[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_dfrag.c b/fs/xfs/xfs_dfrag.c
index 4968a63..99daf8c 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
+ * Copyright (c) 2000-2006 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
@@ -54,24 +54,14 @@
xfs_swapext_t __user *sxu)
{
xfs_swapext_t *sxp;
- xfs_inode_t *ip=NULL, *tip=NULL, *ips[2];
- xfs_trans_t *tp;
+ xfs_inode_t *ip=NULL, *tip=NULL;
xfs_mount_t *mp;
- xfs_bstat_t *sbp;
struct file *fp = NULL, *tfp = NULL;
vnode_t *vp, *tvp;
- static uint lock_flags = XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL;
- int ilf_fields, tilf_fields;
int error = 0;
- xfs_ifork_t *tempifp, *ifp, *tifp;
- __uint64_t tmp;
- int aforkblks = 0;
- int taforkblks = 0;
- char locked = 0;
sxp = kmem_alloc(sizeof(xfs_swapext_t), KM_MAYFAIL);
- tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL);
- if (!sxp || !tempifp) {
+ if (!sxp) {
error = XFS_ERROR(ENOMEM);
goto error0;
}
@@ -118,14 +108,56 @@
mp = ip->i_mount;
- sbp = &sxp->sx_stat;
-
if (XFS_FORCED_SHUTDOWN(mp)) {
error = XFS_ERROR(EIO);
goto error0;
}
- locked = 1;
+ error = XFS_SWAP_EXTENTS(mp, &ip->i_iocore, &tip->i_iocore, sxp);
+
+ error0:
+ if (fp != NULL)
+ fput(fp);
+ if (tfp != NULL)
+ fput(tfp);
+
+ if (sxp != NULL)
+ kmem_free(sxp, sizeof(xfs_swapext_t));
+
+ return error;
+}
+
+int
+xfs_swap_extents(
+ xfs_inode_t *ip,
+ xfs_inode_t *tip,
+ xfs_swapext_t *sxp)
+{
+ xfs_mount_t *mp;
+ xfs_inode_t *ips[2];
+ xfs_trans_t *tp;
+ xfs_bstat_t *sbp = &sxp->sx_stat;
+ vnode_t *vp, *tvp;
+ xfs_ifork_t *tempifp, *ifp, *tifp;
+ int ilf_fields, tilf_fields;
+ static uint lock_flags = XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL;
+ int error = 0;
+ int aforkblks = 0;
+ int taforkblks = 0;
+ __uint64_t tmp;
+ char locked = 0;
+
+ mp = ip->i_mount;
+
+ tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL);
+ if (!tempifp) {
+ error = XFS_ERROR(ENOMEM);
+ goto error0;
+ }
+
+ sbp = &sxp->sx_stat;
+ vp = XFS_ITOV(ip);
+ tvp = XFS_ITOV(tip);
/* Lock in i_ino order */
if (ip->i_ino < tip->i_ino) {
@@ -137,6 +169,7 @@
}
xfs_lock_inodes(ips, 2, 0, lock_flags);
+ locked = 1;
/* Check permissions */
error = xfs_iaccess(ip, S_IWUSR, NULL);
@@ -360,16 +393,7 @@
xfs_iunlock(ip, lock_flags);
xfs_iunlock(tip, lock_flags);
}
-
- if (fp != NULL)
- fput(fp);
- if (tfp != NULL)
- fput(tfp);
-
- if (sxp != NULL)
- kmem_free(sxp, sizeof(xfs_swapext_t));
if (tempifp != NULL)
kmem_free(tempifp, sizeof(xfs_ifork_t));
-
return error;
}