[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>
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 668ad23..a682eb5 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -63,6 +63,8 @@
struct xfs_iocore;
struct xfs_bmbt_irec;
struct xfs_bmap_free;
+struct xfs_extdelta;
+struct xfs_swapext;
extern struct vfsops xfs_vfsops;
extern struct vnodeops xfs_vnodeops;
@@ -194,7 +196,12 @@
xfs_fileoff_t, xfs_filblks_t, int,
xfs_fsblock_t *, xfs_extlen_t,
struct xfs_bmbt_irec *, int *,
- struct xfs_bmap_free *);
+ struct xfs_bmap_free *, struct xfs_extdelta *);
+typedef int (*xfs_bunmapi_t)(struct xfs_trans *,
+ void *, xfs_fileoff_t,
+ xfs_filblks_t, int, xfs_extnum_t,
+ xfs_fsblock_t *, struct xfs_bmap_free *,
+ struct xfs_extdelta *, int *);
typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
typedef int (*xfs_iomap_write_direct_t)(
void *, xfs_off_t, size_t, int,
@@ -214,10 +221,13 @@
typedef void (*xfs_unlk_t)(void *, unsigned int);
typedef xfs_fsize_t (*xfs_size_t)(void *);
typedef xfs_fsize_t (*xfs_iodone_t)(struct vfs *);
+typedef int (*xfs_swap_extents_t)(void *, void *,
+ struct xfs_swapext*);
typedef struct xfs_ioops {
xfs_ioinit_t xfs_ioinit;
xfs_bmapi_t xfs_bmapi_func;
+ xfs_bunmapi_t xfs_bunmapi_func;
xfs_bmap_eof_t xfs_bmap_eof_func;
xfs_iomap_write_direct_t xfs_iomap_write_direct;
xfs_iomap_write_delay_t xfs_iomap_write_delay;
@@ -230,13 +240,17 @@
xfs_unlk_t xfs_unlock;
xfs_size_t xfs_size_func;
xfs_iodone_t xfs_iodone;
+ xfs_swap_extents_t xfs_swap_extents_func;
} xfs_ioops_t;
#define XFS_IOINIT(vfsp, args, flags) \
(*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags)
-#define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist) \
+#define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist,delta) \
(*(mp)->m_io_ops.xfs_bmapi_func) \
- (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist)
+ (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist,delta)
+#define XFS_BUNMAPI(mp, trans,io,bno,len,f,nexts,first,flist,delta,done) \
+ (*(mp)->m_io_ops.xfs_bunmapi_func) \
+ (trans,(io)->io_obj,bno,len,f,nexts,first,flist,delta,done)
#define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
(*(mp)->m_io_ops.xfs_bmap_eof_func) \
((io)->io_obj, endoff, whichfork, eof)
@@ -266,6 +280,9 @@
(*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
#define XFS_IODONE(vfsp) \
(*(mp)->m_io_ops.xfs_iodone)(vfsp)
+#define XFS_SWAP_EXTENTS(mp, io, tio, sxp) \
+ (*(mp)->m_io_ops.xfs_swap_extents_func) \
+ ((io)->io_obj, (tio)->io_obj, sxp)
#ifdef HAVE_PERCPU_SB