Merge branch 'work.mkdir' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs icache updates from Al Viro:
- NFS mkdir/open_by_handle race fix
- analogous solution for FUSE, replacing the one currently in mainline
- new primitive to be used when discarding halfway set up inodes on
failed object creation; gives sane warranties re icache lookups not
returning such doomed by still not freed inodes. A bunch of
filesystems switched to that animal.
- Miklos' fix for last cycle regression in iget5_locked(); -stable will
need a slightly different variant, unfortunately.
- misc bits and pieces around things icache-related (in adfs and jfs).
* 'work.mkdir' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
jfs: don't bother with make_bad_inode() in ialloc()
adfs: don't put inodes into icache
new helper: inode_fake_hash()
vfs: don't evict uninitialized inode
jfs: switch to discard_new_inode()
ext2: make sure that partially set up inodes won't be returned by ext2_iget()
udf: switch to discard_new_inode()
ufs: switch to discard_new_inode()
btrfs: switch to discard_new_inode()
new primitive: discard_new_inode()
kill d_instantiate_no_diralias()
nfs_instantiate(): prevent multiple aliases for directory inode
diff --git a/fs/adfs/inode.c b/fs/adfs/inode.c
index c836c42..e91028d 100644
--- a/fs/adfs/inode.c
+++ b/fs/adfs/inode.c
@@ -287,7 +287,7 @@
ADFS_I(inode)->mmu_private = inode->i_size;
}
- insert_inode_hash(inode);
+ inode_fake_hash(inode);
out:
return inode;
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 71fa525..7e099a7 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -291,6 +291,7 @@
static const struct super_operations adfs_sops = {
.alloc_inode = adfs_alloc_inode,
.destroy_inode = adfs_destroy_inode,
+ .drop_inode = generic_delete_inode,
.write_inode = adfs_write_inode,
.put_super = adfs_put_super,
.statfs = adfs_statfs,
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index eba61bc..def3ada 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6335,8 +6335,10 @@
location->type = BTRFS_INODE_ITEM_KEY;
ret = btrfs_insert_inode_locked(inode);
- if (ret < 0)
+ if (ret < 0) {
+ iput(inode);
goto fail;
+ }
path->leave_spinning = 1;
ret = btrfs_insert_empty_items(trans, root, path, key, sizes, nitems);
@@ -6395,12 +6397,11 @@
return inode;
fail_unlock:
- unlock_new_inode(inode);
+ discard_new_inode(inode);
fail:
if (dir && name)
BTRFS_I(dir)->index_cnt--;
btrfs_free_path(path);
- iput(inode);
return ERR_PTR(ret);
}
@@ -6505,7 +6506,6 @@
struct btrfs_root *root = BTRFS_I(dir)->root;
struct inode *inode = NULL;
int err;
- int drop_inode = 0;
u64 objectid;
u64 index = 0;
@@ -6527,6 +6527,7 @@
mode, &index);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
+ inode = NULL;
goto out_unlock;
}
@@ -6541,31 +6542,24 @@
err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err)
- goto out_unlock_inode;
+ goto out_unlock;
err = btrfs_add_nondir(trans, BTRFS_I(dir), dentry, BTRFS_I(inode),
0, index);
- if (err) {
- goto out_unlock_inode;
- } else {
- btrfs_update_inode(trans, root, inode);
- d_instantiate_new(dentry, inode);
- }
+ if (err)
+ goto out_unlock;
+
+ btrfs_update_inode(trans, root, inode);
+ d_instantiate_new(dentry, inode);
out_unlock:
btrfs_end_transaction(trans);
btrfs_btree_balance_dirty(fs_info);
- if (drop_inode) {
+ if (err && inode) {
inode_dec_link_count(inode);
- iput(inode);
+ discard_new_inode(inode);
}
return err;
-
-out_unlock_inode:
- drop_inode = 1;
- unlock_new_inode(inode);
- goto out_unlock;
-
}
static int btrfs_create(struct inode *dir, struct dentry *dentry,
@@ -6575,7 +6569,6 @@
struct btrfs_trans_handle *trans;
struct btrfs_root *root = BTRFS_I(dir)->root;
struct inode *inode = NULL;
- int drop_inode_on_err = 0;
int err;
u64 objectid;
u64 index = 0;
@@ -6598,9 +6591,9 @@
mode, &index);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
+ inode = NULL;
goto out_unlock;
}
- drop_inode_on_err = 1;
/*
* If the active LSM wants to access the inode during
* d_instantiate it needs these. Smack checks to see
@@ -6613,33 +6606,28 @@
err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err)
- goto out_unlock_inode;
+ goto out_unlock;
err = btrfs_update_inode(trans, root, inode);
if (err)
- goto out_unlock_inode;
+ goto out_unlock;
err = btrfs_add_nondir(trans, BTRFS_I(dir), dentry, BTRFS_I(inode),
0, index);
if (err)
- goto out_unlock_inode;
+ goto out_unlock;
BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops;
d_instantiate_new(dentry, inode);
out_unlock:
btrfs_end_transaction(trans);
- if (err && drop_inode_on_err) {
+ if (err && inode) {
inode_dec_link_count(inode);
- iput(inode);
+ discard_new_inode(inode);
}
btrfs_btree_balance_dirty(fs_info);
return err;
-
-out_unlock_inode:
- unlock_new_inode(inode);
- goto out_unlock;
-
}
static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
@@ -6748,6 +6736,7 @@
S_IFDIR | mode, &index);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
+ inode = NULL;
goto out_fail;
}
@@ -6758,34 +6747,30 @@
err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err)
- goto out_fail_inode;
+ goto out_fail;
btrfs_i_size_write(BTRFS_I(inode), 0);
err = btrfs_update_inode(trans, root, inode);
if (err)
- goto out_fail_inode;
+ goto out_fail;
err = btrfs_add_link(trans, BTRFS_I(dir), BTRFS_I(inode),
dentry->d_name.name,
dentry->d_name.len, 0, index);
if (err)
- goto out_fail_inode;
+ goto out_fail;
d_instantiate_new(dentry, inode);
drop_on_err = 0;
out_fail:
btrfs_end_transaction(trans);
- if (drop_on_err) {
+ if (err && inode) {
inode_dec_link_count(inode);
- iput(inode);
+ discard_new_inode(inode);
}
btrfs_btree_balance_dirty(fs_info);
return err;
-
-out_fail_inode:
- unlock_new_inode(inode);
- goto out_fail;
}
static noinline int uncompress_inline(struct btrfs_path *path,
@@ -10115,7 +10100,6 @@
struct btrfs_key key;
struct inode *inode = NULL;
int err;
- int drop_inode = 0;
u64 objectid;
u64 index = 0;
int name_len;
@@ -10148,6 +10132,7 @@
objectid, S_IFLNK|S_IRWXUGO, &index);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
+ inode = NULL;
goto out_unlock;
}
@@ -10164,12 +10149,12 @@
err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err)
- goto out_unlock_inode;
+ goto out_unlock;
path = btrfs_alloc_path();
if (!path) {
err = -ENOMEM;
- goto out_unlock_inode;
+ goto out_unlock;
}
key.objectid = btrfs_ino(BTRFS_I(inode));
key.offset = 0;
@@ -10179,7 +10164,7 @@
datasize);
if (err) {
btrfs_free_path(path);
- goto out_unlock_inode;
+ goto out_unlock;
}
leaf = path->nodes[0];
ei = btrfs_item_ptr(leaf, path->slots[0],
@@ -10211,26 +10196,19 @@
if (!err)
err = btrfs_add_nondir(trans, BTRFS_I(dir), dentry,
BTRFS_I(inode), 0, index);
- if (err) {
- drop_inode = 1;
- goto out_unlock_inode;
- }
+ if (err)
+ goto out_unlock;
d_instantiate_new(dentry, inode);
out_unlock:
btrfs_end_transaction(trans);
- if (drop_inode) {
+ if (err && inode) {
inode_dec_link_count(inode);
- iput(inode);
+ discard_new_inode(inode);
}
btrfs_btree_balance_dirty(fs_info);
return err;
-
-out_unlock_inode:
- drop_inode = 1;
- unlock_new_inode(inode);
- goto out_unlock;
}
static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
@@ -10439,14 +10417,14 @@
ret = btrfs_init_inode_security(trans, inode, dir, NULL);
if (ret)
- goto out_inode;
+ goto out;
ret = btrfs_update_inode(trans, root, inode);
if (ret)
- goto out_inode;
+ goto out;
ret = btrfs_orphan_add(trans, BTRFS_I(inode));
if (ret)
- goto out_inode;
+ goto out;
/*
* We set number of links to 0 in btrfs_new_inode(), and here we set
@@ -10456,21 +10434,15 @@
* d_tmpfile() -> inode_dec_link_count() -> drop_nlink()
*/
set_nlink(inode, 1);
- unlock_new_inode(inode);
d_tmpfile(dentry, inode);
+ unlock_new_inode(inode);
mark_inode_dirty(inode);
-
out:
btrfs_end_transaction(trans);
- if (ret)
- iput(inode);
+ if (ret && inode)
+ discard_new_inode(inode);
btrfs_btree_balance_dirty(fs_info);
return ret;
-
-out_inode:
- unlock_new_inode(inode);
- goto out;
-
}
__attribute__((const))
diff --git a/fs/dcache.c b/fs/dcache.c
index ceb7b49..34226c2 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1889,40 +1889,13 @@
spin_lock(&inode->i_lock);
__d_instantiate(entry, inode);
WARN_ON(!(inode->i_state & I_NEW));
- inode->i_state &= ~I_NEW;
+ inode->i_state &= ~I_NEW & ~I_CREATING;
smp_mb();
wake_up_bit(&inode->i_state, __I_NEW);
spin_unlock(&inode->i_lock);
}
EXPORT_SYMBOL(d_instantiate_new);
-/**
- * d_instantiate_no_diralias - instantiate a non-aliased dentry
- * @entry: dentry to complete
- * @inode: inode to attach to this dentry
- *
- * Fill in inode information in the entry. If a directory alias is found, then
- * return an error (and drop inode). Together with d_materialise_unique() this
- * guarantees that a directory inode may never have more than one alias.
- */
-int d_instantiate_no_diralias(struct dentry *entry, struct inode *inode)
-{
- BUG_ON(!hlist_unhashed(&entry->d_u.d_alias));
-
- security_d_instantiate(entry, inode);
- spin_lock(&inode->i_lock);
- if (S_ISDIR(inode->i_mode) && !hlist_empty(&inode->i_dentry)) {
- spin_unlock(&inode->i_lock);
- iput(inode);
- return -EBUSY;
- }
- __d_instantiate(entry, inode);
- spin_unlock(&inode->i_lock);
-
- return 0;
-}
-EXPORT_SYMBOL(d_instantiate_no_diralias);
-
struct dentry *d_make_root(struct inode *root_inode)
{
struct dentry *res = NULL;
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index 6484199..5c3d7b7 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -611,8 +611,7 @@
dquot_drop(inode);
inode->i_flags |= S_NOQUOTA;
clear_nlink(inode);
- unlock_new_inode(inode);
- iput(inode);
+ discard_new_inode(inode);
return ERR_PTR(err);
fail:
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index 152453a..0c26dcc 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -45,8 +45,7 @@
return 0;
}
inode_dec_link_count(inode);
- unlock_new_inode(inode);
- iput(inode);
+ discard_new_inode(inode);
return err;
}
@@ -192,8 +191,7 @@
out_fail:
inode_dec_link_count(inode);
- unlock_new_inode(inode);
- iput (inode);
+ discard_new_inode(inode);
goto out;
}
@@ -261,8 +259,7 @@
out_fail:
inode_dec_link_count(inode);
inode_dec_link_count(inode);
- unlock_new_inode(inode);
- iput(inode);
+ discard_new_inode(inode);
out_dir:
inode_dec_link_count(dir);
goto out;
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index c979329..d80aab0 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -539,6 +539,7 @@
{
struct fuse_entry_out outarg;
struct inode *inode;
+ struct dentry *d;
int err;
struct fuse_forget_link *forget;
@@ -570,11 +571,17 @@
}
kfree(forget);
- err = d_instantiate_no_diralias(entry, inode);
- if (err)
- return err;
+ d_drop(entry);
+ d = d_splice_alias(inode, entry);
+ if (IS_ERR(d))
+ return PTR_ERR(d);
- fuse_change_entry_timeout(entry, &outarg);
+ if (d) {
+ fuse_change_entry_timeout(d, &outarg);
+ dput(d);
+ } else {
+ fuse_change_entry_timeout(entry, &outarg);
+ }
fuse_invalidate_attr(dir);
return 0;
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 2a16111d..a2dfa1b 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -541,7 +541,7 @@
HFS_I(inode)->rsrc_inode = dir;
HFS_I(dir)->rsrc_inode = inode;
igrab(dir);
- hlist_add_fake(&inode->i_hash);
+ inode_fake_hash(inode);
mark_inode_dirty(inode);
dont_mount(dentry);
out:
diff --git a/fs/inode.c b/fs/inode.c
index 8c86c80..a06de44 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -804,6 +804,10 @@
__wait_on_freeing_inode(inode);
goto repeat;
}
+ if (unlikely(inode->i_state & I_CREATING)) {
+ spin_unlock(&inode->i_lock);
+ return ERR_PTR(-ESTALE);
+ }
__iget(inode);
spin_unlock(&inode->i_lock);
return inode;
@@ -831,6 +835,10 @@
__wait_on_freeing_inode(inode);
goto repeat;
}
+ if (unlikely(inode->i_state & I_CREATING)) {
+ spin_unlock(&inode->i_lock);
+ return ERR_PTR(-ESTALE);
+ }
__iget(inode);
spin_unlock(&inode->i_lock);
return inode;
@@ -961,13 +969,26 @@
lockdep_annotate_inode_mutex_key(inode);
spin_lock(&inode->i_lock);
WARN_ON(!(inode->i_state & I_NEW));
- inode->i_state &= ~I_NEW;
+ inode->i_state &= ~I_NEW & ~I_CREATING;
smp_mb();
wake_up_bit(&inode->i_state, __I_NEW);
spin_unlock(&inode->i_lock);
}
EXPORT_SYMBOL(unlock_new_inode);
+void discard_new_inode(struct inode *inode)
+{
+ lockdep_annotate_inode_mutex_key(inode);
+ spin_lock(&inode->i_lock);
+ WARN_ON(!(inode->i_state & I_NEW));
+ inode->i_state &= ~I_NEW;
+ smp_mb();
+ wake_up_bit(&inode->i_state, __I_NEW);
+ spin_unlock(&inode->i_lock);
+ iput(inode);
+}
+EXPORT_SYMBOL(discard_new_inode);
+
/**
* lock_two_nondirectories - take two i_mutexes on non-directory objects
*
@@ -1029,6 +1050,7 @@
{
struct hlist_head *head = inode_hashtable + hash(inode->i_sb, hashval);
struct inode *old;
+ bool creating = inode->i_state & I_CREATING;
again:
spin_lock(&inode_hash_lock);
@@ -1039,6 +1061,8 @@
* Use the old inode instead of the preallocated one.
*/
spin_unlock(&inode_hash_lock);
+ if (IS_ERR(old))
+ return NULL;
wait_on_inode(old);
if (unlikely(inode_unhashed(old))) {
iput(old);
@@ -1060,6 +1084,8 @@
inode->i_state |= I_NEW;
hlist_add_head(&inode->i_hash, head);
spin_unlock(&inode->i_lock);
+ if (!creating)
+ inode_sb_list_add(inode);
unlock:
spin_unlock(&inode_hash_lock);
@@ -1094,12 +1120,13 @@
struct inode *inode = ilookup5(sb, hashval, test, data);
if (!inode) {
- struct inode *new = new_inode(sb);
+ struct inode *new = alloc_inode(sb);
if (new) {
+ new->i_state = 0;
inode = inode_insert5(new, hashval, test, set, data);
if (unlikely(inode != new))
- iput(new);
+ destroy_inode(new);
}
}
return inode;
@@ -1128,6 +1155,8 @@
inode = find_inode_fast(sb, head, ino);
spin_unlock(&inode_hash_lock);
if (inode) {
+ if (IS_ERR(inode))
+ return NULL;
wait_on_inode(inode);
if (unlikely(inode_unhashed(inode))) {
iput(inode);
@@ -1165,6 +1194,8 @@
*/
spin_unlock(&inode_hash_lock);
destroy_inode(inode);
+ if (IS_ERR(old))
+ return NULL;
inode = old;
wait_on_inode(inode);
if (unlikely(inode_unhashed(inode))) {
@@ -1282,7 +1313,7 @@
inode = find_inode(sb, head, test, data);
spin_unlock(&inode_hash_lock);
- return inode;
+ return IS_ERR(inode) ? NULL : inode;
}
EXPORT_SYMBOL(ilookup5_nowait);
@@ -1338,6 +1369,8 @@
spin_unlock(&inode_hash_lock);
if (inode) {
+ if (IS_ERR(inode))
+ return NULL;
wait_on_inode(inode);
if (unlikely(inode_unhashed(inode))) {
iput(inode);
@@ -1421,12 +1454,17 @@
}
if (likely(!old)) {
spin_lock(&inode->i_lock);
- inode->i_state |= I_NEW;
+ inode->i_state |= I_NEW | I_CREATING;
hlist_add_head(&inode->i_hash, head);
spin_unlock(&inode->i_lock);
spin_unlock(&inode_hash_lock);
return 0;
}
+ if (unlikely(old->i_state & I_CREATING)) {
+ spin_unlock(&old->i_lock);
+ spin_unlock(&inode_hash_lock);
+ return -EBUSY;
+ }
__iget(old);
spin_unlock(&old->i_lock);
spin_unlock(&inode_hash_lock);
@@ -1443,7 +1481,10 @@
int insert_inode_locked4(struct inode *inode, unsigned long hashval,
int (*test)(struct inode *, void *), void *data)
{
- struct inode *old = inode_insert5(inode, hashval, test, NULL, data);
+ struct inode *old;
+
+ inode->i_state |= I_CREATING;
+ old = inode_insert5(inode, hashval, test, NULL, data);
if (old != inode) {
iput(old);
diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c
index f36ef68..93e8c59 100644
--- a/fs/jfs/jfs_imap.c
+++ b/fs/jfs/jfs_imap.c
@@ -491,13 +491,7 @@
/* release the page */
release_metapage(mp);
- /*
- * __mark_inode_dirty expects inodes to be hashed. Since we don't
- * want special inodes in the fileset inode space, we make them
- * appear hashed, but do not put on any lists. hlist_del()
- * will work fine and require no locking.
- */
- hlist_add_fake(&ip->i_hash);
+ inode_fake_hash(ip);
return (ip);
}
diff --git a/fs/jfs/jfs_inode.c b/fs/jfs/jfs_inode.c
index 5e9b7bb..4572b7c 100644
--- a/fs/jfs/jfs_inode.c
+++ b/fs/jfs/jfs_inode.c
@@ -61,8 +61,7 @@
inode = new_inode(sb);
if (!inode) {
jfs_warn("ialloc: new_inode returned NULL!");
- rc = -ENOMEM;
- goto fail;
+ return ERR_PTR(-ENOMEM);
}
jfs_inode = JFS_IP(inode);
@@ -70,8 +69,6 @@
rc = diAlloc(parent, S_ISDIR(mode), inode);
if (rc) {
jfs_warn("ialloc: diAlloc returned %d!", rc);
- if (rc == -EIO)
- make_bad_inode(inode);
goto fail_put;
}
@@ -141,9 +138,10 @@
dquot_drop(inode);
inode->i_flags |= S_NOQUOTA;
clear_nlink(inode);
- unlock_new_inode(inode);
+ discard_new_inode(inode);
+ return ERR_PTR(rc);
+
fail_put:
iput(inode);
-fail:
return ERR_PTR(rc);
}
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 56c3fcb..14528c0 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -175,8 +175,7 @@
if (rc) {
free_ea_wmap(ip);
clear_nlink(ip);
- unlock_new_inode(ip);
- iput(ip);
+ discard_new_inode(ip);
} else {
d_instantiate_new(dentry, ip);
}
@@ -309,8 +308,7 @@
if (rc) {
free_ea_wmap(ip);
clear_nlink(ip);
- unlock_new_inode(ip);
- iput(ip);
+ discard_new_inode(ip);
} else {
d_instantiate_new(dentry, ip);
}
@@ -1054,8 +1052,7 @@
if (rc) {
free_ea_wmap(ip);
clear_nlink(ip);
- unlock_new_inode(ip);
- iput(ip);
+ discard_new_inode(ip);
} else {
d_instantiate_new(dentry, ip);
}
@@ -1441,8 +1438,7 @@
if (rc) {
free_ea_wmap(ip);
clear_nlink(ip);
- unlock_new_inode(ip);
- iput(ip);
+ discard_new_inode(ip);
} else {
d_instantiate_new(dentry, ip);
}
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index f085714..09da5cf 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -581,7 +581,7 @@
inode->i_ino = 0;
inode->i_size = i_size_read(sb->s_bdev->bd_inode);
inode->i_mapping->a_ops = &jfs_metapage_aops;
- hlist_add_fake(&inode->i_hash);
+ inode_fake_hash(inode);
mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
sbi->direct_inode = inode;
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index f447b1a..d7f158c 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1643,6 +1643,7 @@
struct dentry *parent = dget_parent(dentry);
struct inode *dir = d_inode(parent);
struct inode *inode;
+ struct dentry *d;
int error = -EACCES;
d_drop(dentry);
@@ -1664,10 +1665,12 @@
goto out_error;
}
inode = nfs_fhget(dentry->d_sb, fhandle, fattr, label);
- error = PTR_ERR(inode);
- if (IS_ERR(inode))
+ d = d_splice_alias(inode, dentry);
+ if (IS_ERR(d)) {
+ error = PTR_ERR(d);
goto out_error;
- d_add(dentry, inode);
+ }
+ dput(d);
out:
dput(parent);
return 0;
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 06f37dd..58cc241 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -602,8 +602,7 @@
fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
if (unlikely(!fi)) {
inode_dec_link_count(inode);
- unlock_new_inode(inode);
- iput(inode);
+ discard_new_inode(inode);
return err;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
@@ -694,8 +693,7 @@
fi = udf_add_entry(inode, NULL, &fibh, &cfi, &err);
if (!fi) {
inode_dec_link_count(inode);
- unlock_new_inode(inode);
- iput(inode);
+ discard_new_inode(inode);
goto out;
}
set_nlink(inode, 2);
@@ -713,8 +711,7 @@
if (!fi) {
clear_nlink(inode);
mark_inode_dirty(inode);
- unlock_new_inode(inode);
- iput(inode);
+ discard_new_inode(inode);
goto out;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
@@ -1041,8 +1038,7 @@
out_no_entry:
up_write(&iinfo->i_data_sem);
inode_dec_link_count(inode);
- unlock_new_inode(inode);
- iput(inode);
+ discard_new_inode(inode);
goto out;
}
diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c
index e1ef0f0..02c0a4b 100644
--- a/fs/ufs/ialloc.c
+++ b/fs/ufs/ialloc.c
@@ -343,8 +343,7 @@
fail_remove_inode:
mutex_unlock(&sbi->s_lock);
clear_nlink(inode);
- unlock_new_inode(inode);
- iput(inode);
+ discard_new_inode(inode);
UFSD("EXIT (FAILED): err %d\n", err);
return ERR_PTR(err);
failed:
diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index d5f43ba..9ef40f1 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -43,8 +43,7 @@
return 0;
}
inode_dec_link_count(inode);
- unlock_new_inode(inode);
- iput(inode);
+ discard_new_inode(inode);
return err;
}
@@ -142,8 +141,7 @@
out_fail:
inode_dec_link_count(inode);
- unlock_new_inode(inode);
- iput(inode);
+ discard_new_inode(inode);
return err;
}
@@ -198,8 +196,7 @@
out_fail:
inode_dec_link_count(inode);
inode_dec_link_count(inode);
- unlock_new_inode(inode);
- iput (inode);
+ discard_new_inode(inode);
out_dir:
inode_dec_link_count(dir);
return err;
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 0fa29f3..3a75de7 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -1253,7 +1253,7 @@
inode_sb_list_add(inode);
/* make the inode look hashed for the writeback code */
- hlist_add_fake(&inode->i_hash);
+ inode_fake_hash(inode);
inode->i_uid = xfs_uid_to_kuid(ip->i_d.di_uid);
inode->i_gid = xfs_gid_to_kgid(ip->i_d.di_gid);
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 66c6e17..0b83629 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -227,7 +227,6 @@
extern void d_instantiate_new(struct dentry *, struct inode *);
extern struct dentry * d_instantiate_unique(struct dentry *, struct inode *);
extern struct dentry * d_instantiate_anon(struct dentry *, struct inode *);
-extern int d_instantiate_no_diralias(struct dentry *, struct inode *);
extern void __d_drop(struct dentry *dentry);
extern void d_drop(struct dentry *dentry);
extern void d_delete(struct dentry *);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7899737..1803347 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -688,6 +688,17 @@
}
/*
+ * __mark_inode_dirty expects inodes to be hashed. Since we don't
+ * want special inodes in the fileset inode space, we make them
+ * appear hashed, but do not put on any lists. hlist_del()
+ * will work fine and require no locking.
+ */
+static inline void inode_fake_hash(struct inode *inode)
+{
+ hlist_add_fake(&inode->i_hash);
+}
+
+/*
* inode->i_mutex nesting subclasses for the lock validator:
*
* 0: the object of the current VFS operation
@@ -2017,6 +2028,8 @@
* I_OVL_INUSE Used by overlayfs to get exclusive ownership on upper
* and work dirs among overlayfs mounts.
*
+ * I_CREATING New object's inode in the middle of setting up.
+ *
* Q: What is the difference between I_WILL_FREE and I_FREEING?
*/
#define I_DIRTY_SYNC (1 << 0)
@@ -2037,7 +2050,8 @@
#define __I_DIRTY_TIME_EXPIRED 12
#define I_DIRTY_TIME_EXPIRED (1 << __I_DIRTY_TIME_EXPIRED)
#define I_WB_SWITCH (1 << 13)
-#define I_OVL_INUSE (1 << 14)
+#define I_OVL_INUSE (1 << 14)
+#define I_CREATING (1 << 15)
#define I_DIRTY_INODE (I_DIRTY_SYNC | I_DIRTY_DATASYNC)
#define I_DIRTY (I_DIRTY_INODE | I_DIRTY_PAGES)
@@ -2919,6 +2933,7 @@
static inline void lockdep_annotate_inode_mutex_key(struct inode *inode) { };
#endif
extern void unlock_new_inode(struct inode *);
+extern void discard_new_inode(struct inode *);
extern unsigned int get_next_ino(void);
extern void evict_inodes(struct super_block *sb);