X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fxfs%2Fxfs_bmap.h;fp=fs%2Fxfs%2Fxfs_bmap.h;h=80e93409b78dbfb7122b246487cb27e60df7b7eb;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=12cc63dfc2c472edfd0831893cf58be5cb2c4107;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h
index 12cc63dfc..80e93409b 100644
--- a/fs/xfs/xfs_bmap.h
+++ b/fs/xfs/xfs_bmap.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
+ * Copyright (c) 2000-2006 Silicon Graphics, Inc.
  * All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or
@@ -20,10 +20,25 @@
 
 struct getbmap;
 struct xfs_bmbt_irec;
+struct xfs_ifork;
 struct xfs_inode;
 struct xfs_mount;
 struct xfs_trans;
 
+/*
+ * DELTA: describe a change to the in-core extent list.
+ *
+ * Internally the use of xed_blockount is somewhat funky.
+ * xed_blockcount contains an offset much of the time because this
+ * makes merging changes easier.  (xfs_fileoff_t and xfs_filblks_t are
+ * the same underlying type).
+ */
+typedef struct xfs_extdelta
+{
+	xfs_fileoff_t		xed_startoff;	/* offset of range */
+	xfs_filblks_t		xed_blockcount;	/* blocks in range */
+} xfs_extdelta_t;
+
 /*
  * List of extents to be free "later".
  * The list is kept sorted on xbf_startblock.
@@ -274,7 +289,9 @@ xfs_bmapi(
 	xfs_extlen_t		total,		/* total blocks needed */
 	struct xfs_bmbt_irec	*mval,		/* output: map values */
 	int			*nmap,		/* i/o: mval size/count */
-	xfs_bmap_free_t		*flist);	/* i/o: list extents to free */
+	xfs_bmap_free_t		*flist,		/* i/o: list extents to free */
+	xfs_extdelta_t		*delta);	/* o: change made to incore
+						   extents */
 
 /*
  * Map file blocks to filesystem blocks, simple version.
@@ -308,6 +325,8 @@ xfs_bunmapi(
 	xfs_fsblock_t		*firstblock,	/* first allocated block
 						   controls a.g. for allocs */
 	xfs_bmap_free_t		*flist,		/* i/o: list extents to free */
+	xfs_extdelta_t		*delta,		/* o: change made to incore
+						   extents */
 	int			*done);		/* set if not done yet */
 
 /*
@@ -347,9 +366,21 @@ xfs_bmap_count_blocks(
  */
 int
 xfs_check_nostate_extents(
-	xfs_bmbt_rec_t		*ep,
+	struct xfs_ifork	*ifp,
+	xfs_extnum_t		idx,
 	xfs_extnum_t		num);
 
+/*
+ * Search the extent records for the entry containing block bno.
+ * If bno lies in a hole, point to the next entry.  If bno lies
+ * past eof, *eofp will be set, and *prevp will contain the last
+ * entry (null if none).  Else, *lastxp will be set to the index
+ * of the found entry; *gotp will contain the entry.
+ */
+xfs_bmbt_rec_t *
+xfs_bmap_search_multi_extents(struct xfs_ifork *, xfs_fileoff_t, int *,
+			xfs_extnum_t *, xfs_bmbt_irec_t *, xfs_bmbt_irec_t *);
+
 #endif	/* __KERNEL__ */
 
 #endif	/* __XFS_BMAP_H__ */