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Diffstat (limited to 'fs/freevxfs/vxfs_kcompat.h')
-rw-r--r--fs/freevxfs/vxfs_kcompat.h49
1 files changed, 49 insertions, 0 deletions
diff --git a/fs/freevxfs/vxfs_kcompat.h b/fs/freevxfs/vxfs_kcompat.h
new file mode 100644
index 000000000000..342a4cc860f4
--- /dev/null
+++ b/fs/freevxfs/vxfs_kcompat.h
@@ -0,0 +1,49 @@
+#ifndef _VXFS_KCOMPAT_H
+#define _VXFS_KCOMPAT_H
+
+#include <linux/version.h>
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
+
+#include <linux/blkdev.h>
+
+typedef long sector_t;
+
+/* From include/linux/fs.h (Linux 2.5.2-pre3) */
+static inline struct buffer_head * sb_bread(struct super_block *sb, int block)
+{
+ return bread(sb->s_dev, block, sb->s_blocksize);
+}
+
+/* Dito. */
+static inline void map_bh(struct buffer_head *bh, struct super_block *sb, int block)
+{
+ bh->b_state |= 1 << BH_Mapped;
+ bh->b_dev = sb->s_dev;
+ bh->b_blocknr = block;
+}
+
+/* From fs/block_dev.c (Linux 2.5.2-pre2) */
+static inline int sb_set_blocksize(struct super_block *sb, int size)
+{
+ int bits;
+ if (set_blocksize(sb->s_dev, size) < 0)
+ return 0;
+ sb->s_blocksize = size;
+ for (bits = 9, size >>= 9; size >>= 1; bits++)
+ ;
+ sb->s_blocksize_bits = bits;
+ return sb->s_blocksize;
+}
+
+/* Dito. */
+static inline int sb_min_blocksize(struct super_block *sb, int size)
+{
+ int minsize = get_hardsect_size(sb->s_dev);
+ if (size < minsize)
+ size = minsize;
+ return sb_set_blocksize(sb, size);
+}
+
+#endif /* Kernel 2.4 */
+#endif /* _VXFS_KCOMPAT_H */