's at a time.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
---
fs/ocfs2/uptodate.c | 32 ++++++++++++++++++++++++++------
fs/ocfs2/uptodate.h | 3 +++
2 files changed, 29 insertions(+), 6 deletions(-)

diff --git a/fs/ocfs2/uptodate.c b/fs/ocfs2/uptodate.c
index 4da8851..e26459e 100644
--- a/fs/ocfs2/uptodate.c
+++ b/fs/ocfs2/uptodate.c
@@ -511,14 +511,10 @@ static void ocfs2_remove_metadata_tree(struct ocfs2_caching_info *ci,
ci->ci_num_cached--;
}

-/* Called when we remove a chunk of metadata from an inode. We don't
- * bother reverting things to an inlined array in the case of a remove
- * which moves us back under the limit. */
-void ocfs2_remove_from_cache(struct inode *inode,
- struct buffer_head *bh)
+static void ocfs2_remove_block_from_cache(struct inode *inode,
+ sector_t block)
{
int index;
- sector_t block = bh->b_blocknr;
struct ocfs2_meta_cache_item *item = NULL;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_caching_info *ci = &oi->ip_metadata_cache;
@@ -544,6 +540,30 @@ void ocfs2_remove_from_cache(struct inode *inode,
kmem_cache_free(ocfs2_uptodate_cachep, item);
}

+/*
+ * Called when we remove a chunk of metadata from an inode. We don't
+ * bother reverting things to an inlined array in the case of a remove
+ * which moves us back under the limit.
+ */
+void ocfs2_remove_from_cache(struct inode *inode,
+ struct buffer_head *bh)
+{
+ sector_t block = bh->b_blocknr;
+
+ ocfs2_remove_block_from_cache(inode, block);
+}
+
+/* Called when we remove xattr clusters from an inode. */
+void ocfs2_remove_xattr_clusters_from_cache(struct inode *inode,
+ sector_t block,
+ u32 c_len)
+{
+ u64 i, b_len = ocfs2_clusters_to_blocks(inode->i_sb, 1) * c_len;
+
+ for (i = 0; i < b_len; i++, block++)
+ ocfs2_remove_block_from_cache(inode, block);
+}
+
int __init init_ocfs2_uptodate_cache(void)
{
ocfs2_uptodate_cachep = kmem_cache_create("ocfs2_uptodate",
diff --git a/fs/ocfs2/uptodate.h b/fs/ocfs2/uptodate.h
index 2e73206..531b4b3 100644
--- a/fs/ocfs2/uptodate.h
+++ b/fs/ocfs2/uptodate.h
@@ -40,6 +40,9 @@ void ocfs2_set_new_buffer_uptodate(struct inode *inode,
struct buffer_head *bh);
void ocfs2_remove_from_cache(struct inode *inode,
struct buffer_head *bh);
+void ocfs2_remove_xattr_clusters_from_cache(struct inode *inode,
+ sector_t block,
+ u32 c_len);
int ocfs2_buffer_read_ahead(struct inode *inode,
struct buffer_head *bh);

--
1.5.4.5