Merge tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux

[karo-tx-linux.git] / fs / xfs / xfs_ioctl.c

diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index c1df3c623de203f7d941ef0b706c76de270ada68..c1c3ef88a260278fb83ca4014a890284b8df5f42 100644 (file)
--- 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 +1603,26 @@ 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.pad32, 0, sizeof(eofb.pad32)) ||
+                   memchr_inv(eofb.pad64, 0, sizeof(eofb.pad64)))
+                       return -XFS_ERROR(EINVAL);
+
+               error = xfs_icache_free_eofblocks(mp, &eofb);
+               return -error;
+       }
+
        default:
                return -ENOTTY;
        }