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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/freevxfs/vxfs_kcompat.h
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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 00000000000..342a4cc860f
--- /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 */