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bcachefs: Fsck fixes

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Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2021-02-12 20:53:29 -05:00 committed by Kent Overstreet
parent 9d40326176
commit 2bb748a695
1 changed files with 11 additions and 4 deletions
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15
fs/bcachefs/fsck.c
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@ -1072,6 +1072,11 @@ static void inc_link(struct bch_fs *c, nlink_table *links,
if (inum < range_start || inum >= *range_end)
return;
if (inum - range_start >= SIZE_MAX / sizeof(struct nlink)) {
*range_end = inum;
return;
}
link = genradix_ptr_alloc(links, inum - range_start, GFP_KERNEL);
if (!link) {
bch_verbose(c, "allocation failed during fsck - will need another pass");
@ -1346,23 +1351,25 @@ static int bch2_gc_walk_inodes(struct bch_fs *c,
nlinks_iter = genradix_iter_init(links, 0);
while ((k = bch2_btree_iter_peek(iter)).k &&
!(ret2 = bkey_err(k))) {
!(ret2 = bkey_err(k)) &&
iter->pos.offset < range_end) {
peek_nlinks: link = genradix_iter_peek(&nlinks_iter, links);
if (!link && (!k.k || iter->pos.offset >= range_end))
break;
nlinks_pos = range_start + nlinks_iter.pos;
if (iter->pos.offset > nlinks_pos) {
if (link && nlinks_pos < iter->pos.offset) {
/* Should have been caught by dirents pass: */
need_fsck_err_on(link && link->count, c,
need_fsck_err_on(link->count, c,
"missing inode %llu (nlink %u)",
nlinks_pos, link->count);
genradix_iter_advance(&nlinks_iter, links);
goto peek_nlinks;
}
if (iter->pos.offset < nlinks_pos || !link)
if (!link || nlinks_pos > iter->pos.offset)
link = &zero_links;
if (k.k && k.k->type == KEY_TYPE_inode) {