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ocfs2: reserve inline space for extended attribute

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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>
This commit is contained in:
Tiger Yang 2008-08-18 17:08:55 +08:00 committed by Mark Fasheh
parent f56654c435
commit fdd77704a8
4 changed files with 62 additions and 9 deletions
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22
fs/ocfs2/alloc.c
View File

@ -6577,20 +6577,29 @@ 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 inode *inode,
struct ocfs2_dinode *di)
{
unsigned int blocksize = 1 << inode->i_sb->s_blocksize_bits;
unsigned int xattrsize = le16_to_cpu(di->i_xattr_inline_size);
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, blocksize -
offsetof(struct ocfs2_dinode, id2) -
xattrsize);
else
memset(&di->id2, 0, 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);
ocfs2_zero_dinode_id2_with_xattr(inode, di);
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(
ocfs2_extent_recs_per_inode_with_xattr(inode->i_sb, di));
}
void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di)
@ -6607,9 +6616,10 @@ 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, di);
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));
}
int ocfs2_convert_inline_data_to_extents(struct inode *inode,

1
fs/ocfs2/ocfs2.h
View File

@ -245,6 +245,7 @@ struct ocfs2_super
int s_sectsize_bits;
int s_clustersize;
int s_clustersize_bits;
unsigned int s_xattr_inline_size;
atomic_t vol_state;
struct mutex recovery_lock;

46
fs/ocfs2/ocfs2_fs.h
View File

@ -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;

2
fs/ocfs2/super.c
View File

@ -1424,6 +1424,8 @@ 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;
INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);