You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
133 lines
4.4 KiB
Diff
133 lines
4.4 KiB
Diff
--- a/fs/jffs2/build.c
|
|
+++ b/fs/jffs2/build.c
|
|
@@ -112,6 +112,17 @@ static int jffs2_build_filesystem(struct
|
|
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. */
|
|
--- a/fs/jffs2/scan.c
|
|
+++ b/fs/jffs2/scan.c
|
|
@@ -72,7 +72,7 @@ static int file_dirty(struct jffs2_sb_in
|
|
return ret;
|
|
if ((ret = jffs2_scan_dirty_space(c, jeb, jeb->free_size)))
|
|
return ret;
|
|
- /* Turned wasted size into dirty, since we apparently
|
|
+ /* Turned wasted size into dirty, since we apparently
|
|
think it's recoverable now. */
|
|
jeb->dirty_size += jeb->wasted_size;
|
|
c->dirty_size += jeb->wasted_size;
|
|
@@ -147,8 +147,11 @@ int jffs2_scan_medium(struct jffs2_sb_in
|
|
/* 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;
|
|
@@ -403,7 +406,7 @@ static int jffs2_scan_xref_node(struct j
|
|
if (!ref)
|
|
return -ENOMEM;
|
|
|
|
- /* BEFORE jffs2_build_xattr_subsystem() called,
|
|
+ /* BEFORE jffs2_build_xattr_subsystem() called,
|
|
* and AFTER xattr_ref is marked as a dead xref,
|
|
* ref->xid is used to store 32bit xid, xd is not used
|
|
* ref->ino is used to store 32bit inode-number, ic is not used
|
|
@@ -476,7 +479,7 @@ static int jffs2_scan_eraseblock (struct
|
|
struct jffs2_sum_marker *sm;
|
|
void *sumptr = NULL;
|
|
uint32_t sumlen;
|
|
-
|
|
+
|
|
if (!buf_size) {
|
|
/* XIP case. Just look, point at the summary if it's there */
|
|
sm = (void *)buf + c->sector_size - sizeof(*sm);
|
|
@@ -492,9 +495,9 @@ static int jffs2_scan_eraseblock (struct
|
|
buf_len = sizeof(*sm);
|
|
|
|
/* Read as much as we want into the _end_ of the preallocated buffer */
|
|
- err = jffs2_fill_scan_buf(c, buf + buf_size - buf_len,
|
|
+ err = jffs2_fill_scan_buf(c, buf + buf_size - buf_len,
|
|
jeb->offset + c->sector_size - buf_len,
|
|
- buf_len);
|
|
+ buf_len);
|
|
if (err)
|
|
return err;
|
|
|
|
@@ -513,9 +516,9 @@ static int jffs2_scan_eraseblock (struct
|
|
}
|
|
if (buf_len < sumlen) {
|
|
/* Need to read more so that the entire summary node is present */
|
|
- err = jffs2_fill_scan_buf(c, sumptr,
|
|
+ err = jffs2_fill_scan_buf(c, sumptr,
|
|
jeb->offset + c->sector_size - sumlen,
|
|
- sumlen - buf_len);
|
|
+ sumlen - buf_len);
|
|
if (err)
|
|
return err;
|
|
}
|
|
@@ -528,7 +531,7 @@ static int jffs2_scan_eraseblock (struct
|
|
|
|
if (buf_size && sumlen > buf_size)
|
|
kfree(sumptr);
|
|
- /* If it returns with a real error, bail.
|
|
+ /* If it returns with a real error, bail.
|
|
If it returns positive, that's a block classification
|
|
(i.e. BLK_STATE_xxx) so return that too.
|
|
If it returns zero, fall through to full scan. */
|
|
@@ -549,6 +552,17 @@ static int jffs2_scan_eraseblock (struct
|
|
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;
|
|
max_ofs = EMPTY_SCAN_SIZE(c->sector_size);
|
|
@@ -674,7 +688,7 @@ scan_more:
|
|
scan_end = buf_len;
|
|
goto more_empty;
|
|
}
|
|
-
|
|
+
|
|
/* See how much more there is to read in this eraseblock... */
|
|
buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
|
|
if (!buf_len) {
|
|
@@ -910,7 +924,7 @@ scan_more:
|
|
|
|
D1(printk(KERN_DEBUG "Block at 0x%08x: free 0x%08x, dirty 0x%08x, unchecked 0x%08x, used 0x%08x, wasted 0x%08x\n",
|
|
jeb->offset,jeb->free_size, jeb->dirty_size, jeb->unchecked_size, jeb->used_size, jeb->wasted_size));
|
|
-
|
|
+
|
|
/* mark_node_obsolete can add to wasted !! */
|
|
if (jeb->wasted_size) {
|
|
jeb->dirty_size += jeb->wasted_size;
|