/* * JFS-private inode information
*/ struct jfs_inode_info { int fileset; /* fileset number (always 16)*/
uint mode2; /* jfs-specific mode */
kuid_t saved_uid; /* saved for uid mount option */
kgid_t saved_gid; /* saved for gid mount option */
pxd_t ixpxd; /* inode extent descriptor */
dxd_t acl; /* dxd describing acl */
dxd_t ea; /* dxd describing ea */
time64_t otime; /* time created */
uint next_index; /* next available directory entry index */ int acltype; /* Type of ACL */ short btorder; /* access order */ short btindex; /* btpage entry index*/ struct inode *ipimap; /* inode map */ unsignedlong cflag; /* commit flags */
u64 agstart; /* agstart of the containing IAG */
u16 bxflag; /* xflag of pseudo buffer? */
unchar pad; signedchar active_ag; /* ag currently allocating from */
lid_t blid; /* lid of pseudo buffer? */
lid_t atlhead; /* anonymous tlock list head */
lid_t atltail; /* anonymous tlock list tail */
spinlock_t ag_lock; /* protects active_ag */ struct list_head anon_inode_list; /* inodes having anonymous txns */ /* * rdwrlock serializes xtree between reads & writes and synchronizes * changes to special inodes. It's use would be redundant on * directories since the i_mutex taken in the VFS is sufficient.
*/ struct rw_semaphore rdwrlock; /* * commit_mutex serializes transaction processing on an inode. * It must be taken after beginning a transaction (txBegin), since * dirty inodes may be committed while a new transaction on the * inode is blocked in txBegin or TxBeginAnon
*/ struct mutex commit_mutex; /* xattr_sem allows us to access the xattrs without taking i_mutex */ struct rw_semaphore xattr_sem;
lid_t xtlid; /* lid of xtree lock on directory */ union { struct {
xtroot_t _xtroot; /* 288: xtree root */ struct inomap *_imap; /* 4: inode map header */
} file; struct { struct dir_table_slot _table[12]; /* 96: dir index */
dtroot_t _dtroot; /* 288: dtree root */
} dir; struct {
unchar _unused[16]; /* 16: */
dxd_t _dxd; /* 16: */ /* _inline may overflow into _inline_ea when needed */ /* _inline_ea may overlay the last part of * file._xtroot if maxentry = XTROOTINITSLOT
*/ union { struct { /* 128: inline symlink */
unchar _inline[128]; /* 128: inline extended attr */
unchar _inline_ea[128];
};
unchar _inline_all[256];
};
} link;
} u; #ifdef CONFIG_QUOTA struct dquot __rcu *i_dquot[MAXQUOTAS]; #endif
u32 dev; /* will die when we get wide dev_t */ struct inode vfs_inode;
}; #define i_xtroot u.file._xtroot #define i_imap u.file._imap #define i_dirtable u.dir._table #define i_dtroot u.dir._dtroot #define i_inline u.link._inline #define i_inline_ea u.link._inline_ea #define i_inline_all u.link._inline_all
/* * cflag
*/ enum cflags {
COMMIT_Nolink, /* inode committed with zero link count */
COMMIT_Inlineea, /* commit inode inline EA */
COMMIT_Freewmap, /* free WMAP at iClose() */
COMMIT_Dirty, /* Inode is really dirty */
COMMIT_Dirtable, /* commit changes to di_dirtable */
COMMIT_Stale, /* data extent is no longer valid */
COMMIT_Synclist, /* metadata pages on group commit synclist */
};
/* * commit_mutex nesting subclasses:
*/ enum commit_mutex_class
{
COMMIT_MUTEX_PARENT,
COMMIT_MUTEX_CHILD,
COMMIT_MUTEX_SECOND_PARENT, /* Renaming */
COMMIT_MUTEX_VICTIM /* Inode being unlinked due to rename */
};
/* * rdwrlock subclasses: * The dmap inode may be locked while a normal inode or the imap inode are * locked.
*/ enum rdwrlock_class
{
RDWRLOCK_NORMAL,
RDWRLOCK_IMAP,
RDWRLOCK_DMAP
};
#define set_cflag(flag, ip) set_bit(flag, &(JFS_IP(ip)->cflag)) #define clear_cflag(flag, ip) clear_bit(flag, &(JFS_IP(ip)->cflag)) #define test_cflag(flag, ip) test_bit(flag, &(JFS_IP(ip)->cflag)) #define test_and_clear_cflag(flag, ip) \
test_and_clear_bit(flag, &(JFS_IP(ip)->cflag)) /* * JFS-private superblock information.
*/ struct jfs_sb_info { struct super_block *sb; /* Point back to vfs super block */ unsignedlong mntflag; /* aggregate attributes */ struct inode *ipbmap; /* block map inode */ struct inode *ipaimap; /* aggregate inode map inode */ struct inode *ipaimap2; /* secondary aimap inode */ struct inode *ipimap; /* aggregate inode map inode */ struct jfs_log *log; /* log */ struct list_head log_list; /* volumes associated with a journal */ short bsize; /* logical block size */ short l2bsize; /* log2 logical block size */ short nbperpage; /* blocks per page */ short l2nbperpage; /* log2 blocks per page */ short l2niperblk; /* log2 inodes per page */
dev_t logdev; /* external log device */
uint aggregate; /* volume identifier in log record */
pxd_t logpxd; /* pxd describing log */
pxd_t fsckpxd; /* pxd describing fsck wkspc */
pxd_t ait2; /* pxd describing AIT copy */
uuid_t uuid; /* 128-bit uuid for volume */
uuid_t loguuid; /* 128-bit uuid for log */ /* * commit_state is used for synchronization of the jfs_commit * threads. It is protected by LAZY_LOCK().
*/ int commit_state; /* commit state */ /* Formerly in ipimap */
uint gengen; /* inode generation generator*/
uint inostamp; /* shows inode belongs to fileset*/
/* Formerly in ipbmap */ struct bmap *bmap; /* incore bmap descriptor */ struct nls_table *nls_tab; /* current codepage */ struct inode *direct_inode; /* metadata inode */
uint state; /* mount/recovery state */ unsignedlong flag; /* mount time flags */
uint p_state; /* state prior to going no integrity */
kuid_t uid; /* uid to override on-disk uid */
kgid_t gid; /* gid to override on-disk gid */
uint umask; /* umask to override on-disk umask */
uint minblks_trim; /* minimum blocks, for online trim */
};
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