summaryrefslogtreecommitdiffstats
path: root/fs/nilfs2/segbuf.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/nilfs2/segbuf.h')
-rw-r--r--fs/nilfs2/segbuf.h54
1 files changed, 18 insertions, 36 deletions
diff --git a/fs/nilfs2/segbuf.h b/fs/nilfs2/segbuf.h
index 0c3076f4e592..6af1630fb401 100644
--- a/fs/nilfs2/segbuf.h
+++ b/fs/nilfs2/segbuf.h
@@ -27,7 +27,6 @@
#include <linux/buffer_head.h>
#include <linux/bio.h>
#include <linux/completion.h>
-#include <linux/backing-dev.h>
/**
* struct nilfs_segsum_info - On-memory segment summary
@@ -77,7 +76,9 @@ struct nilfs_segsum_info {
* @sb_rest_blocks: Number of residual blocks in the current segment
* @sb_segsum_buffers: List of buffers for segment summaries
* @sb_payload_buffers: List of buffers for segment payload
- * @sb_io_error: I/O error status
+ * @sb_nbio: Number of flying bio requests
+ * @sb_err: I/O error status
+ * @sb_bio_event: Completion event of log writing
*/
struct nilfs_segment_buffer {
struct super_block *sb_super;
@@ -96,7 +97,9 @@ struct nilfs_segment_buffer {
struct list_head sb_payload_buffers; /* including super root */
/* io status */
- int sb_io_error;
+ int sb_nbio;
+ atomic_t sb_err;
+ struct completion sb_bio_event;
};
#define NILFS_LIST_SEGBUF(head) \
@@ -125,6 +128,8 @@ struct nilfs_segment_buffer *nilfs_segbuf_new(struct super_block *);
void nilfs_segbuf_free(struct nilfs_segment_buffer *);
void nilfs_segbuf_map(struct nilfs_segment_buffer *, __u64, unsigned long,
struct the_nilfs *);
+void nilfs_segbuf_map_cont(struct nilfs_segment_buffer *segbuf,
+ struct nilfs_segment_buffer *prev);
void nilfs_segbuf_set_next_segnum(struct nilfs_segment_buffer *, __u64,
struct the_nilfs *);
int nilfs_segbuf_reset(struct nilfs_segment_buffer *, unsigned, time_t);
@@ -161,41 +166,18 @@ nilfs_segbuf_add_file_buffer(struct nilfs_segment_buffer *segbuf,
segbuf->sb_sum.nfileblk++;
}
-void nilfs_release_buffers(struct list_head *);
+int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
+ struct the_nilfs *nilfs);
+int nilfs_segbuf_wait(struct nilfs_segment_buffer *segbuf);
-static inline void nilfs_segbuf_clear(struct nilfs_segment_buffer *segbuf)
+void nilfs_clear_logs(struct list_head *logs);
+void nilfs_truncate_logs(struct list_head *logs,
+ struct nilfs_segment_buffer *last);
+int nilfs_wait_on_logs(struct list_head *logs);
+
+static inline void nilfs_destroy_logs(struct list_head *logs)
{
- nilfs_release_buffers(&segbuf->sb_segsum_buffers);
- nilfs_release_buffers(&segbuf->sb_payload_buffers);
+ nilfs_truncate_logs(logs, NULL);
}
-struct nilfs_write_info {
- struct bio *bio;
- int start, end; /* The region to be submitted */
- int rest_blocks;
- int max_pages;
- int nr_vecs;
- sector_t blocknr;
-
- int nbio;
- atomic_t err;
- struct completion bio_event;
- /* completion event of segment write */
-
- /*
- * The following fields must be set explicitly
- */
- struct super_block *sb;
- struct backing_dev_info *bdi; /* backing dev info */
- struct buffer_head *bh_sr;
-};
-
-
-void nilfs_segbuf_prepare_write(struct nilfs_segment_buffer *,
- struct nilfs_write_info *);
-int nilfs_segbuf_write(struct nilfs_segment_buffer *,
- struct nilfs_write_info *);
-int nilfs_segbuf_wait(struct nilfs_segment_buffer *,
- struct nilfs_write_info *);
-
#endif /* _NILFS_SEGBUF_H */