#include <linux/bit_spinlock.h>
#include <linux/mutex.h>
#include <linux/timer.h>
-
-#include <asm/semaphore.h>
#endif
#define journal_oom_retry 1
__be32 h_sequence;
} journal_header_t;
+/*
+ * Checksum types.
+ */
+#define JBD2_CRC32_CHKSUM 1
+#define JBD2_MD5_CHKSUM 2
+#define JBD2_SHA1_CHKSUM 3
+
+#define JBD2_CRC32_CHKSUM_SIZE 4
+
+#define JBD2_CHECKSUM_BYTES (32 / sizeof(u32))
+/*
+ * Commit block header for storing transactional checksums:
+ */
+struct commit_header {
+ __be32 h_magic;
+ __be32 h_blocktype;
+ __be32 h_sequence;
+ unsigned char h_chksum_type;
+ unsigned char h_chksum_size;
+ unsigned char h_padding[2];
+ __be32 h_chksum[JBD2_CHECKSUM_BYTES];
+ __be64 h_commit_sec;
+ __be32 h_commit_nsec;
+};
/*
* The block tag: used to describe a single buffer in the journal.
((j)->j_format_version >= 2 && \
((j)->j_superblock->s_feature_incompat & cpu_to_be32((mask))))
-#define JBD2_FEATURE_INCOMPAT_REVOKE 0x00000001
-#define JBD2_FEATURE_INCOMPAT_64BIT 0x00000002
+#define JBD2_FEATURE_COMPAT_CHECKSUM 0x00000001
+
+#define JBD2_FEATURE_INCOMPAT_REVOKE 0x00000001
+#define JBD2_FEATURE_INCOMPAT_64BIT 0x00000002
+#define JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT 0x00000004
/* Features known to this kernel version: */
-#define JBD2_KNOWN_COMPAT_FEATURES 0
+#define JBD2_KNOWN_COMPAT_FEATURES JBD2_FEATURE_COMPAT_CHECKSUM
#define JBD2_KNOWN_ROCOMPAT_FEATURES 0
#define JBD2_KNOWN_INCOMPAT_FEATURES (JBD2_FEATURE_INCOMPAT_REVOKE | \
- JBD2_FEATURE_INCOMPAT_64BIT)
+ JBD2_FEATURE_INCOMPAT_64BIT | \
+ JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)
#ifdef __KERNEL__
bit_spin_unlock(BH_JournalHead, &bh->b_state);
}
+/* Flags in jbd_inode->i_flags */
+#define __JI_COMMIT_RUNNING 0
+/* Commit of the inode data in progress. We use this flag to protect us from
+ * concurrent deletion of inode. We cannot use reference to inode for this
+ * since we cannot afford doing last iput() on behalf of kjournald
+ */
+#define JI_COMMIT_RUNNING (1 << __JI_COMMIT_RUNNING)
+
+/**
+ * struct jbd_inode is the structure linking inodes in ordered mode
+ * present in a transaction so that we can sync them during commit.
+ */
+struct jbd2_inode {
+ /* Which transaction does this inode belong to? Either the running
+ * transaction or the committing one. [j_list_lock] */
+ transaction_t *i_transaction;
+
+ /* Pointer to the running transaction modifying inode's data in case
+ * there is already a committing transaction touching it. [j_list_lock] */
+ transaction_t *i_next_transaction;
+
+ /* List of inodes in the i_transaction [j_list_lock] */
+ struct list_head i_list;
+
+ /* VFS inode this inode belongs to [constant during the lifetime
+ * of the structure] */
+ struct inode *i_vfs_inode;
+
+ /* Flags of inode [j_list_lock] */
+ unsigned int i_flags;
+};
+
struct jbd2_revoke_table_s;
/**
unsigned int h_sync: 1; /* sync-on-close */
unsigned int h_jdata: 1; /* force data journaling */
unsigned int h_aborted: 1; /* fatal error on handle */
+
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+ struct lockdep_map h_lockdep_map;
+#endif
};
struct journal_head *t_reserved_list;
/*
- * Doubly-linked circular list of all buffers under writeout during
- * commit [j_list_lock]
- */
- struct journal_head *t_locked_list;
-
- /*
* Doubly-linked circular list of all metadata buffers owned by this
* transaction [j_list_lock]
*/
struct journal_head *t_buffers;
/*
- * Doubly-linked circular list of all data buffers still to be
- * flushed before this transaction can be committed [j_list_lock]
- */
- struct journal_head *t_sync_datalist;
-
- /*
* Doubly-linked circular list of all forget buffers (superseded
* buffers which we can un-checkpoint once this transaction commits)
* [j_list_lock]
struct journal_head *t_log_list;
/*
+ * List of inodes whose data we've modified in data=ordered mode.
+ * [j_list_lock]
+ */
+ struct list_head t_inode_list;
+
+ /*
* Protects info related to handles
*/
spinlock_t t_handle_lock;
struct proc_dir_entry *j_proc_entry;
struct transaction_stats_s j_stats;
+ /* Failed journal commit ID */
+ unsigned int j_failed_commit;
+
/*
* An opaque pointer to fs-private information. ext3 puts its
* superblock pointer here
extern int jbd2_journal_get_write_access(handle_t *, struct buffer_head *);
extern int jbd2_journal_get_create_access (handle_t *, struct buffer_head *);
extern int jbd2_journal_get_undo_access(handle_t *, struct buffer_head *);
-extern int jbd2_journal_dirty_data (handle_t *, struct buffer_head *);
extern int jbd2_journal_dirty_metadata (handle_t *, struct buffer_head *);
extern void jbd2_journal_release_buffer (handle_t *, struct buffer_head *);
extern int jbd2_journal_forget (handle_t *, struct buffer_head *);
(journal_t *, unsigned long, unsigned long, unsigned long);
extern int jbd2_journal_set_features
(journal_t *, unsigned long, unsigned long, unsigned long);
+extern void jbd2_journal_clear_features
+ (journal_t *, unsigned long, unsigned long, unsigned long);
extern int jbd2_journal_create (journal_t *);
extern int jbd2_journal_load (journal_t *journal);
extern void jbd2_journal_destroy (journal_t *);
extern int jbd2_journal_clear_err (journal_t *);
extern int jbd2_journal_bmap(journal_t *, unsigned long, unsigned long long *);
extern int jbd2_journal_force_commit(journal_t *);
+extern int jbd2_journal_file_inode(handle_t *handle, struct jbd2_inode *inode);
+extern int jbd2_journal_begin_ordered_truncate(struct jbd2_inode *inode, loff_t new_size);
+extern void jbd2_journal_init_jbd_inode(struct jbd2_inode *jinode, struct inode *inode);
+extern void jbd2_journal_release_jbd_inode(journal_t *journal, struct jbd2_inode *jinode);
/*
* journal_head management
/* journaling buffer types */
#define BJ_None 0 /* Not journaled */
-#define BJ_SyncData 1 /* Normal data: flush before commit */
-#define BJ_Metadata 2 /* Normal journaled metadata */
-#define BJ_Forget 3 /* Buffer superseded by this transaction */
-#define BJ_IO 4 /* Buffer is for temporary IO use */
-#define BJ_Shadow 5 /* Buffer contents being shadowed to the log */
-#define BJ_LogCtl 6 /* Buffer contains log descriptors */
-#define BJ_Reserved 7 /* Buffer is reserved for access by journal */
-#define BJ_Locked 8 /* Locked for I/O during commit */
-#define BJ_Types 9
+#define BJ_Metadata 1 /* Normal journaled metadata */
+#define BJ_Forget 2 /* Buffer superseded by this transaction */
+#define BJ_IO 3 /* Buffer is for temporary IO use */
+#define BJ_Shadow 4 /* Buffer contents being shadowed to the log */
+#define BJ_LogCtl 5 /* Buffer contains log descriptors */
+#define BJ_Reserved 6 /* Buffer is reserved for access by journal */
+#define BJ_Types 7
extern int jbd_blocks_per_page(struct inode *inode);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff