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authorTiger Yang <tiger.yang@oracle.com>2008-08-18 17:08:55 +0800
committerMark Fasheh <mfasheh@suse.com>2008-10-13 16:57:02 -0700
commitfdd77704a8b4666a32120fcd1e4a9fedaf3263d8 (patch)
treebfc7ba78487c5c6287354b2b07ee4042bff566bc /fs/ocfs2/ocfs2_fs.h
parentf56654c435c06f2b2bd5751889b1a08a3add7d6c (diff)
downloadop-kernel-dev-fdd77704a8b4666a32120fcd1e4a9fedaf3263d8.zip
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ocfs2: reserve inline space for extended attribute
Add the structures and helper functions we want for handling inline extended attributes. We also update the inline-data handlers so that they properly function in the event that we have both inline data and inline attributes sharing an inode block. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/ocfs2_fs.h')
-rw-r--r--fs/ocfs2/ocfs2_fs.h46
1 files changed, 43 insertions, 3 deletions
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 1b46505..1055ba0 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -300,6 +300,12 @@ struct ocfs2_new_group_input {
*/
#define OCFS2_DEFAULT_LOCAL_ALLOC_SIZE 8
+/*
+ * Inline extended attribute size (in bytes)
+ * The value chosen should be aligned to 16 byte boundaries.
+ */
+#define OCFS2_MIN_XATTR_INLINE_SIZE 256
+
struct ocfs2_system_inode_info {
char *si_name;
int si_iflags;
@@ -622,7 +628,8 @@ struct ocfs2_dinode {
belongs to */
__le16 i_suballoc_bit; /* Bit offset in suballocator
block group */
-/*10*/ __le32 i_reserved0;
+/*10*/ __le16 i_reserved0;
+ __le16 i_xattr_inline_size;
__le32 i_clusters; /* Cluster count */
__le32 i_uid; /* Owner UID */
__le32 i_gid; /* Owning GID */
@@ -641,11 +648,12 @@ struct ocfs2_dinode {
__le32 i_atime_nsec;
__le32 i_ctime_nsec;
__le32 i_mtime_nsec;
- __le32 i_attr;
+/*70*/ __le32 i_attr;
__le16 i_orphaned_slot; /* Only valid when OCFS2_ORPHANED_FL
was set in i_flags */
__le16 i_dyn_features;
-/*70*/ __le64 i_reserved2[8];
+ __le64 i_xattr_loc;
+/*80*/ __le64 i_reserved2[7];
/*B8*/ union {
__le64 i_pad1; /* Generic way to refer to this
64bit union */
@@ -846,6 +854,20 @@ static inline int ocfs2_max_inline_data(struct super_block *sb)
offsetof(struct ocfs2_dinode, id2.i_data.id_data);
}
+static inline int ocfs2_max_inline_data_with_xattr(struct super_block *sb,
+ struct ocfs2_dinode *di)
+{
+ unsigned int xattrsize = le16_to_cpu(di->i_xattr_inline_size);
+
+ if (le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_XATTR_FL)
+ return sb->s_blocksize -
+ offsetof(struct ocfs2_dinode, id2.i_data.id_data) -
+ xattrsize;
+ else
+ return sb->s_blocksize -
+ offsetof(struct ocfs2_dinode, id2.i_data.id_data);
+}
+
static inline int ocfs2_extent_recs_per_inode(struct super_block *sb)
{
int size;
@@ -856,6 +878,24 @@ static inline int ocfs2_extent_recs_per_inode(struct super_block *sb)
return size / sizeof(struct ocfs2_extent_rec);
}
+static inline int ocfs2_extent_recs_per_inode_with_xattr(
+ struct super_block *sb,
+ struct ocfs2_dinode *di)
+{
+ int size;
+ unsigned int xattrsize = le16_to_cpu(di->i_xattr_inline_size);
+
+ if (le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_XATTR_FL)
+ size = sb->s_blocksize -
+ offsetof(struct ocfs2_dinode, id2.i_list.l_recs) -
+ xattrsize;
+ else
+ size = sb->s_blocksize -
+ offsetof(struct ocfs2_dinode, id2.i_list.l_recs);
+
+ return size / sizeof(struct ocfs2_extent_rec);
+}
+
static inline int ocfs2_chain_recs_per_inode(struct super_block *sb)
{
int size;
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