[09/30] xfs: make inode IO completion buffer centric
diff mbox series

Message ID 20200601214251.4167140-10-david@fromorbit.com
State Superseded
Headers show
Series
  • xfs: rework inode flushing to make inode reclaim fully asynchronous
Related show

Commit Message

Dave Chinner June 1, 2020, 9:42 p.m. UTC
From: Dave Chinner <dchinner@redhat.com>

Having different io completion callbacks for different inode states
makes things complex. We can detect if the inode is stale via the
XFS_ISTALE flag in IO completion, so we don't need a special
callback just for this.

This means inodes only have a single iodone callback, and inode IO
completion is entirely buffer centric at this point. Hence we no
longer need to use a log item callback at all as we can just call
xfs_iflush_done() directly from the buffer completions and walk the
buffer log item list to complete the all inodes under IO.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/xfs_buf_item.c   | 35 ++++++++++++++++++----
 fs/xfs/xfs_inode.c      |  6 ++--
 fs/xfs/xfs_inode_item.c | 65 ++++++++++++++---------------------------
 fs/xfs/xfs_inode_item.h |  5 ++--
 4 files changed, 56 insertions(+), 55 deletions(-)

Comments

Brian Foster June 3, 2020, 2:58 p.m. UTC | #1
On Tue, Jun 02, 2020 at 07:42:30AM +1000, Dave Chinner wrote:
> From: Dave Chinner <dchinner@redhat.com>
> 
> Having different io completion callbacks for different inode states
> makes things complex. We can detect if the inode is stale via the
> XFS_ISTALE flag in IO completion, so we don't need a special
> callback just for this.
> 
> This means inodes only have a single iodone callback, and inode IO
> completion is entirely buffer centric at this point. Hence we no
> longer need to use a log item callback at all as we can just call
> xfs_iflush_done() directly from the buffer completions and walk the
> buffer log item list to complete the all inodes under IO.
> 
> Signed-off-by: Dave Chinner <dchinner@redhat.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
> ---

Probably not worth changing now, but I think this would have been
cleaner if the elimination of xfs_istale_done() was factored into a
separate patch. Otherwise LGTM:

Reviewed-by: Brian Foster <bfoster@redhat.com>

>  fs/xfs/xfs_buf_item.c   | 35 ++++++++++++++++++----
>  fs/xfs/xfs_inode.c      |  6 ++--
>  fs/xfs/xfs_inode_item.c | 65 ++++++++++++++---------------------------
>  fs/xfs/xfs_inode_item.h |  5 ++--
>  4 files changed, 56 insertions(+), 55 deletions(-)
> 
> diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
> index 5b3cd5e90947c..a4e416af5c614 100644
> --- a/fs/xfs/xfs_buf_item.c
> +++ b/fs/xfs/xfs_buf_item.c
> @@ -13,6 +13,8 @@
>  #include "xfs_mount.h"
>  #include "xfs_trans.h"
>  #include "xfs_buf_item.h"
> +#include "xfs_inode.h"
> +#include "xfs_inode_item.h"
>  #include "xfs_trans_priv.h"
>  #include "xfs_trace.h"
>  #include "xfs_log.h"
> @@ -457,7 +459,8 @@ xfs_buf_item_unpin(
>  		 * the AIL lock.
>  		 */
>  		if (bip->bli_flags & XFS_BLI_STALE_INODE) {
> -			xfs_buf_do_callbacks(bp);
> +			lip->li_cb(bp, lip);
> +			xfs_iflush_done(bp);
>  			bp->b_log_item = NULL;
>  		} else {
>  			xfs_trans_ail_delete(lip, SHUTDOWN_LOG_IO_ERROR);
> @@ -1141,8 +1144,8 @@ xfs_buf_iodone_callback_error(
>  	return false;
>  }
>  
> -static void
> -xfs_buf_run_callbacks(
> +static inline bool
> +xfs_buf_had_callback_errors(
>  	struct xfs_buf		*bp)
>  {
>  
> @@ -1152,7 +1155,7 @@ xfs_buf_run_callbacks(
>  	 * appropriate action.
>  	 */
>  	if (bp->b_error && xfs_buf_iodone_callback_error(bp))
> -		return;
> +		return true;
>  
>  	/*
>  	 * Successful IO or permanent error. Either way, we can clear the
> @@ -1161,7 +1164,16 @@ xfs_buf_run_callbacks(
>  	bp->b_last_error = 0;
>  	bp->b_retries = 0;
>  	bp->b_first_retry_time = 0;
> +	return false;
> +}
>  
> +static void
> +xfs_buf_run_callbacks(
> +	struct xfs_buf		*bp)
> +{
> +
> +	if (xfs_buf_had_callback_errors(bp))
> +		return;
>  	xfs_buf_do_callbacks(bp);
>  	bp->b_log_item = NULL;
>  }
> @@ -1173,7 +1185,20 @@ void
>  xfs_buf_inode_iodone(
>  	struct xfs_buf		*bp)
>  {
> -	xfs_buf_run_callbacks(bp);
> +	struct xfs_buf_log_item *blip = bp->b_log_item;
> +	struct xfs_log_item	*lip;
> +
> +	if (xfs_buf_had_callback_errors(bp))
> +		return;
> +
> +	/* If there is a buf_log_item attached, run its callback */
> +	if (blip) {
> +		lip = &blip->bli_item;
> +		lip->li_cb(bp, lip);
> +		bp->b_log_item = NULL;
> +	}
> +
> +	xfs_iflush_done(bp);
>  	xfs_buf_ioend_finish(bp);
>  }
>  
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index d5dee57f914a9..1b4e8e0bb0cf0 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -2677,7 +2677,6 @@ xfs_ifree_cluster(
>  		list_for_each_entry(lip, &bp->b_li_list, li_bio_list) {
>  			if (lip->li_type == XFS_LI_INODE) {
>  				iip = (struct xfs_inode_log_item *)lip;
> -				lip->li_cb = xfs_istale_done;
>  				xfs_trans_ail_copy_lsn(mp->m_ail,
>  							&iip->ili_flush_lsn,
>  							&iip->ili_item.li_lsn);
> @@ -2710,8 +2709,7 @@ xfs_ifree_cluster(
>  			xfs_trans_ail_copy_lsn(mp->m_ail, &iip->ili_flush_lsn,
>  						&iip->ili_item.li_lsn);
>  
> -			xfs_buf_attach_iodone(bp, xfs_istale_done,
> -						  &iip->ili_item);
> +			xfs_buf_attach_iodone(bp, NULL, &iip->ili_item);
>  
>  			if (ip != free_ip)
>  				xfs_iunlock(ip, XFS_ILOCK_EXCL);
> @@ -3861,7 +3859,7 @@ xfs_iflush_int(
>  	 * the flush lock.
>  	 */
>  	bp->b_flags |= _XBF_INODES;
> -	xfs_buf_attach_iodone(bp, xfs_iflush_done, &iip->ili_item);
> +	xfs_buf_attach_iodone(bp, NULL, &iip->ili_item);
>  
>  	/* generate the checksum. */
>  	xfs_dinode_calc_crc(mp, dip);
> diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
> index 6ef9cbcfc94a7..7049f2ae8d186 100644
> --- a/fs/xfs/xfs_inode_item.c
> +++ b/fs/xfs/xfs_inode_item.c
> @@ -668,40 +668,34 @@ xfs_inode_item_destroy(
>   */
>  void
>  xfs_iflush_done(
> -	struct xfs_buf		*bp,
> -	struct xfs_log_item	*lip)
> +	struct xfs_buf		*bp)
>  {
>  	struct xfs_inode_log_item *iip;
> -	struct xfs_log_item	*blip, *n;
> -	struct xfs_ail		*ailp = lip->li_ailp;
> +	struct xfs_log_item	*lip, *n;
> +	struct xfs_ail		*ailp = bp->b_mount->m_ail;
>  	int			need_ail = 0;
>  	LIST_HEAD(tmp);
>  
>  	/*
> -	 * Scan the buffer IO completions for other inodes being completed and
> -	 * attach them to the current inode log item.
> +	 * Pull the attached inodes from the buffer one at a time and take the
> +	 * appropriate action on them.
>  	 */
> -
> -	list_add_tail(&lip->li_bio_list, &tmp);
> -
> -	list_for_each_entry_safe(blip, n, &bp->b_li_list, li_bio_list) {
> -		if (lip->li_cb != xfs_iflush_done)
> +	list_for_each_entry_safe(lip, n, &bp->b_li_list, li_bio_list) {
> +		iip = INODE_ITEM(lip);
> +		if (xfs_iflags_test(iip->ili_inode, XFS_ISTALE)) {
> +			list_del_init(&lip->li_bio_list);
> +			xfs_iflush_abort(iip->ili_inode);
>  			continue;
> +		}
>  
> -		list_move_tail(&blip->li_bio_list, &tmp);
> +		list_move_tail(&lip->li_bio_list, &tmp);
>  
>  		/* Do an unlocked check for needing the AIL lock. */
> -		iip = INODE_ITEM(blip);
> -		if (blip->li_lsn == iip->ili_flush_lsn ||
> -		    test_bit(XFS_LI_FAILED, &blip->li_flags))
> +		if (lip->li_lsn == iip->ili_flush_lsn ||
> +		    test_bit(XFS_LI_FAILED, &lip->li_flags))
>  			need_ail++;
>  	}
> -
> -	/* make sure we capture the state of the initial inode. */
> -	iip = INODE_ITEM(lip);
> -	if (lip->li_lsn == iip->ili_flush_lsn ||
> -	    test_bit(XFS_LI_FAILED, &lip->li_flags))
> -		need_ail++;
> +	ASSERT(list_empty(&bp->b_li_list));
>  
>  	/*
>  	 * We only want to pull the item from the AIL if it is actually there
> @@ -713,19 +707,13 @@ xfs_iflush_done(
>  
>  		/* this is an opencoded batch version of xfs_trans_ail_delete */
>  		spin_lock(&ailp->ail_lock);
> -		list_for_each_entry(blip, &tmp, li_bio_list) {
> -			if (blip->li_lsn == INODE_ITEM(blip)->ili_flush_lsn) {
> -				/*
> -				 * xfs_ail_update_finish() only cares about the
> -				 * lsn of the first tail item removed, any
> -				 * others will be at the same or higher lsn so
> -				 * we just ignore them.
> -				 */
> -				xfs_lsn_t lsn = xfs_ail_delete_one(ailp, blip);
> +		list_for_each_entry(lip, &tmp, li_bio_list) {
> +			if (lip->li_lsn == INODE_ITEM(lip)->ili_flush_lsn) {
> +				xfs_lsn_t lsn = xfs_ail_delete_one(ailp, lip);
>  				if (!tail_lsn && lsn)
>  					tail_lsn = lsn;
>  			} else {
> -				xfs_clear_li_failed(blip);
> +				xfs_clear_li_failed(lip);
>  			}
>  		}
>  		xfs_ail_update_finish(ailp, tail_lsn);
> @@ -736,9 +724,9 @@ xfs_iflush_done(
>  	 * ili_last_fields bits now that we know that the data corresponding to
>  	 * them is safely on disk.
>  	 */
> -	list_for_each_entry_safe(blip, n, &tmp, li_bio_list) {
> -		list_del_init(&blip->li_bio_list);
> -		iip = INODE_ITEM(blip);
> +	list_for_each_entry_safe(lip, n, &tmp, li_bio_list) {
> +		list_del_init(&lip->li_bio_list);
> +		iip = INODE_ITEM(lip);
>  
>  		spin_lock(&iip->ili_lock);
>  		iip->ili_last_fields = 0;
> @@ -746,7 +734,6 @@ xfs_iflush_done(
>  
>  		xfs_ifunlock(iip->ili_inode);
>  	}
> -	list_del(&tmp);
>  }
>  
>  /*
> @@ -779,14 +766,6 @@ xfs_iflush_abort(
>  	xfs_ifunlock(ip);
>  }
>  
> -void
> -xfs_istale_done(
> -	struct xfs_buf		*bp,
> -	struct xfs_log_item	*lip)
> -{
> -	xfs_iflush_abort(INODE_ITEM(lip)->ili_inode);
> -}
> -
>  /*
>   * convert an xfs_inode_log_format struct from the old 32 bit version
>   * (which can have different field alignments) to the native 64 bit version
> diff --git a/fs/xfs/xfs_inode_item.h b/fs/xfs/xfs_inode_item.h
> index 44c47c08b0b59..1545fccad4eeb 100644
> --- a/fs/xfs/xfs_inode_item.h
> +++ b/fs/xfs/xfs_inode_item.h
> @@ -36,15 +36,14 @@ struct xfs_inode_log_item {
>  	xfs_lsn_t		ili_last_lsn;	   /* lsn at last transaction */
>  };
>  
> -static inline int xfs_inode_clean(xfs_inode_t *ip)
> +static inline int xfs_inode_clean(struct xfs_inode *ip)
>  {
>  	return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
>  }
>  
>  extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
>  extern void xfs_inode_item_destroy(struct xfs_inode *);
> -extern void xfs_iflush_done(struct xfs_buf *, struct xfs_log_item *);
> -extern void xfs_istale_done(struct xfs_buf *, struct xfs_log_item *);
> +extern void xfs_iflush_done(struct xfs_buf *);
>  extern void xfs_iflush_abort(struct xfs_inode *);
>  extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
>  					 struct xfs_inode_log_format *);
> -- 
> 2.26.2.761.g0e0b3e54be
>

Patch
diff mbox series

diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index 5b3cd5e90947c..a4e416af5c614 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -13,6 +13,8 @@ 
 #include "xfs_mount.h"
 #include "xfs_trans.h"
 #include "xfs_buf_item.h"
+#include "xfs_inode.h"
+#include "xfs_inode_item.h"
 #include "xfs_trans_priv.h"
 #include "xfs_trace.h"
 #include "xfs_log.h"
@@ -457,7 +459,8 @@  xfs_buf_item_unpin(
 		 * the AIL lock.
 		 */
 		if (bip->bli_flags & XFS_BLI_STALE_INODE) {
-			xfs_buf_do_callbacks(bp);
+			lip->li_cb(bp, lip);
+			xfs_iflush_done(bp);
 			bp->b_log_item = NULL;
 		} else {
 			xfs_trans_ail_delete(lip, SHUTDOWN_LOG_IO_ERROR);
@@ -1141,8 +1144,8 @@  xfs_buf_iodone_callback_error(
 	return false;
 }
 
-static void
-xfs_buf_run_callbacks(
+static inline bool
+xfs_buf_had_callback_errors(
 	struct xfs_buf		*bp)
 {
 
@@ -1152,7 +1155,7 @@  xfs_buf_run_callbacks(
 	 * appropriate action.
 	 */
 	if (bp->b_error && xfs_buf_iodone_callback_error(bp))
-		return;
+		return true;
 
 	/*
 	 * Successful IO or permanent error. Either way, we can clear the
@@ -1161,7 +1164,16 @@  xfs_buf_run_callbacks(
 	bp->b_last_error = 0;
 	bp->b_retries = 0;
 	bp->b_first_retry_time = 0;
+	return false;
+}
 
+static void
+xfs_buf_run_callbacks(
+	struct xfs_buf		*bp)
+{
+
+	if (xfs_buf_had_callback_errors(bp))
+		return;
 	xfs_buf_do_callbacks(bp);
 	bp->b_log_item = NULL;
 }
@@ -1173,7 +1185,20 @@  void
 xfs_buf_inode_iodone(
 	struct xfs_buf		*bp)
 {
-	xfs_buf_run_callbacks(bp);
+	struct xfs_buf_log_item *blip = bp->b_log_item;
+	struct xfs_log_item	*lip;
+
+	if (xfs_buf_had_callback_errors(bp))
+		return;
+
+	/* If there is a buf_log_item attached, run its callback */
+	if (blip) {
+		lip = &blip->bli_item;
+		lip->li_cb(bp, lip);
+		bp->b_log_item = NULL;
+	}
+
+	xfs_iflush_done(bp);
 	xfs_buf_ioend_finish(bp);
 }
 
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index d5dee57f914a9..1b4e8e0bb0cf0 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2677,7 +2677,6 @@  xfs_ifree_cluster(
 		list_for_each_entry(lip, &bp->b_li_list, li_bio_list) {
 			if (lip->li_type == XFS_LI_INODE) {
 				iip = (struct xfs_inode_log_item *)lip;
-				lip->li_cb = xfs_istale_done;
 				xfs_trans_ail_copy_lsn(mp->m_ail,
 							&iip->ili_flush_lsn,
 							&iip->ili_item.li_lsn);
@@ -2710,8 +2709,7 @@  xfs_ifree_cluster(
 			xfs_trans_ail_copy_lsn(mp->m_ail, &iip->ili_flush_lsn,
 						&iip->ili_item.li_lsn);
 
-			xfs_buf_attach_iodone(bp, xfs_istale_done,
-						  &iip->ili_item);
+			xfs_buf_attach_iodone(bp, NULL, &iip->ili_item);
 
 			if (ip != free_ip)
 				xfs_iunlock(ip, XFS_ILOCK_EXCL);
@@ -3861,7 +3859,7 @@  xfs_iflush_int(
 	 * the flush lock.
 	 */
 	bp->b_flags |= _XBF_INODES;
-	xfs_buf_attach_iodone(bp, xfs_iflush_done, &iip->ili_item);
+	xfs_buf_attach_iodone(bp, NULL, &iip->ili_item);
 
 	/* generate the checksum. */
 	xfs_dinode_calc_crc(mp, dip);
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 6ef9cbcfc94a7..7049f2ae8d186 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -668,40 +668,34 @@  xfs_inode_item_destroy(
  */
 void
 xfs_iflush_done(
-	struct xfs_buf		*bp,
-	struct xfs_log_item	*lip)
+	struct xfs_buf		*bp)
 {
 	struct xfs_inode_log_item *iip;
-	struct xfs_log_item	*blip, *n;
-	struct xfs_ail		*ailp = lip->li_ailp;
+	struct xfs_log_item	*lip, *n;
+	struct xfs_ail		*ailp = bp->b_mount->m_ail;
 	int			need_ail = 0;
 	LIST_HEAD(tmp);
 
 	/*
-	 * Scan the buffer IO completions for other inodes being completed and
-	 * attach them to the current inode log item.
+	 * Pull the attached inodes from the buffer one at a time and take the
+	 * appropriate action on them.
 	 */
-
-	list_add_tail(&lip->li_bio_list, &tmp);
-
-	list_for_each_entry_safe(blip, n, &bp->b_li_list, li_bio_list) {
-		if (lip->li_cb != xfs_iflush_done)
+	list_for_each_entry_safe(lip, n, &bp->b_li_list, li_bio_list) {
+		iip = INODE_ITEM(lip);
+		if (xfs_iflags_test(iip->ili_inode, XFS_ISTALE)) {
+			list_del_init(&lip->li_bio_list);
+			xfs_iflush_abort(iip->ili_inode);
 			continue;
+		}
 
-		list_move_tail(&blip->li_bio_list, &tmp);
+		list_move_tail(&lip->li_bio_list, &tmp);
 
 		/* Do an unlocked check for needing the AIL lock. */
-		iip = INODE_ITEM(blip);
-		if (blip->li_lsn == iip->ili_flush_lsn ||
-		    test_bit(XFS_LI_FAILED, &blip->li_flags))
+		if (lip->li_lsn == iip->ili_flush_lsn ||
+		    test_bit(XFS_LI_FAILED, &lip->li_flags))
 			need_ail++;
 	}
-
-	/* make sure we capture the state of the initial inode. */
-	iip = INODE_ITEM(lip);
-	if (lip->li_lsn == iip->ili_flush_lsn ||
-	    test_bit(XFS_LI_FAILED, &lip->li_flags))
-		need_ail++;
+	ASSERT(list_empty(&bp->b_li_list));
 
 	/*
 	 * We only want to pull the item from the AIL if it is actually there
@@ -713,19 +707,13 @@  xfs_iflush_done(
 
 		/* this is an opencoded batch version of xfs_trans_ail_delete */
 		spin_lock(&ailp->ail_lock);
-		list_for_each_entry(blip, &tmp, li_bio_list) {
-			if (blip->li_lsn == INODE_ITEM(blip)->ili_flush_lsn) {
-				/*
-				 * xfs_ail_update_finish() only cares about the
-				 * lsn of the first tail item removed, any
-				 * others will be at the same or higher lsn so
-				 * we just ignore them.
-				 */
-				xfs_lsn_t lsn = xfs_ail_delete_one(ailp, blip);
+		list_for_each_entry(lip, &tmp, li_bio_list) {
+			if (lip->li_lsn == INODE_ITEM(lip)->ili_flush_lsn) {
+				xfs_lsn_t lsn = xfs_ail_delete_one(ailp, lip);
 				if (!tail_lsn && lsn)
 					tail_lsn = lsn;
 			} else {
-				xfs_clear_li_failed(blip);
+				xfs_clear_li_failed(lip);
 			}
 		}
 		xfs_ail_update_finish(ailp, tail_lsn);
@@ -736,9 +724,9 @@  xfs_iflush_done(
 	 * ili_last_fields bits now that we know that the data corresponding to
 	 * them is safely on disk.
 	 */
-	list_for_each_entry_safe(blip, n, &tmp, li_bio_list) {
-		list_del_init(&blip->li_bio_list);
-		iip = INODE_ITEM(blip);
+	list_for_each_entry_safe(lip, n, &tmp, li_bio_list) {
+		list_del_init(&lip->li_bio_list);
+		iip = INODE_ITEM(lip);
 
 		spin_lock(&iip->ili_lock);
 		iip->ili_last_fields = 0;
@@ -746,7 +734,6 @@  xfs_iflush_done(
 
 		xfs_ifunlock(iip->ili_inode);
 	}
-	list_del(&tmp);
 }
 
 /*
@@ -779,14 +766,6 @@  xfs_iflush_abort(
 	xfs_ifunlock(ip);
 }
 
-void
-xfs_istale_done(
-	struct xfs_buf		*bp,
-	struct xfs_log_item	*lip)
-{
-	xfs_iflush_abort(INODE_ITEM(lip)->ili_inode);
-}
-
 /*
  * convert an xfs_inode_log_format struct from the old 32 bit version
  * (which can have different field alignments) to the native 64 bit version
diff --git a/fs/xfs/xfs_inode_item.h b/fs/xfs/xfs_inode_item.h
index 44c47c08b0b59..1545fccad4eeb 100644
--- a/fs/xfs/xfs_inode_item.h
+++ b/fs/xfs/xfs_inode_item.h
@@ -36,15 +36,14 @@  struct xfs_inode_log_item {
 	xfs_lsn_t		ili_last_lsn;	   /* lsn at last transaction */
 };
 
-static inline int xfs_inode_clean(xfs_inode_t *ip)
+static inline int xfs_inode_clean(struct xfs_inode *ip)
 {
 	return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
 }
 
 extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
 extern void xfs_inode_item_destroy(struct xfs_inode *);
-extern void xfs_iflush_done(struct xfs_buf *, struct xfs_log_item *);
-extern void xfs_istale_done(struct xfs_buf *, struct xfs_log_item *);
+extern void xfs_iflush_done(struct xfs_buf *);
 extern void xfs_iflush_abort(struct xfs_inode *);
 extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
 					 struct xfs_inode_log_format *);