add generic 2.6.23 patches and config

[openwrt/svn-archive/archive.git] / target / linux / generic-2.6 / patches-2.6.23 / 204-jffs2_eofdetect.patch

diff --git a/target/linux/generic-2.6/patches-2.6.23/204-jffs2_eofdetect.patch b/target/linux/generic-2.6/patches-2.6.23/204-jffs2_eofdetect.patch
new file mode 100644 (file)
index 0000000..f1ffac6
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.23/204-jffs2_eofdetect.patch
@@ -0,0 +1,60 @@
+Index: linux-2.6.23-rc6/fs/jffs2/build.c
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/jffs2/build.c     2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/fs/jffs2/build.c  2007-09-21 16:24:05.000000000 +0800
+@@ -105,6 +105,17 @@
+       dbg_fsbuild("scanned flash completely\n");
+       jffs2_dbg_dump_block_lists_nolock(c);
+ 
++      if (c->flags & (1 << 7)) {
++              printk("%s(): unlocking the mtd device... ", __func__);
++              if (c->mtd->unlock)
++                      c->mtd->unlock(c->mtd, 0, c->mtd->size);
++              printk("done.\n");
++              
++              printk("%s(): erasing all blocks after the end marker... ", __func__);
++              jffs2_erase_pending_blocks(c, -1);
++              printk("done.\n");
++      }
++
+       dbg_fsbuild("pass 1 starting\n");
+       c->flags |= JFFS2_SB_FLAG_BUILDING;
+       /* Now scan the directory tree, increasing nlink according to every dirent found. */
+Index: linux-2.6.23-rc6/fs/jffs2/scan.c
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/jffs2/scan.c      2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/fs/jffs2/scan.c   2007-09-21 16:24:05.000000000 +0800
+@@ -142,9 +142,12 @@
+ 
+               /* reset summary info for next eraseblock scan */
+               jffs2_sum_reset_collected(s);
+-
+-              ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
+-                                              buf_size, s);
++              
++              if (c->flags & (1 << 7))
++                      ret = BLK_STATE_ALLFF;
++              else
++                      ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
++                                                      buf_size, s);
+ 
+               if (ret < 0)
+                       goto out;
+@@ -545,6 +548,17 @@
+                       return err;
+       }
+ 
++      if ((buf[0] == 0xde) &&
++              (buf[1] == 0xad) &&
++              (buf[2] == 0xc0) &&
++              (buf[3] == 0xde)) {
++              /* end of filesystem. erase everything after this point */
++              printk("%s(): End of filesystem marker found at 0x%x\n", __func__, jeb->offset);
++              c->flags |= (1 << 7);
++
++              return BLK_STATE_ALLFF;
++      }
++      
+       /* We temporarily use 'ofs' as a pointer into the buffer/jeb */
+       ofs = 0;
+