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authorBrian Foster <bfoster@redhat.com>2012-11-07 12:21:12 -0500
committerBen Myers <bpm@sgi.com>2012-11-08 15:27:49 -0600
commit8ca149de80478441352a8622ea15fae7de703ced (patch)
treed98cd5200aa1180b01925a400fe6e4155e0e5a0b /fs/xfs/xfs_ioctl.c
parent41176a68e3f710630feace536d0277a092e206b5 (diff)
xfs: add XFS_IOC_FREE_EOFBLOCKS ioctl
The XFS_IOC_FREE_EOFBLOCKS ioctl allows users to invoke an EOFBLOCKS scan. The xfs_eofblocks structure is defined to support the command parameters (scan mode). Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_ioctl.c')
-rw-r--r--fs/xfs/xfs_ioctl.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index c1df3c623de..5b20ab0b4f9 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -42,6 +42,7 @@
#include "xfs_inode_item.h"
#include "xfs_export.h"
#include "xfs_trace.h"
+#include "xfs_icache.h"
#include <linux/capability.h>
#include <linux/dcache.h>
@@ -1602,6 +1603,25 @@ xfs_file_ioctl(
error = xfs_errortag_clearall(mp, 1);
return -error;
+ case XFS_IOC_FREE_EOFBLOCKS: {
+ struct xfs_eofblocks eofb;
+
+ if (copy_from_user(&eofb, arg, sizeof(eofb)))
+ return -XFS_ERROR(EFAULT);
+
+ if (eofb.eof_version != XFS_EOFBLOCKS_VERSION)
+ return -XFS_ERROR(EINVAL);
+
+ if (eofb.eof_flags & ~XFS_EOF_FLAGS_VALID)
+ return -XFS_ERROR(EINVAL);
+
+ if (memchr_inv(eofb.pad, 0, sizeof(eofb.pad)))
+ return -XFS_ERROR(EINVAL);
+
+ error = xfs_icache_free_eofblocks(mp, &eofb);
+ return -error;
+ }
+
default:
return -ENOTTY;
}