xfs: change the xfs_iext_insert / xfs_iext_remove

Change the xfs_iext_insert / xfs_iext_remove prototypes to pass more
information which will allow pushing the trace points from the callers
into those functions.  This includes folding the whichfork information
into the state variable to minimize the addition stack footprint.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

4 files changed, 38 insertions, 26 deletions

diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 6154ca0..5874098 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -592,7 +592,9 @@ xfs_bmap_add_extent(
 	if (nextents == 0) {
 		XFS_BMAP_TRACE_INSERT("insert empty", ip, 0, 1, new, NULL,
 			whichfork);
-		xfs_iext_insert(ifp, 0, 1, new);
+		xfs_iext_insert(ip, 0, 1, new,
+				whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0);
+
 		ASSERT(cur == NULL);
 		ifp->if_lastex = 0;
 		if (!isnullstartblock(new->br_startblock)) {
@@ -849,7 +851,7 @@ xfs_bmap_add_extent_delay_real(
 		XFS_BMAP_TRACE_POST_UPDATE("LF|RF|LC|RC", ip, idx - 1,
 			XFS_DATA_FORK);
 		XFS_BMAP_TRACE_DELETE("LF|RF|LC|RC", ip, idx, 2, XFS_DATA_FORK);
-		xfs_iext_remove(ifp, idx, 2);
+		xfs_iext_remove(ip, idx, 2, state);
 		ip->i_df.if_lastex = idx - 1;
 		ip->i_d.di_nextents--;
 		if (cur == NULL)
@@ -895,7 +897,7 @@ xfs_bmap_add_extent_delay_real(
 			XFS_DATA_FORK);
 		ip->i_df.if_lastex = idx - 1;
 		XFS_BMAP_TRACE_DELETE("LF|RF|LC", ip, idx, 1, XFS_DATA_FORK);
-		xfs_iext_remove(ifp, idx, 1);
+		xfs_iext_remove(ip, idx, 1, state);
 		if (cur == NULL)
 			rval = XFS_ILOG_DEXT;
 		else {
@@ -930,7 +932,7 @@ xfs_bmap_add_extent_delay_real(
 		XFS_BMAP_TRACE_POST_UPDATE("LF|RF|RC", ip, idx, XFS_DATA_FORK);
 		ip->i_df.if_lastex = idx;
 		XFS_BMAP_TRACE_DELETE("LF|RF|RC", ip, idx + 1, 1, XFS_DATA_FORK);
-		xfs_iext_remove(ifp, idx + 1, 1);
+		xfs_iext_remove(ip, idx + 1, 1, state);
 		if (cur == NULL)
 			rval = XFS_ILOG_DEXT;
 		else {
@@ -1037,7 +1039,7 @@ xfs_bmap_add_extent_delay_real(
 		xfs_bmbt_set_blockcount(ep, temp);
 		XFS_BMAP_TRACE_INSERT("LF", ip, idx, 1, new, NULL,
 			XFS_DATA_FORK);
-		xfs_iext_insert(ifp, idx, 1, new);
+		xfs_iext_insert(ip, idx, 1, new, state);
 		ip->i_df.if_lastex = idx;
 		ip->i_d.di_nextents++;
 		if (cur == NULL)
@@ -1127,7 +1129,7 @@ xfs_bmap_add_extent_delay_real(
 		xfs_bmbt_set_blockcount(ep, temp);
 		XFS_BMAP_TRACE_INSERT("RF", ip, idx + 1, 1, new, NULL,
 			XFS_DATA_FORK);
-		xfs_iext_insert(ifp, idx + 1, 1, new);
+		xfs_iext_insert(ip, idx + 1, 1, new, state);
 		ip->i_df.if_lastex = idx + 1;
 		ip->i_d.di_nextents++;
 		if (cur == NULL)
@@ -1182,7 +1184,7 @@ xfs_bmap_add_extent_delay_real(
 		r[1].br_blockcount = temp2;
 		XFS_BMAP_TRACE_INSERT("0", ip, idx + 1, 2, &r[0], &r[1],
 			XFS_DATA_FORK);
-		xfs_iext_insert(ifp, idx + 1, 2, &r[0]);
+		xfs_iext_insert(ip, idx + 1, 2, &r[0], state);
 		ip->i_df.if_lastex = idx + 1;
 		ip->i_d.di_nextents++;
 		if (cur == NULL)
@@ -1397,7 +1399,7 @@ xfs_bmap_add_extent_unwritten_real(
 		XFS_BMAP_TRACE_POST_UPDATE("LF|RF|LC|RC", ip, idx - 1,
 			XFS_DATA_FORK);
 		XFS_BMAP_TRACE_DELETE("LF|RF|LC|RC", ip, idx, 2, XFS_DATA_FORK);
-		xfs_iext_remove(ifp, idx, 2);
+		xfs_iext_remove(ip, idx, 2, state);
 		ip->i_df.if_lastex = idx - 1;
 		ip->i_d.di_nextents -= 2;
 		if (cur == NULL)
@@ -1447,7 +1449,7 @@ xfs_bmap_add_extent_unwritten_real(
 			XFS_DATA_FORK);
 		ip->i_df.if_lastex = idx - 1;
 		XFS_BMAP_TRACE_DELETE("LF|RF|LC", ip, idx, 1, XFS_DATA_FORK);
-		xfs_iext_remove(ifp, idx, 1);
+		xfs_iext_remove(ip, idx, 1, state);
 		ip->i_d.di_nextents--;
 		if (cur == NULL)
 			rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
@@ -1490,7 +1492,7 @@ xfs_bmap_add_extent_unwritten_real(
 			XFS_DATA_FORK);
 		ip->i_df.if_lastex = idx;
 		XFS_BMAP_TRACE_DELETE("LF|RF|RC", ip, idx + 1, 1, XFS_DATA_FORK);
-		xfs_iext_remove(ifp, idx + 1, 1);
+		xfs_iext_remove(ip, idx + 1, 1, state);
 		ip->i_d.di_nextents--;
 		if (cur == NULL)
 			rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
@@ -1616,7 +1618,7 @@ xfs_bmap_add_extent_unwritten_real(
 		XFS_BMAP_TRACE_POST_UPDATE("LF", ip, idx, XFS_DATA_FORK);
 		XFS_BMAP_TRACE_INSERT("LF", ip, idx, 1, new, NULL,
 			XFS_DATA_FORK);
-		xfs_iext_insert(ifp, idx, 1, new);
+		xfs_iext_insert(ip, idx, 1, new, state);
 		ip->i_df.if_lastex = idx;
 		ip->i_d.di_nextents++;
 		if (cur == NULL)
@@ -1702,7 +1704,7 @@ xfs_bmap_add_extent_unwritten_real(
 		XFS_BMAP_TRACE_POST_UPDATE("RF", ip, idx, XFS_DATA_FORK);
 		XFS_BMAP_TRACE_INSERT("RF", ip, idx + 1, 1, new, NULL,
 			XFS_DATA_FORK);
-		xfs_iext_insert(ifp, idx + 1, 1, new);
+		xfs_iext_insert(ip, idx + 1, 1, new, state);
 		ip->i_df.if_lastex = idx + 1;
 		ip->i_d.di_nextents++;
 		if (cur == NULL)
@@ -1752,7 +1754,7 @@ xfs_bmap_add_extent_unwritten_real(
 		r[1].br_state = oldext;
 		XFS_BMAP_TRACE_INSERT("0", ip, idx + 1, 2, &r[0], &r[1],
 			XFS_DATA_FORK);
-		xfs_iext_insert(ifp, idx + 1, 2, &r[0]);
+		xfs_iext_insert(ip, idx + 1, 2, &r[0], state);
 		ip->i_df.if_lastex = idx + 1;
 		ip->i_d.di_nextents += 2;
 		if (cur == NULL)
@@ -1918,7 +1920,7 @@ xfs_bmap_add_extent_hole_delay(
 		XFS_BMAP_TRACE_POST_UPDATE("LC|RC", ip, idx - 1,
 			XFS_DATA_FORK);
 		XFS_BMAP_TRACE_DELETE("LC|RC", ip, idx, 1, XFS_DATA_FORK);
-		xfs_iext_remove(ifp, idx, 1);
+		xfs_iext_remove(ip, idx, 1, state);
 		ip->i_df.if_lastex = idx - 1;
 		/* DELTA: Two in-core extents were replaced by one. */
 		temp2 = temp;
@@ -1977,7 +1979,7 @@ xfs_bmap_add_extent_hole_delay(
 		oldlen = newlen = 0;
 		XFS_BMAP_TRACE_INSERT("0", ip, idx, 1, new, NULL,
 			XFS_DATA_FORK);
-		xfs_iext_insert(ifp, idx, 1, new);
+		xfs_iext_insert(ip, idx, 1, new, state);
 		ip->i_df.if_lastex = idx;
 		/* DELTA: A new in-core extent was added in a hole. */
 		temp2 = new->br_blockcount;
@@ -2033,6 +2035,9 @@ xfs_bmap_add_extent_hole_real(
 	ep = xfs_iext_get_ext(ifp, idx);
 	state = 0;
 
+	if (whichfork == XFS_ATTR_FORK)
+		state |= BMAP_ATTRFORK;
+
 	/*
 	 * Check and set flags if this segment has a left neighbor.
 	 */
@@ -2094,7 +2099,7 @@ xfs_bmap_add_extent_hole_real(
 		XFS_BMAP_TRACE_POST_UPDATE("LC|RC", ip, idx - 1,
 			whichfork);
 		XFS_BMAP_TRACE_DELETE("LC|RC", ip, idx, 1, whichfork);
-		xfs_iext_remove(ifp, idx, 1);
+		xfs_iext_remove(ip, idx, 1, state);
 		ifp->if_lastex = idx - 1;
 		XFS_IFORK_NEXT_SET(ip, whichfork,
 			XFS_IFORK_NEXTENTS(ip, whichfork) - 1);
@@ -2205,7 +2210,7 @@ xfs_bmap_add_extent_hole_real(
 		 * Insert a new entry.
 		 */
 		XFS_BMAP_TRACE_INSERT("0", ip, idx, 1, new, NULL, whichfork);
-		xfs_iext_insert(ifp, idx, 1, new);
+		xfs_iext_insert(ip, idx, 1, new, state);
 		ifp->if_lastex = idx;
 		XFS_IFORK_NEXT_SET(ip, whichfork,
 			XFS_IFORK_NEXTENTS(ip, whichfork) + 1);
@@ -3147,7 +3152,8 @@ xfs_bmap_del_extent(
 		 * Matches the whole extent.  Delete the entry.
 		 */
 		XFS_BMAP_TRACE_DELETE("3", ip, idx, 1, whichfork);
-		xfs_iext_remove(ifp, idx, 1);
+		xfs_iext_remove(ip, idx, 1,
+				whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0);
 		ifp->if_lastex = idx;
 		if (delay)
 			break;
@@ -3317,7 +3323,8 @@ xfs_bmap_del_extent(
 		XFS_BMAP_TRACE_POST_UPDATE("0", ip, idx, whichfork);
 		XFS_BMAP_TRACE_INSERT("0", ip, idx + 1, 1, &new, NULL,
 			whichfork);
-		xfs_iext_insert(ifp, idx + 1, 1, &new);
+		xfs_iext_insert(ip, idx + 1, 1, &new,
+				whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0);
 		ifp->if_lastex = idx + 1;
 		break;
 	}
diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h
index f1ae5a1..3e84e8e 100644
--- a/fs/xfs/xfs_bmap.h
+++ b/fs/xfs/xfs_bmap.h
@@ -146,6 +146,7 @@ typedef struct xfs_bmalloca {
 #define BMAP_RIGHT_DELAY	(1 << 5)
 #define BMAP_LEFT_VALID		(1 << 6)
 #define BMAP_RIGHT_VALID	(1 << 7)
+#define BMAP_ATTRFORK		(1 << 8)
 
 #if defined(__KERNEL__) && defined(XFS_BMAP_TRACE)
 /*
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index b92a4fa..614acd5 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -3300,11 +3300,13 @@ xfs_iext_get_ext(
  */
 void
 xfs_iext_insert(
-	xfs_ifork_t	*ifp,		/* inode fork pointer */
+	xfs_inode_t	*ip,		/* incore inode pointer */
 	xfs_extnum_t	idx,		/* starting index of new items */
 	xfs_extnum_t	count,		/* number of inserted items */
-	xfs_bmbt_irec_t	*new)		/* items to insert */
+	xfs_bmbt_irec_t	*new,		/* items to insert */
+	int		state)		/* type of extent conversion */
 {
+	xfs_ifork_t	*ifp = (state & BMAP_ATTRFORK) ? ip->i_afp : &ip->i_df;
 	xfs_extnum_t	i;		/* extent record index */
 
 	ASSERT(ifp->if_flags & XFS_IFEXTENTS);
@@ -3549,10 +3551,12 @@ xfs_iext_add_indirect_multi(
  */
 void
 xfs_iext_remove(
-	xfs_ifork_t	*ifp,		/* inode fork pointer */
+	xfs_inode_t	*ip,		/* incore inode pointer */
 	xfs_extnum_t	idx,		/* index to begin removing exts */
-	int		ext_diff)	/* number of extents to remove */
+	int		ext_diff,	/* number of extents to remove */
+	int		state)		/* type of extent conversion */
 {
+	xfs_ifork_t	*ifp = (state & BMAP_ATTRFORK) ? ip->i_afp : &ip->i_df;
 	xfs_extnum_t	nextents;	/* number of extents in file */
 	int		new_size;	/* size of extents after removal */
 
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 41555de..946a8ca 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -577,11 +577,11 @@ int		xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int);
 int		xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int);
 
 xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
-void		xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t,
-				xfs_bmbt_irec_t *);
+void		xfs_iext_insert(xfs_inode_t *, xfs_extnum_t, xfs_extnum_t,
+				xfs_bmbt_irec_t *, int);
 void		xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int);
 void		xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int);
-void		xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int);
+void		xfs_iext_remove(xfs_inode_t *, xfs_extnum_t, int, int);
 void		xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
 void		xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
 void		xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);