+// SPDX-License-Identifier: GPL-2.0
#include "bcachefs.h"
#include "btree_update.h"
#include "dirent.h"
#include "error.h"
-#include "fs.h"
+#include "fs-common.h"
#include "fsck.h"
#include "inode.h"
#include "keylist.h"
#define QSTR(n) { { { .len = strlen(n) } }, .name = n }
-static int remove_dirent(struct bch_fs *c, struct btree_iter *iter,
+static s64 bch2_count_inode_sectors(struct btree_trans *trans, u64 inum)
+{
+ struct btree_iter *iter;
+ struct bkey_s_c k;
+ u64 sectors = 0;
+ int ret;
+
+ for_each_btree_key(trans, iter, BTREE_ID_EXTENTS,
+ POS(inum, 0), 0, k, ret) {
+ if (k.k->p.inode != inum)
+ break;
+
+ if (bkey_extent_is_allocation(k.k))
+ sectors += k.k->size;
+ }
+
+ bch2_trans_iter_free(trans, iter);
+
+ return ret ?: sectors;
+}
+
+static int remove_dirent(struct btree_trans *trans,
struct bkey_s_c_dirent dirent)
{
+ struct bch_fs *c = trans->c;
struct qstr name;
struct bch_inode_unpacked dir_inode;
struct bch_hash_info dir_hash_info;
buf[name.len] = '\0';
name.name = buf;
- /* Unlock iter so we don't deadlock, after copying name: */
- bch2_btree_iter_unlock(iter);
+ /* Unlock so we don't deadlock, after copying name: */
+ bch2_trans_unlock(trans);
ret = bch2_inode_find_by_inum(c, dir_inum, &dir_inode);
if (ret) {
struct bch_inode_unpacked *lostfound_inode,
u64 inum)
{
- struct bch_hash_info lostfound_hash_info =
- bch2_hash_info_init(c, lostfound_inode);
- struct bkey_inode_buf packed;
+ struct bch_inode_unpacked inode_u;
char name_buf[20];
struct qstr name;
int ret;
snprintf(name_buf, sizeof(name_buf), "%llu", inum);
name = (struct qstr) QSTR(name_buf);
- lostfound_inode->bi_nlink++;
-
- bch2_inode_pack(&packed, lostfound_inode);
-
- ret = bch2_btree_insert(c, BTREE_ID_INODES, &packed.inode.k_i,
- NULL, NULL, BTREE_INSERT_NOFAIL);
- if (ret) {
- bch_err(c, "error %i reattaching inode %llu while updating lost+found",
- ret, inum);
- return ret;
- }
+ ret = bch2_trans_do(c, NULL,
+ BTREE_INSERT_ATOMIC|
+ BTREE_INSERT_LAZY_RW,
+ bch2_link_trans(&trans, lostfound_inode->bi_inum,
+ inum, &inode_u, &name));
+ if (ret)
+ bch_err(c, "error %i reattaching inode %llu", ret, inum);
- ret = bch2_dirent_create(c, lostfound_inode->bi_inum,
- &lostfound_hash_info,
- DT_DIR, &name, inum, NULL,
- BTREE_INSERT_NOFAIL);
- if (ret) {
- bch_err(c, "error %i reattaching inode %llu while creating new dirent",
- ret, inum);
- return ret;
- }
return ret;
}
};
}
-static int walk_inode(struct bch_fs *c, struct inode_walker *w, u64 inum)
+static int walk_inode(struct btree_trans *trans,
+ struct inode_walker *w, u64 inum)
{
- w->first_this_inode = inum != w->cur_inum;
- w->cur_inum = inum;
-
- if (w->first_this_inode) {
- int ret = bch2_inode_find_by_inum(c, inum, &w->inode);
+ if (inum != w->cur_inum) {
+ int ret = bch2_inode_find_by_inum_trans(trans, inum,
+ &w->inode);
if (ret && ret != -ENOENT)
return ret;
- w->have_inode = !ret;
+ w->have_inode = !ret;
+ w->cur_inum = inum;
+ w->first_this_inode = true;
+ } else {
+ w->first_this_inode = false;
}
return 0;
struct hash_check {
struct bch_hash_info info;
- struct btree_trans *trans;
/* start of current chain of hash collisions: */
struct btree_iter *chain;
/* next offset in current chain of hash collisions: */
- u64 next;
+ u64 chain_end;
};
-static void hash_check_init(const struct bch_hash_desc desc,
- struct btree_trans *trans,
+static void hash_check_init(struct hash_check *h)
+{
+ h->chain = NULL;
+ h->chain_end = 0;
+}
+
+static void hash_stop_chain(struct btree_trans *trans,
struct hash_check *h)
{
- h->trans = trans;
- h->chain = bch2_trans_get_iter(trans, desc.btree_id, POS_MIN, 0);
- h->next = -1;
+ if (h->chain)
+ bch2_trans_iter_free(trans, h->chain);
+ h->chain = NULL;
}
-static void hash_check_set_inode(struct hash_check *h, struct bch_fs *c,
+static void hash_check_set_inode(struct btree_trans *trans,
+ struct hash_check *h,
const struct bch_inode_unpacked *bi)
{
- h->info = bch2_hash_info_init(c, bi);
- h->next = -1;
+ h->info = bch2_hash_info_init(trans->c, bi);
+ hash_stop_chain(trans, h);
}
static int hash_redo_key(const struct bch_hash_desc desc,
- struct hash_check *h, struct bch_fs *c,
+ struct btree_trans *trans, struct hash_check *h,
struct btree_iter *k_iter, struct bkey_s_c k,
u64 hashed)
{
bkey_reassemble(tmp, k);
- ret = bch2_btree_delete_at(k_iter, 0);
+ ret = bch2_btree_delete_at(trans, k_iter, 0);
if (ret)
goto err;
- bch2_btree_iter_unlock(k_iter);
-
- bch2_hash_set(desc, &h->info, c, k_iter->pos.inode, NULL, tmp,
- BTREE_INSERT_NOFAIL|
- BCH_HASH_SET_MUST_CREATE);
+ bch2_hash_set(trans, desc, &h->info, k_iter->pos.inode,
+ tmp, BCH_HASH_SET_MUST_CREATE);
+ ret = bch2_trans_commit(trans, NULL, NULL,
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_LAZY_RW);
err:
kfree(tmp);
return ret;
}
-/* fsck hasn't been converted to new transactions yet: */
-static int fsck_hash_delete_at(const struct bch_hash_desc desc,
+static int fsck_hash_delete_at(struct btree_trans *trans,
+ const struct bch_hash_desc desc,
struct bch_hash_info *info,
- struct btree_iter *orig_iter)
+ struct btree_iter *iter)
{
- struct btree_trans trans;
- struct btree_iter *iter;
int ret;
-
- bch2_btree_iter_unlock(orig_iter);
-
- bch2_trans_init(&trans, orig_iter->c);
retry:
- bch2_trans_begin(&trans);
-
- iter = bch2_trans_copy_iter(&trans, orig_iter);
- if (IS_ERR(iter)) {
- ret = PTR_ERR(iter);
- goto err;
- }
-
- ret = bch2_hash_delete_at(&trans, desc, info, iter) ?:
- bch2_trans_commit(&trans, NULL, NULL,
+ ret = bch2_hash_delete_at(trans, desc, info, iter) ?:
+ bch2_trans_commit(trans, NULL, NULL,
BTREE_INSERT_ATOMIC|
- BTREE_INSERT_NOFAIL);
-err:
- if (ret == -EINTR)
- goto retry;
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_LAZY_RW);
+ if (ret == -EINTR) {
+ ret = bch2_btree_iter_traverse(iter);
+ if (!ret)
+ goto retry;
+ }
- bch2_trans_exit(&trans);
return ret;
}
-static int hash_check_duplicates(const struct bch_hash_desc desc,
- struct hash_check *h, struct bch_fs *c,
- struct btree_iter *k_iter, struct bkey_s_c k)
+static int hash_check_duplicates(struct btree_trans *trans,
+ const struct bch_hash_desc desc, struct hash_check *h,
+ struct btree_iter *k_iter, struct bkey_s_c k)
{
+ struct bch_fs *c = trans->c;
struct btree_iter *iter;
struct bkey_s_c k2;
char buf[200];
if (!bkey_cmp(h->chain->pos, k_iter->pos))
return 0;
- iter = bch2_trans_copy_iter(h->trans, h->chain);
+ iter = bch2_trans_copy_iter(trans, h->chain);
BUG_ON(IS_ERR(iter));
- for_each_btree_key_continue(iter, 0, k2) {
+ for_each_btree_key_continue(iter, 0, k2, ret) {
if (bkey_cmp(k2.k->p, k.k->p) >= 0)
break;
!desc.cmp_bkey(k, k2), c,
"duplicate hash table keys:\n%s",
(bch2_bkey_val_to_text(&PBUF(buf), c,
- bkey_type(0, desc.btree_id),
k), buf))) {
- ret = fsck_hash_delete_at(desc, &h->info, k_iter);
+ ret = fsck_hash_delete_at(trans, desc, &h->info, k_iter);
if (ret)
return ret;
ret = 1;
}
}
fsck_err:
- bch2_trans_iter_free(h->trans, iter);
+ bch2_trans_iter_free(trans, iter);
return ret;
}
-static bool key_has_correct_hash(const struct bch_hash_desc desc,
- struct hash_check *h, struct bch_fs *c,
- struct btree_iter *k_iter, struct bkey_s_c k)
+static void hash_set_chain_start(struct btree_trans *trans,
+ const struct bch_hash_desc desc,
+ struct hash_check *h,
+ struct btree_iter *k_iter, struct bkey_s_c k)
{
- u64 hash;
+ bool hole = (k.k->type != KEY_TYPE_whiteout &&
+ k.k->type != desc.key_type);
- if (k.k->type != desc.whiteout_type &&
- k.k->type != desc.key_type)
- return true;
+ if (hole || k.k->p.offset > h->chain_end + 1)
+ hash_stop_chain(trans, h);
+
+ if (!hole) {
+ if (!h->chain) {
+ h->chain = bch2_trans_copy_iter(trans, k_iter);
+ BUG_ON(IS_ERR(h->chain));
+ }
- if (k.k->p.offset != h->next)
- bch2_btree_iter_copy(h->chain, k_iter);
- h->next = k.k->p.offset + 1;
+ h->chain_end = k.k->p.offset;
+ }
+}
+
+static bool key_has_correct_hash(struct btree_trans *trans,
+ const struct bch_hash_desc desc,
+ struct hash_check *h,
+ struct btree_iter *k_iter, struct bkey_s_c k)
+{
+ u64 hash;
+
+ hash_set_chain_start(trans, desc, h, k_iter, k);
if (k.k->type != desc.key_type)
return true;
hash <= k.k->p.offset;
}
-static int hash_check_key(const struct bch_hash_desc desc,
- struct hash_check *h, struct bch_fs *c,
- struct btree_iter *k_iter, struct bkey_s_c k)
+static int hash_check_key(struct btree_trans *trans,
+ const struct bch_hash_desc desc, struct hash_check *h,
+ struct btree_iter *k_iter, struct bkey_s_c k)
{
+ struct bch_fs *c = trans->c;
char buf[200];
u64 hashed;
int ret = 0;
- if (k.k->type != desc.whiteout_type &&
- k.k->type != desc.key_type)
- return 0;
-
- if (k.k->p.offset != h->next)
- bch2_btree_iter_copy(h->chain, k_iter);
- h->next = k.k->p.offset + 1;
+ hash_set_chain_start(trans, desc, h, k_iter, k);
if (k.k->type != desc.key_type)
return 0;
desc.btree_id, k.k->p.offset,
hashed, h->chain->pos.offset,
(bch2_bkey_val_to_text(&PBUF(buf), c,
- bkey_type(0, desc.btree_id),
k), buf))) {
- ret = hash_redo_key(desc, h, c, k_iter, k, hashed);
+ ret = hash_redo_key(desc, trans, h, k_iter, k, hashed);
if (ret) {
bch_err(c, "hash_redo_key err %i", ret);
return ret;
return 1;
}
- ret = hash_check_duplicates(desc, h, c, k_iter, k);
+ ret = hash_check_duplicates(trans, desc, h, k_iter, k);
fsck_err:
return ret;
}
-static int check_dirent_hash(struct hash_check *h, struct bch_fs *c,
+static int check_dirent_hash(struct btree_trans *trans, struct hash_check *h,
struct btree_iter *iter, struct bkey_s_c *k)
{
+ struct bch_fs *c = trans->c;
struct bkey_i_dirent *d = NULL;
int ret = -EINVAL;
char buf[200];
unsigned len;
u64 hash;
- if (key_has_correct_hash(bch2_dirent_hash_desc, h, c, iter, *k))
+ if (key_has_correct_hash(trans, bch2_dirent_hash_desc, h, iter, *k))
return 0;
len = bch2_dirent_name_bytes(bkey_s_c_to_dirent(*k));
if (fsck_err(c, "dirent with junk at end, was %s (%zu) now %s (%u)",
buf, strlen(buf), d->v.d_name, len)) {
- ret = bch2_btree_insert_at(c, NULL, NULL,
- BTREE_INSERT_NOFAIL,
- BTREE_INSERT_ENTRY(iter, &d->k_i));
+ bch2_trans_update(trans, iter, &d->k_i);
+
+ ret = bch2_trans_commit(trans, NULL, NULL,
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_LAZY_RW);
if (ret)
goto err;
*k = bch2_btree_iter_peek(iter);
- BUG_ON(k->k->type != BCH_DIRENT);
+ BUG_ON(k->k->type != KEY_TYPE_dirent);
}
err:
fsck_err:
buf, strlen(buf), BTREE_ID_DIRENTS,
k->k->p.offset, hash, h->chain->pos.offset,
(bch2_bkey_val_to_text(&PBUF(buf), c,
- bkey_type(0, BTREE_ID_DIRENTS),
*k), buf))) {
- ret = hash_redo_key(bch2_dirent_hash_desc,
- h, c, iter, *k, hash);
+ ret = hash_redo_key(bch2_dirent_hash_desc, trans,
+ h, iter, *k, hash);
if (ret)
bch_err(c, "hash_redo_key err %i", ret);
else
static int check_extents(struct bch_fs *c)
{
struct inode_walker w = inode_walker_init();
- struct btree_iter iter;
+ struct btree_trans trans;
+ struct btree_iter *iter;
struct bkey_s_c k;
u64 i_sectors;
int ret = 0;
+ bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
+
bch_verbose(c, "checking extents");
- for_each_btree_key(&iter, c, BTREE_ID_EXTENTS,
- POS(BCACHEFS_ROOT_INO, 0), 0, k) {
- ret = walk_inode(c, &w, k.k->p.inode);
+ iter = bch2_trans_get_iter(&trans, BTREE_ID_EXTENTS,
+ POS(BCACHEFS_ROOT_INO, 0), 0);
+retry:
+ for_each_btree_key_continue(iter, 0, k, ret) {
+ ret = walk_inode(&trans, &w, k.k->p.inode);
if (ret)
break;
!S_ISREG(w.inode.bi_mode) && !S_ISLNK(w.inode.bi_mode), c,
"extent type %u for non regular file, inode %llu mode %o",
k.k->type, k.k->p.inode, w.inode.bi_mode)) {
- bch2_btree_iter_unlock(&iter);
+ bch2_trans_unlock(&trans);
ret = bch2_inode_truncate(c, k.k->p.inode, 0);
if (ret)
w.have_inode &&
!(w.inode.bi_flags & BCH_INODE_I_SECTORS_DIRTY) &&
w.inode.bi_sectors !=
- (i_sectors = bch2_count_inode_sectors(c, w.cur_inum)),
+ (i_sectors = bch2_count_inode_sectors(&trans, w.cur_inum)),
c, "i_sectors wrong: got %llu, should be %llu",
w.inode.bi_sectors, i_sectors)) {
struct bkey_inode_buf p;
w.inode.bi_sectors = i_sectors;
- bch2_btree_iter_unlock(&iter);
+ bch2_trans_unlock(&trans);
bch2_inode_pack(&p, &w.inode);
ret = bch2_btree_insert(c, BTREE_ID_INODES,
&p.inode.k_i, NULL, NULL,
- BTREE_INSERT_NOFAIL);
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_LAZY_RW);
if (ret) {
- bch_err(c, "error in fs gc: error %i "
- "updating inode", ret);
+ bch_err(c, "error in fsck: error %i updating inode", ret);
goto err;
}
/* revalidate iterator: */
- k = bch2_btree_iter_peek(&iter);
+ k = bch2_btree_iter_peek(iter);
}
if (fsck_err_on(w.have_inode &&
!(w.inode.bi_flags & BCH_INODE_I_SIZE_DIRTY) &&
- k.k->type != BCH_RESERVATION &&
- k.k->p.offset > round_up(w.inode.bi_size, PAGE_SIZE) >> 9, c,
+ k.k->type != KEY_TYPE_reservation &&
+ k.k->p.offset > round_up(w.inode.bi_size, block_bytes(c)) >> 9, c,
"extent type %u offset %llu past end of inode %llu, i_size %llu",
k.k->type, k.k->p.offset, k.k->p.inode, w.inode.bi_size)) {
- bch2_btree_iter_unlock(&iter);
+ bch2_trans_unlock(&trans);
ret = bch2_inode_truncate(c, k.k->p.inode,
w.inode.bi_size);
}
err:
fsck_err:
- return bch2_btree_iter_unlock(&iter) ?: ret;
+ if (ret == -EINTR)
+ goto retry;
+ return bch2_trans_exit(&trans) ?: ret;
}
/*
bch_verbose(c, "checking dirents");
- bch2_trans_init(&trans, c);
+ bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
- bch2_trans_preload_iters(&trans);
+ hash_check_init(&h);
iter = bch2_trans_get_iter(&trans, BTREE_ID_DIRENTS,
POS(BCACHEFS_ROOT_INO, 0), 0);
-
- hash_check_init(bch2_dirent_hash_desc, &trans, &h);
-
- for_each_btree_key_continue(iter, 0, k) {
+retry:
+ for_each_btree_key_continue(iter, 0, k, ret) {
struct bkey_s_c_dirent d;
struct bch_inode_unpacked target;
bool have_target;
u64 d_inum;
- ret = walk_inode(c, &w, k.k->p.inode);
+ ret = walk_inode(&trans, &w, k.k->p.inode);
if (ret)
break;
if (fsck_err_on(!w.have_inode, c,
"dirent in nonexisting directory:\n%s",
(bch2_bkey_val_to_text(&PBUF(buf), c,
- BTREE_ID_DIRENTS,
k), buf)) ||
fsck_err_on(!S_ISDIR(w.inode.bi_mode), c,
"dirent in non directory inode type %u:\n%s",
mode_to_type(w.inode.bi_mode),
(bch2_bkey_val_to_text(&PBUF(buf), c,
- BTREE_ID_DIRENTS,
k), buf))) {
- ret = bch2_btree_delete_at(iter, 0);
+ ret = bch2_btree_delete_at(&trans, iter, 0);
if (ret)
goto err;
continue;
}
if (w.first_this_inode && w.have_inode)
- hash_check_set_inode(&h, c, &w.inode);
+ hash_check_set_inode(&trans, &h, &w.inode);
- ret = check_dirent_hash(&h, c, iter, &k);
+ ret = check_dirent_hash(&trans, &h, iter, &k);
if (ret > 0) {
ret = 0;
continue;
if (ret)
goto fsck_err;
- if (k.k->type != BCH_DIRENT)
+ if (k.k->type != KEY_TYPE_dirent)
continue;
d = bkey_s_c_to_dirent(k);
".. dirent") ||
fsck_err_on(memchr(d.v->d_name, '/', name_len), c,
"dirent name has invalid chars")) {
- ret = remove_dirent(c, iter, d);
+ ret = remove_dirent(&trans, d);
if (ret)
goto err;
continue;
if (fsck_err_on(d_inum == d.k->p.inode, c,
"dirent points to own directory:\n%s",
(bch2_bkey_val_to_text(&PBUF(buf), c,
- BTREE_ID_DIRENTS,
k), buf))) {
- ret = remove_dirent(c, iter, d);
+ ret = remove_dirent(&trans, d);
if (ret)
goto err;
continue;
}
- ret = bch2_inode_find_by_inum(c, d_inum, &target);
+ ret = bch2_inode_find_by_inum_trans(&trans, d_inum, &target);
if (ret && ret != -ENOENT)
break;
if (fsck_err_on(!have_target, c,
"dirent points to missing inode:\n%s",
(bch2_bkey_val_to_text(&PBUF(buf), c,
- BTREE_ID_DIRENTS,
k), buf))) {
- ret = remove_dirent(c, iter, d);
+ ret = remove_dirent(&trans, d);
if (ret)
goto err;
continue;
"incorrect d_type: should be %u:\n%s",
mode_to_type(target.bi_mode),
(bch2_bkey_val_to_text(&PBUF(buf), c,
- BTREE_ID_DIRENTS,
k), buf))) {
struct bkey_i_dirent *n;
bkey_reassemble(&n->k_i, d.s_c);
n->v.d_type = mode_to_type(target.bi_mode);
- ret = bch2_btree_insert_at(c, NULL, NULL,
- BTREE_INSERT_NOFAIL,
- BTREE_INSERT_ENTRY(iter, &n->k_i));
+ bch2_trans_update(&trans, iter, &n->k_i);
+
+ ret = bch2_trans_commit(&trans, NULL, NULL,
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_LAZY_RW);
kfree(n);
if (ret)
goto err;
}
}
+
+ hash_stop_chain(&trans, &h);
err:
fsck_err:
+ if (ret == -EINTR)
+ goto retry;
+
return bch2_trans_exit(&trans) ?: ret;
}
bch_verbose(c, "checking xattrs");
- bch2_trans_init(&trans, c);
+ hash_check_init(&h);
- bch2_trans_preload_iters(&trans);
+ bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
iter = bch2_trans_get_iter(&trans, BTREE_ID_XATTRS,
POS(BCACHEFS_ROOT_INO, 0), 0);
-
- hash_check_init(bch2_xattr_hash_desc, &trans, &h);
-
- for_each_btree_key_continue(iter, 0, k) {
- ret = walk_inode(c, &w, k.k->p.inode);
+retry:
+ for_each_btree_key_continue(iter, 0, k, ret) {
+ ret = walk_inode(&trans, &w, k.k->p.inode);
if (ret)
break;
if (fsck_err_on(!w.have_inode, c,
"xattr for missing inode %llu",
k.k->p.inode)) {
- ret = bch2_btree_delete_at(iter, 0);
+ ret = bch2_btree_delete_at(&trans, iter, 0);
if (ret)
goto err;
continue;
}
if (w.first_this_inode && w.have_inode)
- hash_check_set_inode(&h, c, &w.inode);
+ hash_check_set_inode(&trans, &h, &w.inode);
- ret = hash_check_key(bch2_xattr_hash_desc, &h, c, iter, k);
+ ret = hash_check_key(&trans, bch2_xattr_hash_desc,
+ &h, iter, k);
if (ret)
goto fsck_err;
}
err:
fsck_err:
+ if (ret == -EINTR)
+ goto retry;
return bch2_trans_exit(&trans) ?: ret;
}
fsck_err:
return ret;
create_root:
- bch2_inode_init(c, root_inode, 0, 0, S_IFDIR|S_IRWXU|S_IRUGO|S_IXUGO,
+ bch2_inode_init(c, root_inode, 0, 0, S_IFDIR|0755,
0, NULL);
root_inode->bi_inum = BCACHEFS_ROOT_INO;
bch2_inode_pack(&packed, root_inode);
return bch2_btree_insert(c, BTREE_ID_INODES, &packed.inode.k_i,
- NULL, NULL, BTREE_INSERT_NOFAIL);
+ NULL, NULL,
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_LAZY_RW);
}
/* Get lost+found, create if it doesn't exist: */
struct qstr lostfound = QSTR("lost+found");
struct bch_hash_info root_hash_info =
bch2_hash_info_init(c, root_inode);
- struct bkey_inode_buf packed;
u64 inum;
int ret;
fsck_err:
return ret;
create_lostfound:
- root_inode->bi_nlink++;
-
- bch2_inode_pack(&packed, root_inode);
-
- ret = bch2_btree_insert(c, BTREE_ID_INODES, &packed.inode.k_i,
- NULL, NULL, BTREE_INSERT_NOFAIL);
- if (ret)
- return ret;
-
- bch2_inode_init(c, lostfound_inode, 0, 0, S_IFDIR|S_IRWXU|S_IRUGO|S_IXUGO,
- 0, root_inode);
-
- ret = bch2_inode_create(c, lostfound_inode, BLOCKDEV_INODE_MAX, 0,
- &c->unused_inode_hint);
- if (ret)
- return ret;
-
- ret = bch2_dirent_create(c, BCACHEFS_ROOT_INO, &root_hash_info, DT_DIR,
- &lostfound, lostfound_inode->bi_inum, NULL,
- BTREE_INSERT_NOFAIL);
+ bch2_inode_init_early(c, lostfound_inode);
+
+ ret = bch2_trans_do(c, NULL,
+ BTREE_INSERT_ATOMIC|
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_LAZY_RW,
+ bch2_create_trans(&trans,
+ BCACHEFS_ROOT_INO, root_inode,
+ lostfound_inode, &lostfound,
+ 0, 0, S_IFDIR|0700, 0, NULL, NULL));
if (ret)
- return ret;
+ bch_err(c, "error creating lost+found: %i", ret);
- return 0;
+ return ret;
}
struct inode_bitmap {
struct inode_bitmap dirs_done = { NULL, 0 };
struct pathbuf path = { 0, 0, NULL };
struct pathbuf_entry *e;
- struct btree_iter iter;
+ struct btree_trans trans;
+ struct btree_iter *iter;
struct bkey_s_c k;
struct bkey_s_c_dirent dirent;
bool had_unreachable;
u64 d_inum;
int ret = 0;
+ bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
+
bch_verbose(c, "checking directory structure");
/* DFS: */
}
ret = path_down(&path, BCACHEFS_ROOT_INO);
- if (ret) {
- return ret;
- }
+ if (ret)
+ goto err;
while (path.nr) {
next:
if (e->offset == U64_MAX)
goto up;
- for_each_btree_key(&iter, c, BTREE_ID_DIRENTS,
- POS(e->inum, e->offset + 1), 0, k) {
+ for_each_btree_key(&trans, iter, BTREE_ID_DIRENTS,
+ POS(e->inum, e->offset + 1), 0, k, ret) {
if (k.k->p.inode != e->inum)
break;
e->offset = k.k->p.offset;
- if (k.k->type != BCH_DIRENT)
+ if (k.k->type != KEY_TYPE_dirent)
continue;
dirent = bkey_s_c_to_dirent(k);
if (fsck_err_on(inode_bitmap_test(&dirs_done, d_inum), c,
"directory %llu has multiple hardlinks",
d_inum)) {
- ret = remove_dirent(c, &iter, dirent);
+ ret = remove_dirent(&trans, dirent);
if (ret)
goto err;
continue;
goto err;
}
- bch2_btree_iter_unlock(&iter);
+ ret = bch2_trans_iter_free(&trans, iter);
+ if (ret) {
+ bch_err(c, "btree error %i in fsck", ret);
+ goto err;
+ }
goto next;
}
- ret = bch2_btree_iter_unlock(&iter);
+ ret = bch2_trans_iter_free(&trans, iter) ?: ret;
if (ret) {
bch_err(c, "btree error %i in fsck", ret);
goto err;
path.nr--;
}
- for_each_btree_key(&iter, c, BTREE_ID_INODES, POS_MIN, 0, k) {
- if (k.k->type != BCH_INODE_FS)
+ iter = bch2_trans_get_iter(&trans, BTREE_ID_INODES, POS_MIN, 0);
+retry:
+ for_each_btree_key_continue(iter, 0, k, ret) {
+ if (k.k->type != KEY_TYPE_inode)
continue;
if (!S_ISDIR(le16_to_cpu(bkey_s_c_to_inode(k).v->bi_mode)))
continue;
- if (!bch2_empty_dir(c, k.k->p.inode))
+ ret = bch2_empty_dir_trans(&trans, k.k->p.inode);
+ if (ret == -EINTR)
+ goto retry;
+ if (!ret)
continue;
if (fsck_err_on(!inode_bitmap_test(&dirs_done, k.k->p.inode), c,
"unreachable directory found (inum %llu)",
k.k->p.inode)) {
- bch2_btree_iter_unlock(&iter);
+ bch2_trans_unlock(&trans);
ret = reattach_inode(c, lostfound_inode, k.k->p.inode);
if (ret) {
had_unreachable = true;
}
}
- ret = bch2_btree_iter_unlock(&iter);
+ bch2_trans_iter_free(&trans, iter);
if (ret)
goto err;
memset(&path, 0, sizeof(path));
goto restart_dfs;
}
-
-out:
+err:
+fsck_err:
+ ret = bch2_trans_exit(&trans) ?: ret;
kfree(dirs_done.bits);
kfree(path.entries);
return ret;
-err:
-fsck_err:
- ret = bch2_btree_iter_unlock(&iter) ?: ret;
- goto out;
}
struct nlink {
link = genradix_ptr_alloc(links, inum - range_start, GFP_KERNEL);
if (!link) {
- bch_verbose(c, "allocation failed during fs gc - will need another pass");
+ bch_verbose(c, "allocation failed during fsck - will need another pass");
*range_end = inum;
return;
}
static int bch2_gc_walk_dirents(struct bch_fs *c, nlink_table *links,
u64 range_start, u64 *range_end)
{
- struct btree_iter iter;
+ struct btree_trans trans;
+ struct btree_iter *iter;
struct bkey_s_c k;
struct bkey_s_c_dirent d;
u64 d_inum;
int ret;
+ bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
+
inc_link(c, links, range_start, range_end, BCACHEFS_ROOT_INO, false);
- for_each_btree_key(&iter, c, BTREE_ID_DIRENTS, POS_MIN, 0, k) {
+ for_each_btree_key(&trans, iter, BTREE_ID_DIRENTS, POS_MIN, 0, k, ret) {
switch (k.k->type) {
- case BCH_DIRENT:
+ case KEY_TYPE_dirent:
d = bkey_s_c_to_dirent(k);
d_inum = le64_to_cpu(d.v->d_inum);
break;
}
- bch2_btree_iter_cond_resched(&iter);
+ bch2_trans_cond_resched(&trans);
}
- ret = bch2_btree_iter_unlock(&iter);
+ ret = bch2_trans_exit(&trans) ?: ret;
if (ret)
- bch_err(c, "error in fs gc: btree error %i while walking dirents", ret);
+ bch_err(c, "error in fsck: btree error %i while walking dirents", ret);
return ret;
}
-s64 bch2_count_inode_sectors(struct bch_fs *c, u64 inum)
-{
- struct btree_iter iter;
- struct bkey_s_c k;
- u64 sectors = 0;
-
- for_each_btree_key(&iter, c, BTREE_ID_EXTENTS, POS(inum, 0), 0, k) {
- if (k.k->p.inode != inum)
- break;
-
- if (bkey_extent_is_allocation(k.k))
- sectors += k.k->size;
- }
-
- return bch2_btree_iter_unlock(&iter) ?: sectors;
-}
-
static int check_inode_nlink(struct bch_fs *c,
struct bch_inode_unpacked *lostfound_inode,
struct bch_inode_unpacked *u,
struct nlink *link,
bool *do_update)
{
- u32 i_nlink = u->bi_flags & BCH_INODE_UNLINKED
- ? 0
- : u->bi_nlink + nlink_bias(u->bi_mode);
+ u32 i_nlink = bch2_inode_nlink_get(u);
u32 real_i_nlink =
link->count * nlink_bias(u->bi_mode) +
link->dir_count;
u->bi_inum, i_nlink, real_i_nlink);
set_i_nlink:
if (i_nlink != real_i_nlink) {
- if (real_i_nlink) {
- u->bi_nlink = real_i_nlink - nlink_bias(u->bi_mode);
- u->bi_flags &= ~BCH_INODE_UNLINKED;
- } else {
- u->bi_nlink = 0;
- u->bi_flags |= BCH_INODE_UNLINKED;
- }
-
+ bch2_inode_nlink_set(u, real_i_nlink);
*do_update = true;
}
fsck_err:
return ret;
}
-static int check_inode(struct bch_fs *c,
+static int check_inode(struct btree_trans *trans,
struct bch_inode_unpacked *lostfound_inode,
struct btree_iter *iter,
struct bkey_s_c_inode inode,
struct nlink *link)
{
+ struct bch_fs *c = trans->c;
struct bch_inode_unpacked u;
bool do_update = false;
int ret = 0;
ret = bch2_inode_unpack(inode, &u);
+
+ bch2_trans_unlock(trans);
+
if (bch2_fs_inconsistent_on(ret, c,
"error unpacking inode %llu in fsck",
inode.k->p.inode))
return ret;
}
- if (u.bi_flags & BCH_INODE_UNLINKED) {
+ if (u.bi_flags & BCH_INODE_UNLINKED &&
+ (!c->sb.clean ||
+ fsck_err(c, "filesystem marked clean, but inode %llu unlinked",
+ u.bi_inum))) {
bch_verbose(c, "deleting inode %llu", u.bi_inum);
ret = bch2_inode_rm(c, u.bi_inum);
if (ret)
- bch_err(c, "error in fs gc: error %i "
- "while deleting inode", ret);
+ bch_err(c, "error in fsck: error %i while deleting inode", ret);
return ret;
}
- if (u.bi_flags & BCH_INODE_I_SIZE_DIRTY) {
- fsck_err_on(c->sb.clean, c,
- "filesystem marked clean, "
- "but inode %llu has i_size dirty",
- u.bi_inum);
-
+ if (u.bi_flags & BCH_INODE_I_SIZE_DIRTY &&
+ (!c->sb.clean ||
+ fsck_err(c, "filesystem marked clean, but inode %llu has i_size dirty",
+ u.bi_inum))) {
bch_verbose(c, "truncating inode %llu", u.bi_inum);
/*
ret = bch2_inode_truncate(c, u.bi_inum, u.bi_size);
if (ret) {
- bch_err(c, "error in fs gc: error %i "
- "truncating inode", ret);
+ bch_err(c, "error in fsck: error %i truncating inode", ret);
return ret;
}
do_update = true;
}
- if (u.bi_flags & BCH_INODE_I_SECTORS_DIRTY) {
+ if (u.bi_flags & BCH_INODE_I_SECTORS_DIRTY &&
+ (!c->sb.clean ||
+ fsck_err(c, "filesystem marked clean, but inode %llu has i_sectors dirty",
+ u.bi_inum))) {
s64 sectors;
- fsck_err_on(c->sb.clean, c,
- "filesystem marked clean, "
- "but inode %llu has i_sectors dirty",
- u.bi_inum);
-
bch_verbose(c, "recounting sectors for inode %llu",
u.bi_inum);
- sectors = bch2_count_inode_sectors(c, u.bi_inum);
+ sectors = bch2_count_inode_sectors(trans, u.bi_inum);
if (sectors < 0) {
- bch_err(c, "error in fs gc: error %i "
- "recounting inode sectors",
+ bch_err(c, "error in fsck: error %i recounting inode sectors",
(int) sectors);
return sectors;
}
struct bkey_inode_buf p;
bch2_inode_pack(&p, &u);
+ bch2_trans_update(trans, iter, &p.inode.k_i);
- ret = bch2_btree_insert_at(c, NULL, NULL,
- BTREE_INSERT_NOFAIL,
- BTREE_INSERT_ENTRY(iter, &p.inode.k_i));
+ ret = bch2_trans_commit(trans, NULL, NULL,
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_LAZY_RW);
if (ret && ret != -EINTR)
- bch_err(c, "error in fs gc: error %i "
+ bch_err(c, "error in fsck: error %i "
"updating inode", ret);
}
fsck_err:
nlink_table *links,
u64 range_start, u64 range_end)
{
- struct btree_iter iter;
+ struct btree_trans trans;
+ struct btree_iter *iter;
struct bkey_s_c k;
struct nlink *link, zero_links = { 0, 0 };
struct genradix_iter nlinks_iter;
int ret = 0, ret2 = 0;
u64 nlinks_pos;
- bch2_btree_iter_init(&iter, c, BTREE_ID_INODES, POS(range_start, 0), 0);
+ bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
+
+ iter = bch2_trans_get_iter(&trans, BTREE_ID_INODES,
+ POS(range_start, 0), 0);
nlinks_iter = genradix_iter_init(links, 0);
- while ((k = bch2_btree_iter_peek(&iter)).k &&
- !btree_iter_err(k)) {
+ while ((k = bch2_btree_iter_peek(iter)).k &&
+ !(ret2 = bkey_err(k))) {
peek_nlinks: link = genradix_iter_peek(&nlinks_iter, links);
- if (!link && (!k.k || iter.pos.inode >= range_end))
+ if (!link && (!k.k || iter->pos.inode >= range_end))
break;
nlinks_pos = range_start + nlinks_iter.pos;
- if (iter.pos.inode > nlinks_pos) {
+ if (iter->pos.inode > nlinks_pos) {
/* Should have been caught by dirents pass: */
need_fsck_err_on(link && link->count, c,
"missing inode %llu (nlink %u)",
goto peek_nlinks;
}
- if (iter.pos.inode < nlinks_pos || !link)
+ if (iter->pos.inode < nlinks_pos || !link)
link = &zero_links;
- if (k.k && k.k->type == BCH_INODE_FS) {
- /*
- * Avoid potential deadlocks with iter for
- * truncate/rm/etc.:
- */
- bch2_btree_iter_unlock(&iter);
-
- ret = check_inode(c, lostfound_inode, &iter,
+ if (k.k && k.k->type == KEY_TYPE_inode) {
+ ret = check_inode(&trans, lostfound_inode, iter,
bkey_s_c_to_inode(k), link);
BUG_ON(ret == -EINTR);
if (ret)
break;
-
- if (link->count)
- atomic_long_inc(&c->nr_inodes);
} else {
/* Should have been caught by dirents pass: */
need_fsck_err_on(link->count, c,
nlinks_pos, link->count);
}
- if (nlinks_pos == iter.pos.inode)
+ if (nlinks_pos == iter->pos.inode)
genradix_iter_advance(&nlinks_iter, links);
- bch2_btree_iter_next(&iter);
- bch2_btree_iter_cond_resched(&iter);
+ bch2_btree_iter_next(iter);
+ bch2_trans_cond_resched(&trans);
}
fsck_err:
- ret2 = bch2_btree_iter_unlock(&iter);
+ bch2_trans_exit(&trans);
+
if (ret2)
- bch_err(c, "error in fs gc: btree error %i while walking inodes", ret2);
+ bch_err(c, "error in fsck: btree error %i while walking inodes", ret2);
return ret ?: ret2;
}
return ret;
}
-noinline_for_stack
-static int check_inodes_fast(struct bch_fs *c)
-{
- struct btree_iter iter;
- struct bkey_s_c k;
- struct bkey_s_c_inode inode;
- unsigned long nr_inodes = 0;
- int ret = 0;
-
- for_each_btree_key(&iter, c, BTREE_ID_INODES, POS_MIN, 0, k) {
- if (k.k->type != BCH_INODE_FS)
- continue;
-
- inode = bkey_s_c_to_inode(k);
-
- if (!(inode.v->bi_flags & BCH_INODE_UNLINKED))
- nr_inodes++;
-
- if (inode.v->bi_flags &
- (BCH_INODE_I_SIZE_DIRTY|
- BCH_INODE_I_SECTORS_DIRTY|
- BCH_INODE_UNLINKED)) {
- fsck_err_on(c->sb.clean, c,
- "filesystem marked clean but found inode %llu with flags %x",
- inode.k->p.inode, inode.v->bi_flags);
- ret = check_inode(c, NULL, &iter, inode, NULL);
- BUG_ON(ret == -EINTR);
- if (ret)
- break;
- }
- }
- atomic_long_set(&c->nr_inodes, nr_inodes);
-fsck_err:
- return bch2_btree_iter_unlock(&iter) ?: ret;
-}
-
/*
* Checks for inconsistencies that shouldn't happen, unless we have a bug.
* Doesn't fix them yet, mainly because they haven't yet been observed:
*/
-static int bch2_fsck_full(struct bch_fs *c)
+int bch2_fsck_full(struct bch_fs *c)
{
struct bch_inode_unpacked root_inode, lostfound_inode;
- int ret;
- bch_verbose(c, "starting fsck:");
- ret = check_extents(c) ?:
+ return check_extents(c) ?:
check_dirents(c) ?:
check_xattrs(c) ?:
check_root(c, &root_inode) ?:
check_lostfound(c, &root_inode, &lostfound_inode) ?:
check_directory_structure(c, &lostfound_inode) ?:
check_inode_nlinks(c, &lostfound_inode);
-
- bch2_flush_fsck_errs(c);
- bch_verbose(c, "fsck done");
-
- return ret;
}
-static int bch2_fsck_inode_nlink(struct bch_fs *c)
+int bch2_fsck_inode_nlink(struct bch_fs *c)
{
struct bch_inode_unpacked root_inode, lostfound_inode;
- int ret;
- bch_verbose(c, "checking inode link counts:");
- ret = check_root(c, &root_inode) ?:
+ return check_root(c, &root_inode) ?:
check_lostfound(c, &root_inode, &lostfound_inode) ?:
check_inode_nlinks(c, &lostfound_inode);
-
- bch2_flush_fsck_errs(c);
- bch_verbose(c, "done");
-
- return ret;
}
-static int bch2_fsck_walk_inodes_only(struct bch_fs *c)
+int bch2_fsck_walk_inodes_only(struct bch_fs *c)
{
+ struct btree_trans trans;
+ struct btree_iter *iter;
+ struct bkey_s_c k;
+ struct bkey_s_c_inode inode;
int ret;
- bch_verbose(c, "walking inodes:");
- ret = check_inodes_fast(c);
-
- bch2_flush_fsck_errs(c);
- bch_verbose(c, "done");
+ bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
- return ret;
-}
+ for_each_btree_key(&trans, iter, BTREE_ID_INODES, POS_MIN, 0, k, ret) {
+ if (k.k->type != KEY_TYPE_inode)
+ continue;
-int bch2_fsck(struct bch_fs *c)
-{
- if (c->opts.fsck)
- return bch2_fsck_full(c);
+ inode = bkey_s_c_to_inode(k);
- if (!c->sb.clean &&
- !(c->sb.features & (1 << BCH_FEATURE_ATOMIC_NLINK)))
- return bch2_fsck_inode_nlink(c);
+ if (inode.v->bi_flags &
+ (BCH_INODE_I_SIZE_DIRTY|
+ BCH_INODE_I_SECTORS_DIRTY|
+ BCH_INODE_UNLINKED)) {
+ ret = check_inode(&trans, NULL, iter, inode, NULL);
+ BUG_ON(ret == -EINTR);
+ if (ret)
+ break;
+ }
+ }
+ BUG_ON(ret == -EINTR);
- return bch2_fsck_walk_inodes_only(c);
+ return bch2_trans_exit(&trans) ?: ret;
}
projects / bcachefs-tools-debian / blobdiff