resize.f2fs: fill zeros for expanded ssa area
This will avoid wrong behavior after expanding volume.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fsck/resize.c b/fsck/resize.c
index 4813de7..7691524 100644
--- a/fsck/resize.c
+++ b/fsck/resize.c
@@ -206,24 +206,37 @@
struct f2fs_super_block *sb = F2FS_RAW_SUPER(sbi);
block_t old_sum_blkaddr = get_sb(ssa_blkaddr);
block_t new_sum_blkaddr = get_newsb(ssa_blkaddr);
- unsigned int segno;
+ block_t end_sum_blkaddr = get_newsb(main_blkaddr);
+ block_t blkaddr;
+ void *zero_block = calloc(BLOCK_SZ, 1);
+
+ ASSERT(zero_block);
if (offset && new_sum_blkaddr < old_sum_blkaddr + offset) {
- segno = offset;
- while (segno != TOTAL_SEGS(sbi)) {
- move_ssa(sbi, segno, new_sum_blkaddr + segno - offset);
- segno++;
+ blkaddr = new_sum_blkaddr;
+ while (blkaddr < end_sum_blkaddr) {
+ if (blkaddr - new_sum_blkaddr < TOTAL_SEGS(sbi))
+ move_ssa(sbi, offset, blkaddr);
+ else
+ dev_write_block(zero_block, blkaddr);
+ offset++;
+ blkaddr++;
}
} else {
- segno = TOTAL_SEGS(sbi) - 1;
- while (segno != offset - 1) {
- move_ssa(sbi, segno, new_sum_blkaddr + segno - offset);
- segno--;
+ blkaddr = end_sum_blkaddr - 1;
+ offset = TOTAL_SEGS(sbi) - 1;
+ while (blkaddr >= new_sum_blkaddr) {
+ if (blkaddr >= TOTAL_SEGS(sbi) + new_sum_blkaddr)
+ dev_write_block(zero_block, blkaddr);
+ else
+ move_ssa(sbi, offset--, blkaddr);
+ blkaddr--;
}
}
DBG(0, "Info: Done to migrate SSA blocks: sum_blkaddr = 0x%x -> 0x%x\n",
old_sum_blkaddr, new_sum_blkaddr);
+ free(zero_block);
}
static int shrink_nats(struct f2fs_sb_info *sbi,
