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yaml --- r: 273164 b: refs/heads/master c: 4460667 h: refs/heads/master v: v3
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Thomas Gleixner
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Theodore Ts'o
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Oct 27, 2011
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--- | ||
refs/heads/master: 44705754610dbc63503bc7679ff9d9f84978a76f | ||
refs/heads/master: 446066724c3629664e29942a00b0aee0d6b1663a |
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#ifndef _LINUX_JBD_STATE_H | ||
#define _LINUX_JBD_STATE_H | ||
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enum jbd_state_bits { | ||
BH_JBD /* Has an attached ext3 journal_head */ | ||
= BH_PrivateStart, | ||
BH_JWrite, /* Being written to log (@@@ DEBUGGING) */ | ||
BH_Freed, /* Has been freed (truncated) */ | ||
BH_Revoked, /* Has been revoked from the log */ | ||
BH_RevokeValid, /* Revoked flag is valid */ | ||
BH_JBDDirty, /* Is dirty but journaled */ | ||
BH_State, /* Pins most journal_head state */ | ||
BH_JournalHead, /* Pins bh->b_private and jh->b_bh */ | ||
BH_Unshadow, /* Dummy bit, for BJ_Shadow wakeup filtering */ | ||
BH_JBDPrivateStart, /* First bit available for private use by FS */ | ||
}; | ||
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BUFFER_FNS(JBD, jbd) | ||
BUFFER_FNS(JWrite, jwrite) | ||
BUFFER_FNS(JBDDirty, jbddirty) | ||
TAS_BUFFER_FNS(JBDDirty, jbddirty) | ||
BUFFER_FNS(Revoked, revoked) | ||
TAS_BUFFER_FNS(Revoked, revoked) | ||
BUFFER_FNS(RevokeValid, revokevalid) | ||
TAS_BUFFER_FNS(RevokeValid, revokevalid) | ||
BUFFER_FNS(Freed, freed) | ||
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static inline struct buffer_head *jh2bh(struct journal_head *jh) | ||
{ | ||
return jh->b_bh; | ||
} | ||
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static inline struct journal_head *bh2jh(struct buffer_head *bh) | ||
{ | ||
return bh->b_private; | ||
} | ||
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static inline void jbd_lock_bh_state(struct buffer_head *bh) | ||
{ | ||
bit_spin_lock(BH_State, &bh->b_state); | ||
} | ||
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static inline int jbd_trylock_bh_state(struct buffer_head *bh) | ||
{ | ||
return bit_spin_trylock(BH_State, &bh->b_state); | ||
} | ||
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static inline int jbd_is_locked_bh_state(struct buffer_head *bh) | ||
{ | ||
return bit_spin_is_locked(BH_State, &bh->b_state); | ||
} | ||
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static inline void jbd_unlock_bh_state(struct buffer_head *bh) | ||
{ | ||
bit_spin_unlock(BH_State, &bh->b_state); | ||
} | ||
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static inline void jbd_lock_bh_journal_head(struct buffer_head *bh) | ||
{ | ||
bit_spin_lock(BH_JournalHead, &bh->b_state); | ||
} | ||
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static inline void jbd_unlock_bh_journal_head(struct buffer_head *bh) | ||
{ | ||
bit_spin_unlock(BH_JournalHead, &bh->b_state); | ||
} | ||
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#endif |