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fsck.f2fs: select to update the latest valid summary

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If two dnode blocks indicate one block address, it needs to keep the latest
valid address selectively.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-07-01 18:19:53 -07:00
parent d24f1bb16d
commit 7ac070116b
1 changed files with 44 additions and 0 deletions
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44
fsck/fsck.c
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@ -191,6 +191,47 @@ out:
return ret;
}
static int is_valid_summary(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
u32 blk_addr)
{
u16 ofs_in_node = le16_to_cpu(sum->ofs_in_node);
u32 nid = le32_to_cpu(sum->nid);
struct f2fs_node *node_blk = NULL;
__le32 target_blk_addr;
struct node_info ni;
int ret = 0;
node_blk = (struct f2fs_node *)calloc(BLOCK_SZ, 1);
ASSERT(node_blk != NULL);
if (!IS_VALID_NID(sbi, nid))
goto out;
get_node_info(sbi, nid, &ni);
if (!IS_VALID_BLK_ADDR(sbi, ni.blk_addr))
goto out;
/* read node_block */
ret = dev_read_block(node_blk, ni.blk_addr);
ASSERT(ret >= 0);
if (le32_to_cpu(node_blk->footer.nid) != nid)
goto out;
/* check its block address */
if (node_blk->footer.nid == node_blk->footer.ino)
target_blk_addr = node_blk->i.i_addr[ofs_in_node];
else
target_blk_addr = node_blk->dn.addr[ofs_in_node];
if (blk_addr == le32_to_cpu(target_blk_addr))
ret = 1;
out:
free(node_blk);
return ret;
}
static int is_valid_ssa_data_blk(struct f2fs_sb_info *sbi, u32 blk_addr,
u32 parent_nid, u16 idx_in_node, u8 version)
{
@ -238,6 +279,9 @@ static int is_valid_ssa_data_blk(struct f2fs_sb_info *sbi, u32 blk_addr,
DBG(0, "Target data block addr [0x%x]\n", blk_addr);
ASSERT_MSG("Invalid data seg summary\n");
ret = -EINVAL;
} else if (is_valid_summary(sbi, sum_entry, blk_addr)) {
/* delete wrong index */
ret = -EINVAL;
} else {
FIX_MSG("Set data summary 0x%x -> [0x%x] [0x%x] [0x%x]",
segno, parent_nid, version, idx_in_node);