ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/target/linux/generic/pending-5.4/532-jffs2_eofdetect.patch b/target/linux/generic/pending-5.4/532-jffs2_eofdetect.patch
new file mode 100644
index 0000000..4cff181
--- /dev/null
+++ b/target/linux/generic/pending-5.4/532-jffs2_eofdetect.patch
@@ -0,0 +1,65 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: fs: jffs2: EOF marker
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ fs/jffs2/build.c | 10 ++++++++++
+ fs/jffs2/scan.c | 21 +++++++++++++++++++--
+ 2 files changed, 29 insertions(+), 2 deletions(-)
+
+--- a/fs/jffs2/build.c
++++ b/fs/jffs2/build.c
+@@ -117,6 +117,16 @@ 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__);
++ 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
+@@ -148,8 +148,14 @@ 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)) {
++ if (mtd_block_isbad(c->mtd, jeb->offset))
++ ret = BLK_STATE_BADBLOCK;
++ else
++ 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;
+@@ -566,6 +572,17 @@ full_scan:
+ 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);