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!
diff --git a/fs/jfs/jfs_metapage.h b/fs/jfs/jfs_metapage.h
new file mode 100644
index 0000000..0e58aba
--- /dev/null
+++ b/fs/jfs/jfs_metapage.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2000-2002
+ * Portions Copyright (c) Christoph Hellwig, 2001-2002
+ *
+ * This program 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 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; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef _H_JFS_METAPAGE
+#define _H_JFS_METAPAGE
+
+#include <linux/pagemap.h>
+
+struct metapage {
+ /* Common logsyncblk prefix (see jfs_logmgr.h) */
+ u16 xflag;
+ u16 unused;
+ lid_t lid;
+ int lsn;
+ struct list_head synclist;
+ /* End of logsyncblk prefix */
+
+ unsigned long flag; /* See Below */
+ unsigned long count; /* Reference count */
+ void *data; /* Data pointer */
+
+ /* list management stuff */
+ struct metapage *hash_prev;
+ struct metapage *hash_next; /* Also used for free list */
+
+ /*
+ * mapping & index become redundant, but we need these here to
+ * add the metapage to the hash before we have the real page
+ */
+ struct address_space *mapping;
+ unsigned long index;
+ wait_queue_head_t wait;
+
+ /* implementation */
+ struct page *page;
+ unsigned long logical_size;
+
+ /* Journal management */
+ int clsn;
+ atomic_t nohomeok;
+ struct jfs_log *log;
+};
+
+/* metapage flag */
+#define META_locked 0
+#define META_absolute 1
+#define META_free 2
+#define META_dirty 3
+#define META_sync 4
+#define META_discard 5
+#define META_forced 6
+#define META_stale 7
+
+#define mark_metapage_dirty(mp) set_bit(META_dirty, &(mp)->flag)
+
+/* function prototypes */
+extern struct metapage *__get_metapage(struct inode *inode,
+ unsigned long lblock, unsigned int size,
+ int absolute, unsigned long new);
+
+#define read_metapage(inode, lblock, size, absolute)\
+ __get_metapage(inode, lblock, size, absolute, FALSE)
+
+#define get_metapage(inode, lblock, size, absolute)\
+ __get_metapage(inode, lblock, size, absolute, TRUE)
+
+extern void release_metapage(struct metapage *);
+extern void hold_metapage(struct metapage *, int);
+
+static inline void write_metapage(struct metapage *mp)
+{
+ set_bit(META_dirty, &mp->flag);
+ release_metapage(mp);
+}
+
+static inline void flush_metapage(struct metapage *mp)
+{
+ set_bit(META_sync, &mp->flag);
+ write_metapage(mp);
+}
+
+static inline void discard_metapage(struct metapage *mp)
+{
+ clear_bit(META_dirty, &mp->flag);
+ set_bit(META_discard, &mp->flag);
+ release_metapage(mp);
+}
+
+/*
+ * This routines invalidate all pages for an extent.
+ */
+extern void __invalidate_metapages(struct inode *, s64, int);
+#define invalidate_pxd_metapages(ip, pxd) \
+ __invalidate_metapages((ip), addressPXD(&(pxd)), lengthPXD(&(pxd)))
+#define invalidate_dxd_metapages(ip, dxd) \
+ __invalidate_metapages((ip), addressDXD(&(dxd)), lengthDXD(&(dxd)))
+#define invalidate_xad_metapages(ip, xad) \
+ __invalidate_metapages((ip), addressXAD(&(xad)), lengthXAD(&(xad)))
+
+#endif /* _H_JFS_METAPAGE */