Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / ntfs / bitmap.h

diff --git a/kernel/fs/ntfs/bitmap.h b/kernel/fs/ntfs/bitmap.h
new file mode 100644 (file)
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--- /dev/null
+++ b/kernel/fs/ntfs/bitmap.h
@@ -0,0 +1,118 @@
+/*
+ * bitmap.h - Defines for NTFS kernel bitmap handling.  Part of the Linux-NTFS
+ *           project.
+ *
+ * Copyright (c) 2004 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the Linux-NTFS
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _LINUX_NTFS_BITMAP_H
+#define _LINUX_NTFS_BITMAP_H
+
+#ifdef NTFS_RW
+
+#include <linux/fs.h>
+
+#include "types.h"
+
+extern int __ntfs_bitmap_set_bits_in_run(struct inode *vi, const s64 start_bit,
+               const s64 count, const u8 value, const bool is_rollback);
+
+/**
+ * ntfs_bitmap_set_bits_in_run - set a run of bits in a bitmap to a value
+ * @vi:                        vfs inode describing the bitmap
+ * @start_bit:         first bit to set
+ * @count:             number of bits to set
+ * @value:             value to set the bits to (i.e. 0 or 1)
+ *
+ * Set @count bits starting at bit @start_bit in the bitmap described by the
+ * vfs inode @vi to @value, where @value is either 0 or 1.
+ *
+ * Return 0 on success and -errno on error.
+ */
+static inline int ntfs_bitmap_set_bits_in_run(struct inode *vi,
+               const s64 start_bit, const s64 count, const u8 value)
+{
+       return __ntfs_bitmap_set_bits_in_run(vi, start_bit, count, value,
+                       false);
+}
+
+/**
+ * ntfs_bitmap_set_run - set a run of bits in a bitmap
+ * @vi:                vfs inode describing the bitmap
+ * @start_bit: first bit to set
+ * @count:     number of bits to set
+ *
+ * Set @count bits starting at bit @start_bit in the bitmap described by the
+ * vfs inode @vi.
+ *
+ * Return 0 on success and -errno on error.
+ */
+static inline int ntfs_bitmap_set_run(struct inode *vi, const s64 start_bit,
+               const s64 count)
+{
+       return ntfs_bitmap_set_bits_in_run(vi, start_bit, count, 1);
+}
+
+/**
+ * ntfs_bitmap_clear_run - clear a run of bits in a bitmap
+ * @vi:                vfs inode describing the bitmap
+ * @start_bit: first bit to clear
+ * @count:     number of bits to clear
+ *
+ * Clear @count bits starting at bit @start_bit in the bitmap described by the
+ * vfs inode @vi.
+ *
+ * Return 0 on success and -errno on error.
+ */
+static inline int ntfs_bitmap_clear_run(struct inode *vi, const s64 start_bit,
+               const s64 count)
+{
+       return ntfs_bitmap_set_bits_in_run(vi, start_bit, count, 0);
+}
+
+/**
+ * ntfs_bitmap_set_bit - set a bit in a bitmap
+ * @vi:                vfs inode describing the bitmap
+ * @bit:       bit to set
+ *
+ * Set bit @bit in the bitmap described by the vfs inode @vi.
+ *
+ * Return 0 on success and -errno on error.
+ */
+static inline int ntfs_bitmap_set_bit(struct inode *vi, const s64 bit)
+{
+       return ntfs_bitmap_set_run(vi, bit, 1);
+}
+
+/**
+ * ntfs_bitmap_clear_bit - clear a bit in a bitmap
+ * @vi:                vfs inode describing the bitmap
+ * @bit:       bit to clear
+ *
+ * Clear bit @bit in the bitmap described by the vfs inode @vi.
+ *
+ * Return 0 on success and -errno on error.
+ */
+static inline int ntfs_bitmap_clear_bit(struct inode *vi, const s64 bit)
+{
+       return ntfs_bitmap_clear_run(vi, bit, 1);
+}
+
+#endif /* NTFS_RW */
+
+#endif /* defined _LINUX_NTFS_BITMAP_H */