1 #ifndef _LINUX_JBD_STATE_H
2 #define _LINUX_JBD_STATE_H
5 BH_JBD
/* Has an attached ext3 journal_head */
7 BH_JWrite
, /* Being written to log (@@@ DEBUGGING) */
8 BH_Freed
, /* Has been freed (truncated) */
9 BH_Revoked
, /* Has been revoked from the log */
10 BH_RevokeValid
, /* Revoked flag is valid */
11 BH_JBDDirty
, /* Is dirty but journaled */
12 BH_State
, /* Pins most journal_head state */
13 BH_JournalHead
, /* Pins bh->b_private and jh->b_bh */
14 BH_Unshadow
, /* Dummy bit, for BJ_Shadow wakeup filtering */
15 BH_JBDPrivateStart
, /* First bit available for private use by FS */
19 BUFFER_FNS(JWrite
, jwrite
)
20 BUFFER_FNS(JBDDirty
, jbddirty
)
21 TAS_BUFFER_FNS(JBDDirty
, jbddirty
)
22 BUFFER_FNS(Revoked
, revoked
)
23 TAS_BUFFER_FNS(Revoked
, revoked
)
24 BUFFER_FNS(RevokeValid
, revokevalid
)
25 TAS_BUFFER_FNS(RevokeValid
, revokevalid
)
26 BUFFER_FNS(Freed
, freed
)
28 static inline struct buffer_head
*jh2bh(struct journal_head
*jh
)
33 static inline struct journal_head
*bh2jh(struct buffer_head
*bh
)
38 static inline void jbd_lock_bh_state(struct buffer_head
*bh
)
40 bit_spin_lock(BH_State
, &bh
->b_state
);
43 static inline int jbd_trylock_bh_state(struct buffer_head
*bh
)
45 return bit_spin_trylock(BH_State
, &bh
->b_state
);
48 static inline int jbd_is_locked_bh_state(struct buffer_head
*bh
)
50 return bit_spin_is_locked(BH_State
, &bh
->b_state
);
53 static inline void jbd_unlock_bh_state(struct buffer_head
*bh
)
55 bit_spin_unlock(BH_State
, &bh
->b_state
);
58 static inline void jbd_lock_bh_journal_head(struct buffer_head
*bh
)
60 bit_spin_lock(BH_JournalHead
, &bh
->b_state
);
63 static inline void jbd_unlock_bh_journal_head(struct buffer_head
*bh
)
65 bit_spin_unlock(BH_JournalHead
, &bh
->b_state
);
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