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authorDave Chinner <dchinner@redhat.com>2010-05-14 21:41:46 +1000
committerAlex Elder <aelder@sgi.com>2010-05-24 10:33:52 -0500
commit955833cf2ad0aa39b336e853cad212d867199984 (patch)
tree301c224647dea71852e36929932321bccabd1dc4 /fs/xfs/xfs_log.h
parent169a7b078eaa765e6bd09865c985298ee9084a89 (diff)
downloadop-kernel-dev-955833cf2ad0aa39b336e853cad212d867199984.zip
op-kernel-dev-955833cf2ad0aa39b336e853cad212d867199984.tar.gz
xfs: make the log ticket ID available outside the log infrastructure
The ticket ID is needed to uniquely identify transactions when doing busy extent matching. Delayed logging changes the lifecycle of busy extents with respect to the transaction structure lifecycle. Hence we can no longer use the transaction structure as a means of determining the owner of the busy extent as it may be freed and reused while the busy extent is still active. This commit provides the infrastructure to access the xlog_tid_t held in the ticket from a transaction handle. This avoids the need for callers to peek into the transaction and log structures to find this out. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_log.h')
-rw-r--r--fs/xfs/xfs_log.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h
index 229d1f3..05f205a 100644
--- a/fs/xfs/xfs_log.h
+++ b/fs/xfs/xfs_log.h
@@ -19,7 +19,6 @@
#define __XFS_LOG_H__
/* get lsn fields */
-
#define CYCLE_LSN(lsn) ((uint)((lsn)>>32))
#define BLOCK_LSN(lsn) ((uint)(lsn))
@@ -134,6 +133,7 @@ struct xlog_in_core;
struct xlog_ticket;
struct xfs_log_item;
struct xfs_item_ops;
+struct xfs_trans;
void xfs_log_item_init(struct xfs_mount *mp,
struct xfs_log_item *item,
@@ -190,6 +190,8 @@ void xlog_iodone(struct xfs_buf *);
struct xlog_ticket * xfs_log_ticket_get(struct xlog_ticket *ticket);
void xfs_log_ticket_put(struct xlog_ticket *ticket);
+xlog_tid_t xfs_log_get_trans_ident(struct xfs_trans *tp);
+
#endif
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