---

yaml
---
r: 137614
b: refs/heads/master
c: fec1878
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: da9c138e9e1cc08aa3a4e8c09411a5d08f866445
+refs/heads/master: fec1878fe952b994125a3be7c94b1322db586f3b

trunk/fs/jfs/jfs_extent.c

@@ -362,11 +362,12 @@ int extRealloc(struct inode *ip, s64 nxlen, xad_t * xp, bool abnr)
 int extHint(struct inode *ip, s64 offset, xad_t * xp)
 {
 	struct super_block *sb = ip->i_sb;
-	struct xadlist xadl;
-	struct lxdlist lxdl;
-	lxd_t lxd;
+	int nbperpage = JFS_SBI(sb)->nbperpage;
 	s64 prev;
-	int rc, nbperpage = JFS_SBI(sb)->nbperpage;
+	int rc = 0;
+	s64 xaddr;
+	int xlen;
+	int xflag;
 
 	/* init the hint as "no hint provided" */
 	XADaddress(xp, 0);
@@ -376,46 +377,30 @@ int extHint(struct inode *ip, s64 offset, xad_t * xp)
 	 */
 	prev = ((offset & ~POFFSET) >> JFS_SBI(sb)->l2bsize) - nbperpage;
 
-	/* if the offsets in the first page of the file,
-	 * no hint provided.
+	/* if the offset is in the first page of the file, no hint provided.
 	 */
 	if (prev < 0)
-		return (0);
-
-	/* prepare to lookup the previous page's extent info */
-	lxdl.maxnlxd = 1;
-	lxdl.nlxd = 1;
-	lxdl.lxd = &lxd;
-	LXDoffset(&lxd, prev)
-	LXDlength(&lxd, nbperpage);
-
-	xadl.maxnxad = 1;
-	xadl.nxad = 0;
-	xadl.xad = xp;
-
-	/* perform the lookup */
-	if ((rc = xtLookupList(ip, &lxdl, &xadl, 0)))
-		return (rc);
-
-	/* check if no extent exists for the previous page.
-	 * this is possible for sparse files.
-	 */
-	if (xadl.nxad == 0) {
-//		assert(ISSPARSE(ip));
-		return (0);
-	}
+		goto out;
 
-	/* only preserve the abnr flag within the xad flags
-	 * of the returned hint.
-	 */
-	xp->flag &= XAD_NOTRECORDED;
+	rc = xtLookup(ip, prev, nbperpage, &xflag, &xaddr, &xlen, 0);
 
-	if(xadl.nxad != 1 || lengthXAD(xp) != nbperpage) {
-		jfs_error(ip->i_sb, "extHint: corrupt xtree");
-		return -EIO;
-	}
+	if ((rc == 0) && xlen) {
+		if (xlen != nbperpage) {
+			jfs_error(ip->i_sb, "extHint: corrupt xtree");
+			rc = -EIO;
+		}
+		XADaddress(xp, xaddr);
+		XADlength(xp, xlen);
+		/*
+		 * only preserve the abnr flag within the xad flags
+		 * of the returned hint.
+		 */
+		xp->flag  = xflag & XAD_NOTRECORDED;
+	} else
+		rc = 0;
 
-	return (0);
+out:
+	return (rc);
 }
 
 

trunk/fs/jfs/jfs_types.h

@@ -57,35 +57,6 @@ struct timestruc_t {
 #define	HIGHORDER	0x80000000u	/* high order bit on	*/
 #define	ONES		0xffffffffu	/* all bit on		*/
 
-/*
- *	logical xd (lxd)
- */
-typedef struct {
-	unsigned len:24;
-	unsigned off1:8;
-	u32 off2;
-} lxd_t;
-
-/* lxd_t field construction */
-#define	LXDlength(lxd, length32)	( (lxd)->len = length32 )
-#define	LXDoffset(lxd, offset64)\
-{\
-	(lxd)->off1 = ((s64)offset64) >> 32;\
-	(lxd)->off2 = (offset64) & 0xffffffff;\
-}
-
-/* lxd_t field extraction */
-#define	lengthLXD(lxd)	( (lxd)->len )
-#define	offsetLXD(lxd)\
-	( ((s64)((lxd)->off1)) << 32 | (lxd)->off2 )
-
-/* lxd list */
-struct lxdlist {
-	s16 maxnlxd;
-	s16 nlxd;
-	lxd_t *lxd;
-};
-
 /*
  *	physical xd (pxd)
  */