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| author | Olaf Weber <olaf@sgi.com> | 2006-06-09 14:48:12 +1000 |
|---|---|---|
| committer | Nathan Scott <nathans@sgi.com> | 2006-06-09 14:48:12 +1000 |
| commit | 3e57ecf640428c01ba1ed8c8fc538447ada1715b (patch) | |
| tree | bcc92b0017b5ec8e106649cd53beffdd6addde07 /fs/xfs/xfs_bmap.h | |
| parent | 128e6ced247cda88f96fa9f2e4ba8b2c4a681560 (diff) | |
| download | linux-3e57ecf640428c01ba1ed8c8fc538447ada1715b.tar.bz2 | |
[XFS] Add parameters to xfs_bmapi() and xfs_bunmapi() to have them report
the range spanned by modifications to the in-core extent map. Add
XFS_BUNMAPI() and XFS_SWAP_EXTENTS() macros that call xfs_bunmapi() and
xfs_swap_extents() via the ioops vector. Change all calls that may modify
the in-core extent map for the data fork to go through the ioops vector.
This allows a cache of extent map data to be kept in sync.
SGI-PV: 947615
SGI-Modid: xfs-linux-melb:xfs-kern:209226a
Signed-off-by: Olaf Weber <olaf@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_bmap.h')
| -rw-r--r-- | fs/xfs/xfs_bmap.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h index 8e0d73d9ccc4..80e93409b78d 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 @@ -26,6 +26,20 @@ 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. */ @@ -275,7 +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. @@ -309,6 +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 */ /* |