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| author | Tiger Yang <tiger.yang@oracle.com> | 2008-08-18 17:11:00 +0800 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2008-10-13 16:57:02 -0700 |
| commit | cf1d6c763fbcb115263114302485ad17e7933d87 (patch) | |
| tree | 85717dc9d20b7ac1e31b683653933f2d30099f44 /fs/ocfs2/ocfs2_fs.h | |
| parent | fdd77704a8b4666a32120fcd1e4a9fedaf3263d8 (diff) | |
| download | linux-cf1d6c763fbcb115263114302485ad17e7933d87.tar.gz | |
ocfs2: Add extended attribute support
This patch implements storing extended attributes both in inode or a single external block. We only store EA's in-inode when blocksize > 512 or that inode block has free space for it. When an EA's value is larger than 80 bytes, we will store the value via b-tree outside inode or 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.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h index 1055ba0af9bb..98e1f8bba0e1 100644 --- a/fs/ocfs2/ocfs2_fs.h +++ b/fs/ocfs2/ocfs2_fs.h @@ -570,7 +570,7 @@ struct ocfs2_super_block { /*40*/ __le16 s_max_slots; /* Max number of simultaneous mounts before tunefs required */ __le16 s_tunefs_flag; - __le32 s_reserved1; + __le32 s_uuid_hash; /* hash value of uuid */ __le64 s_first_cluster_group; /* Block offset of 1st cluster * group header */ /*50*/ __u8 s_label[OCFS2_MAX_VOL_LABEL_LEN]; /* Label for mounting, etc. */ @@ -787,7 +787,11 @@ struct ocfs2_xattr_tree_root { /*10*/ struct ocfs2_extent_list xt_list; /* Extent record list */ }; -#define OCFS2_XATTR_INDEXED 0x1 +#define OCFS2_XATTR_INDEXED 0x1 +#define OCFS2_HASH_SHIFT 5 +#define OCFS2_XATTR_ROUND 3 +#define OCFS2_XATTR_SIZE(size) (((size) + OCFS2_XATTR_ROUND) & \ + ~(OCFS2_XATTR_ROUND)) /* * On disk structure for xattr block. |