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-rw-r--r--fs/bcachefs/fs.c109
1 files changed, 60 insertions, 49 deletions
diff --git a/fs/bcachefs/fs.c b/fs/bcachefs/fs.c
index 65b04b3c2679..fd851f10d11c 100644
--- a/fs/bcachefs/fs.c
+++ b/fs/bcachefs/fs.c
@@ -90,7 +90,7 @@ retry:
bch2_trans_begin(trans);
ret = bch2_inode_peek(trans, &iter, &inode_u, inode_inum(inode),
- BTREE_ITER_INTENT) ?:
+ BTREE_ITER_intent) ?:
(set ? set(trans, inode, &inode_u, p) : 0) ?:
bch2_inode_write(trans, &iter, &inode_u) ?:
bch2_trans_commit(trans, NULL, NULL, BCH_TRANS_COMMIT_no_enospc);
@@ -213,19 +213,43 @@ static struct bch_inode_info *bch2_inode_insert(struct bch_fs *c, struct bch_ino
_ret; \
})
+static struct inode *bch2_alloc_inode(struct super_block *sb)
+{
+ BUG();
+}
+
+static struct bch_inode_info *__bch2_new_inode(struct bch_fs *c)
+{
+ struct bch_inode_info *inode = kmem_cache_alloc(bch2_inode_cache, GFP_NOFS);
+ if (!inode)
+ return NULL;
+
+ inode_init_once(&inode->v);
+ mutex_init(&inode->ei_update_lock);
+ two_state_lock_init(&inode->ei_pagecache_lock);
+ INIT_LIST_HEAD(&inode->ei_vfs_inode_list);
+ mutex_init(&inode->ei_quota_lock);
+ inode->v.i_state = 0;
+
+ if (unlikely(inode_init_always(c->vfs_sb, &inode->v))) {
+ kmem_cache_free(bch2_inode_cache, inode);
+ return NULL;
+ }
+
+ return inode;
+}
+
/*
* Allocate a new inode, dropping/retaking btree locks if necessary:
*/
static struct bch_inode_info *bch2_new_inode(struct btree_trans *trans)
{
- struct bch_fs *c = trans->c;
-
struct bch_inode_info *inode =
memalloc_flags_do(PF_MEMALLOC_NORECLAIM|PF_MEMALLOC_NOWARN,
- to_bch_ei(new_inode(c->vfs_sb)));
+ __bch2_new_inode(trans->c));
if (unlikely(!inode)) {
- int ret = drop_locks_do(trans, (inode = to_bch_ei(new_inode(c->vfs_sb))) ? 0 : -ENOMEM);
+ int ret = drop_locks_do(trans, (inode = __bch2_new_inode(trans->c)) ? 0 : -ENOMEM);
if (ret && inode) {
__destroy_inode(&inode->v);
kmem_cache_free(bch2_inode_cache, inode);
@@ -290,7 +314,7 @@ __bch2_create(struct mnt_idmap *idmap,
if (ret)
return ERR_PTR(ret);
#endif
- inode = to_bch_ei(new_inode(c->vfs_sb));
+ inode = __bch2_new_inode(c);
if (unlikely(!inode)) {
inode = ERR_PTR(-ENOMEM);
goto err;
@@ -323,7 +347,7 @@ retry:
inum.inum = inode_u.bi_inum;
ret = bch2_subvolume_get(trans, inum.subvol, true,
- BTREE_ITER_WITH_UPDATES, &subvol) ?:
+ BTREE_ITER_with_updates, &subvol) ?:
bch2_trans_commit(trans, NULL, &journal_seq, 0);
if (unlikely(ret)) {
bch2_quota_acct(c, bch_qid(&inode_u), Q_INO, -1,
@@ -376,17 +400,14 @@ static struct bch_inode_info *bch2_lookup_trans(struct btree_trans *trans,
struct bch_fs *c = trans->c;
struct btree_iter dirent_iter = {};
subvol_inum inum = {};
+ struct printbuf buf = PRINTBUF;
- int ret = bch2_hash_lookup(trans, &dirent_iter, bch2_dirent_hash_desc,
- dir_hash_info, dir, name, 0);
+ struct bkey_s_c k = bch2_hash_lookup(trans, &dirent_iter, bch2_dirent_hash_desc,
+ dir_hash_info, dir, name, 0);
+ int ret = bkey_err(k);
if (ret)
return ERR_PTR(ret);
- struct bkey_s_c k = bch2_btree_iter_peek_slot(&dirent_iter);
- ret = bkey_err(k);
- if (ret)
- goto err;
-
ret = bch2_dirent_read_target(trans, dir, bkey_s_c_to_dirent(k), &inum);
if (ret > 0)
ret = -ENOENT;
@@ -406,20 +427,31 @@ static struct bch_inode_info *bch2_lookup_trans(struct btree_trans *trans,
ret = bch2_subvolume_get(trans, inum.subvol, true, 0, &subvol) ?:
bch2_inode_find_by_inum_nowarn_trans(trans, inum, &inode_u) ?:
PTR_ERR_OR_ZERO(inode = bch2_new_inode(trans));
- if (bch2_err_matches(ret, ENOENT)) {
- struct printbuf buf = PRINTBUF;
- bch2_bkey_val_to_text(&buf, c, k);
- bch_err(c, "%s points to missing inode", buf.buf);
- printbuf_exit(&buf);
- }
+ bch2_fs_inconsistent_on(bch2_err_matches(ret, ENOENT),
+ c, "dirent to missing inode:\n %s",
+ (bch2_bkey_val_to_text(&buf, c, k), buf.buf));
if (ret)
goto err;
+ /* regular files may have hardlinks: */
+ if (bch2_fs_inconsistent_on(bch2_inode_should_have_bp(&inode_u) &&
+ !bkey_eq(k.k->p, POS(inode_u.bi_dir, inode_u.bi_dir_offset)),
+ c,
+ "dirent points to inode that does not point back:\n %s",
+ (bch2_bkey_val_to_text(&buf, c, k),
+ prt_printf(&buf, "\n "),
+ bch2_inode_unpacked_to_text(&buf, &inode_u),
+ buf.buf))) {
+ ret = -ENOENT;
+ goto err;
+ }
+
bch2_vfs_inode_init(trans, inum, inode, &inode_u, &subvol);
inode = bch2_inode_insert(c, inode);
out:
bch2_trans_iter_exit(trans, &dirent_iter);
+ printbuf_exit(&buf);
return inode;
err:
inode = ERR_PTR(ret);
@@ -787,7 +819,7 @@ retry:
acl = NULL;
ret = bch2_inode_peek(trans, &inode_iter, &inode_u, inode_inum(inode),
- BTREE_ITER_INTENT);
+ BTREE_ITER_intent);
if (ret)
goto btree_err;
@@ -1043,6 +1075,10 @@ retry:
bch2_btree_iter_set_pos(&iter,
POS(iter.pos.inode, iter.pos.offset + sectors));
+
+ ret = bch2_trans_relock(trans);
+ if (ret)
+ break;
}
start = iter.pos.offset;
bch2_trans_iter_exit(trans, &iter);
@@ -1490,34 +1526,9 @@ static void bch2_vfs_inode_init(struct btree_trans *trans, subvol_inum inum,
mapping_set_large_folios(inode->v.i_mapping);
}
-static struct inode *bch2_alloc_inode(struct super_block *sb)
-{
- struct bch_inode_info *inode;
-
- inode = kmem_cache_alloc(bch2_inode_cache, GFP_NOFS);
- if (!inode)
- return NULL;
-
- inode_init_once(&inode->v);
- mutex_init(&inode->ei_update_lock);
- two_state_lock_init(&inode->ei_pagecache_lock);
- INIT_LIST_HEAD(&inode->ei_vfs_inode_list);
- mutex_init(&inode->ei_quota_lock);
-
- return &inode->v;
-}
-
-static void bch2_i_callback(struct rcu_head *head)
-{
- struct inode *vinode = container_of(head, struct inode, i_rcu);
- struct bch_inode_info *inode = to_bch_ei(vinode);
-
- kmem_cache_free(bch2_inode_cache, inode);
-}
-
-static void bch2_destroy_inode(struct inode *vinode)
+static void bch2_free_inode(struct inode *vinode)
{
- call_rcu(&vinode->i_rcu, bch2_i_callback);
+ kmem_cache_free(bch2_inode_cache, to_bch_ei(vinode));
}
static int inode_update_times_fn(struct btree_trans *trans,
@@ -1825,7 +1836,7 @@ static int bch2_unfreeze(struct super_block *sb)
static const struct super_operations bch_super_operations = {
.alloc_inode = bch2_alloc_inode,
- .destroy_inode = bch2_destroy_inode,
+ .free_inode = bch2_free_inode,
.write_inode = bch2_vfs_write_inode,
.evict_inode = bch2_evict_inode,
.sync_fs = bch2_sync_fs,
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 07:55:19 +0100