[Ocfs2-devel] [PATCH 07/15] ocfs2: reserve inline space for extended attribute v2
Tiger Yang
tiger.yang at oracle.com
Fri Jun 27 00:27:34 PDT 2008
This patch reserve some space in inode block for extended attribute.
That space used to store extent list or inline data.
Signed-off-by: Tiger Yang <tiger.yang at oracle.com>
---
fs/ocfs2/alloc.c | 31 +++++++++++++++++++++++--------
fs/ocfs2/ocfs2.h | 3 +++
fs/ocfs2/ocfs2_fs.h | 36 ++++++++++++++++++++++++++++++++++--
fs/ocfs2/super.c | 2 ++
4 files changed, 62 insertions(+), 10 deletions(-)
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 3a06271..2df5a7f 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -6417,26 +6417,40 @@ out:
return ret;
}
-static void ocfs2_zero_dinode_id2(struct inode *inode, struct ocfs2_dinode *di)
+static void ocfs2_zero_dinode_id2_with_xattr(struct super_block *sb,
+ struct ocfs2_dinode *di,
+ int xattrsize)
{
- unsigned int blocksize = 1 << inode->i_sb->s_blocksize_bits;
-
- memset(&di->id2, 0, blocksize - offsetof(struct ocfs2_dinode, id2));
+ if (le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_XATTR_FL)
+ memset(&di->id2, 0, sb->s_blocksize -
+ offsetof(struct ocfs2_dinode, id2) -
+ xattrsize);
+ else
+ memset(&di->id2, 0, sb->s_blocksize -
+ offsetof(struct ocfs2_dinode, id2));
}
void ocfs2_dinode_new_extent_list(struct inode *inode,
struct ocfs2_dinode *di)
{
- ocfs2_zero_dinode_id2(inode, di);
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ int xattrsize = osb->s_xattr_inline_size;
+ int recs = ocfs2_extent_recs_per_inode_with_xattr(inode->i_sb,
+ di,
+ xattrsize);
+
+ ocfs2_zero_dinode_id2_with_xattr(inode->i_sb, di, xattrsize);
di->id2.i_list.l_tree_depth = 0;
di->id2.i_list.l_next_free_rec = 0;
- di->id2.i_list.l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(inode->i_sb));
+ di->id2.i_list.l_count = cpu_to_le16(recs);
}
void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di)
{
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_inline_data *idata = &di->id2.i_data;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ int xattrsize = osb->s_xattr_inline_size;
spin_lock(&oi->ip_lock);
oi->ip_dyn_features |= OCFS2_INLINE_DATA_FL;
@@ -6447,9 +6461,10 @@ void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di)
* We clear the entire i_data structure here so that all
* fields can be properly initialized.
*/
- ocfs2_zero_dinode_id2(inode, di);
+ ocfs2_zero_dinode_id2_with_xattr(inode->i_sb, di, xattrsize);
- idata->id_count = cpu_to_le16(ocfs2_max_inline_data(inode->i_sb));
+ idata->id_count = cpu_to_le16(
+ ocfs2_max_inline_data_with_xattr(inode->i_sb, di, xattrsize));
}
int ocfs2_convert_inline_data_to_extents(struct inode *inode,
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 3169237..5bf04ef 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -178,6 +178,8 @@ enum ocfs2_mount_options
#define OCFS2_OSB_HARD_RO 0x0002
#define OCFS2_OSB_ERROR_FS 0x0004
#define OCFS2_DEFAULT_ATIME_QUANTUM 60
+/* Inline extended attribute size (in bytes) */
+#define OCFS2_MIN_XATTR_INLINE_SIZE 256
struct ocfs2_journal;
struct ocfs2_slot_info;
@@ -227,6 +229,7 @@ struct ocfs2_super
int s_sectsize_bits;
int s_clustersize;
int s_clustersize_bits;
+ int s_xattr_inline_size;
atomic_t vol_state;
struct mutex recovery_lock;
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 6bbeef4..b64c160 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -641,11 +641,12 @@ 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 */
@@ -780,6 +781,19 @@ 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,
+ int xattrsize)
+{
+ 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;
@@ -790,6 +804,24 @@ 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 xattrsize)
+{
+ int 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;
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index df63ba2..c0a1cdf 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1421,6 +1421,8 @@ static int ocfs2_initialize_super(struct super_block *sb,
osb->slot_num = OCFS2_INVALID_SLOT;
+ osb->s_xattr_inline_size = OCFS2_MIN_XATTR_INLINE_SIZE;
+
osb->local_alloc_state = OCFS2_LA_UNUSED;
osb->local_alloc_bh = NULL;
--
1.5.4.4
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