diff options
Diffstat (limited to 'fs/jffs2/jffs2_1pass.c')
| -rw-r--r-- | fs/jffs2/jffs2_1pass.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/jffs2/jffs2_1pass.c b/fs/jffs2/jffs2_1pass.c index c55d472047..432579239d 100644 --- a/fs/jffs2/jffs2_1pass.c +++ b/fs/jffs2/jffs2_1pass.c @@ -1528,6 +1528,8 @@ jffs2_1pass_build_lists(struct part_info * part) uint32_t sumlen; int ret; #endif + /* Indicates a sector with a CLEANMARKER was found */ + int clean_sector = 0; /* Set buf_size to maximum length */ buf_size = DEFAULT_EMPTY_SCAN_SIZE; @@ -1652,6 +1654,14 @@ jffs2_1pass_build_lists(struct part_info * part) ofs += 4; } /* Ran off end. */ + /* + * If this sector had a clean marker at the + * beginning, and immediately following this + * have been a bunch of FF bytes, treat the + * entire sector as empty. + */ + if (clean_sector) + break; /* See how much more there is to read in this * eraseblock... @@ -1673,6 +1683,11 @@ jffs2_1pass_build_lists(struct part_info * part) buf_ofs = ofs; goto more_empty; } + /* + * Found something not erased in the sector, so reset + * the 'clean_sector' flag. + */ + clean_sector = 0; if (node->magic != JFFS2_MAGIC_BITMASK || !hdr_crc(node)) { ofs += 4; @@ -1754,6 +1769,16 @@ jffs2_1pass_build_lists(struct part_info * part) "%d != %zu\n", node->totlen, sizeof(struct jffs2_unknown_node)); + if ((node->totlen == + sizeof(struct jffs2_unknown_node)) && + (ofs == sector_ofs)) { + /* + * Found a CLEANMARKER at the beginning + * of the sector. It's in the correct + * place with correct size and CRC. + */ + clean_sector = 1; + } break; case JFFS2_NODETYPE_PADDING: if (node->totlen < sizeof(struct jffs2_unknown_node)) |