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fs: dcache reduce branches in lookup path

Browse Source 
Reduce some branches and memory accesses in dcache lookup by adding dentry
flags to indicate common d_ops are set, rather than having to check them.
This saves a pointer memory access (dentry->d_op) in common path lookup
situations, and saves another pointer load and branch in cases where we
have d_op but not the particular operation.

Patched with:

git grep -E '[.>]([[:space:]])*d_op([[:space:]])*=' | xargs sed -e 's/\([^\t ]*\)->d_op = \(.*\);/d_set_d_op(\1, \2);/' -e 's/\([^\t ]*\)\.d_op = \(.*\);/d_set_d_op(\&\1, \2);/' -i

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
This commit is contained in:
Nick Piggin 2011-01-07 17:49:55 +11:00
parent 5f57cbcc02
commit fb045adb99
63 changed files with 174 additions and 137 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/ia64/kernel/perfmon.c
View File

@ -2233,7 +2233,7 @@ pfm_alloc_file(pfm_context_t *ctx)
}
path.mnt = mntget(pfmfs_mnt);
path.dentry->d_op = &pfmfs_dentry_operations;
d_set_d_op(path.dentry, &pfmfs_dentry_operations);
d_add(path.dentry, inode);
file = alloc_file(&path, FMODE_READ, &pfm_file_ops);

2
drivers/staging/autofs/root.c
View File

@ -237,7 +237,7 @@ static struct dentry *autofs_root_lookup(struct inode *dir, struct dentry *dentr
*
* We need to do this before we release the directory semaphore.
*/
dentry->d_op = &autofs_dentry_operations;
d_set_d_op(dentry, &autofs_dentry_operations);
dentry->d_flags |= DCACHE_AUTOFS_PENDING;
d_add(dentry, NULL);

8
drivers/staging/smbfs/dir.c
View File

@ -398,9 +398,9 @@ smb_new_dentry(struct dentry *dentry)
struct smb_sb_info *server = server_from_dentry(dentry);
if (server->mnt->flags & SMB_MOUNT_CASE)
dentry->d_op = &smbfs_dentry_operations_case;
d_set_d_op(dentry, &smbfs_dentry_operations_case);
else
dentry->d_op = &smbfs_dentry_operations;
d_set_d_op(dentry, &smbfs_dentry_operations);
dentry->d_time = jiffies;
}
@ -462,9 +462,9 @@ smb_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
add_entry:
server = server_from_dentry(dentry);
if (server->mnt->flags & SMB_MOUNT_CASE)
dentry->d_op = &smbfs_dentry_operations_case;
d_set_d_op(dentry, &smbfs_dentry_operations_case);
else
dentry->d_op = &smbfs_dentry_operations;
d_set_d_op(dentry, &smbfs_dentry_operations);
d_add(dentry, inode);
smb_renew_times(dentry);

26
fs/9p/vfs_inode.c
View File

@ -635,9 +635,9 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir,
}
if (v9ses->cache)
dentry->d_op = &v9fs_cached_dentry_operations;
d_set_d_op(dentry, &v9fs_cached_dentry_operations);
else
dentry->d_op = &v9fs_dentry_operations;
d_set_d_op(dentry, &v9fs_dentry_operations);
d_instantiate(dentry, inode);
err = v9fs_fid_add(dentry, fid);
@ -749,7 +749,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
err);
goto error;
}
dentry->d_op = &v9fs_cached_dentry_operations;
d_set_d_op(dentry, &v9fs_cached_dentry_operations);
d_instantiate(dentry, inode);
err = v9fs_fid_add(dentry, fid);
if (err < 0)
@ -767,7 +767,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
err = PTR_ERR(inode);
goto error;
}
dentry->d_op = &v9fs_dentry_operations;
d_set_d_op(dentry, &v9fs_dentry_operations);
d_instantiate(dentry, inode);
}
/* Now set the ACL based on the default value */
@ -956,7 +956,7 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
err);
goto error;
}
dentry->d_op = &v9fs_cached_dentry_operations;
d_set_d_op(dentry, &v9fs_cached_dentry_operations);
d_instantiate(dentry, inode);
err = v9fs_fid_add(dentry, fid);
if (err < 0)
@ -973,7 +973,7 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
err = PTR_ERR(inode);
goto error;
}
dentry->d_op = &v9fs_dentry_operations;
d_set_d_op(dentry, &v9fs_dentry_operations);
d_instantiate(dentry, inode);
}
/* Now set the ACL based on the default value */
@ -1041,9 +1041,9 @@ static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
inst_out:
if (v9ses->cache)
dentry->d_op = &v9fs_cached_dentry_operations;
d_set_d_op(dentry, &v9fs_cached_dentry_operations);
else
dentry->d_op = &v9fs_dentry_operations;
d_set_d_op(dentry, &v9fs_dentry_operations);
d_add(dentry, inode);
return NULL;
@ -1709,7 +1709,7 @@ v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
err);
goto error;
}
dentry->d_op = &v9fs_cached_dentry_operations;
d_set_d_op(dentry, &v9fs_cached_dentry_operations);
d_instantiate(dentry, inode);
err = v9fs_fid_add(dentry, fid);
if (err < 0)
@ -1722,7 +1722,7 @@ v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
err = PTR_ERR(inode);
goto error;
}
dentry->d_op = &v9fs_dentry_operations;
d_set_d_op(dentry, &v9fs_dentry_operations);
d_instantiate(dentry, inode);
}
@ -1856,7 +1856,7 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
ihold(old_dentry->d_inode);
}
dentry->d_op = old_dentry->d_op;
d_set_d_op(dentry, old_dentry->d_op);
d_instantiate(dentry, old_dentry->d_inode);
return err;
@ -1980,7 +1980,7 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode,
err);
goto error;
}
dentry->d_op = &v9fs_cached_dentry_operations;
d_set_d_op(dentry, &v9fs_cached_dentry_operations);
d_instantiate(dentry, inode);
err = v9fs_fid_add(dentry, fid);
if (err < 0)
@ -1996,7 +1996,7 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode,
err = PTR_ERR(inode);
goto error;
}
dentry->d_op = &v9fs_dentry_operations;
d_set_d_op(dentry, &v9fs_dentry_operations);
d_instantiate(dentry, inode);
}
/* Now set the ACL based on the default value */

2
fs/adfs/dir.c
View File

@ -276,7 +276,7 @@ adfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct object_info obj;
int error;
dentry->d_op = &adfs_dentry_operations;
d_set_d_op(dentry, &adfs_dentry_operations);
lock_kernel();
error = adfs_dir_lookup_byname(dir, &dentry->d_name, &obj);
if (error == 0) {

2
fs/adfs/super.c
View File

@ -484,7 +484,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
adfs_error(sb, "get root inode failed\n");
goto error;
} else
sb->s_root->d_op = &adfs_dentry_operations;
d_set_d_op(sb->s_root, &adfs_dentry_operations);
unlock_kernel();
return 0;

2
fs/affs/namei.c
View File

@ -240,7 +240,7 @@ affs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
if (IS_ERR(inode))
return ERR_CAST(inode);
}
dentry->d_op = AFFS_SB(sb)->s_flags & SF_INTL ? &affs_intl_dentry_operations : &affs_dentry_operations;
d_set_d_op(dentry, AFFS_SB(sb)->s_flags & SF_INTL ? &affs_intl_dentry_operations : &affs_dentry_operations);
d_add(dentry, inode);
return NULL;
}

2
fs/affs/super.c
View File

@ -482,7 +482,7 @@ got_root:
printk(KERN_ERR "AFFS: Get root inode failed\n");
goto out_error;
}
sb->s_root->d_op = &affs_dentry_operations;
d_set_d_op(sb->s_root, &affs_dentry_operations);
pr_debug("AFFS: s_flags=%lX\n",sb->s_flags);
return 0;

2
fs/afs/dir.c
View File

@ -581,7 +581,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
}
success:
dentry->d_op = &afs_fs_dentry_operations;
d_set_d_op(dentry, &afs_fs_dentry_operations);
d_add(dentry, inode);
_leave(" = 0 { vn=%u u=%u } -> { ino=%lu v=%llu }",

2
fs/anon_inodes.c
View File

@ -113,7 +113,7 @@ struct file *anon_inode_getfile(const char *name,
*/
ihold(anon_inode_inode);
path.dentry->d_op = &anon_inodefs_dentry_operations;
d_set_d_op(path.dentry, &anon_inodefs_dentry_operations);
d_instantiate(path.dentry, anon_inode_inode);
error = -ENFILE;

2
fs/autofs4/inode.c
View File

@ -309,7 +309,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
goto fail_iput;
pipe = NULL;
root->d_op = &autofs4_sb_dentry_operations;
d_set_d_op(root, &autofs4_sb_dentry_operations);
root->d_fsdata = ino;
/* Can this call block? */

10
fs/autofs4/root.c
View File

@ -571,7 +571,7 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
* we check for the hashed dentry and return the newly
* hashed dentry.
*/
dentry->d_op = &autofs4_root_dentry_operations;
d_set_d_op(dentry, &autofs4_root_dentry_operations);
/*
* And we need to ensure that the same dentry is used for
@ -710,9 +710,9 @@ static int autofs4_dir_symlink(struct inode *dir,
d_add(dentry, inode);
if (dir == dir->i_sb->s_root->d_inode)
dentry->d_op = &autofs4_root_dentry_operations;
d_set_d_op(dentry, &autofs4_root_dentry_operations);
else
dentry->d_op = &autofs4_dentry_operations;
d_set_d_op(dentry, &autofs4_dentry_operations);
dentry->d_fsdata = ino;
ino->dentry = dget(dentry);
@ -845,9 +845,9 @@ static int autofs4_dir_mkdir(struct inode *dir, struct dentry *dentry, int mode)
d_add(dentry, inode);
if (dir == dir->i_sb->s_root->d_inode)
dentry->d_op = &autofs4_root_dentry_operations;
d_set_d_op(dentry, &autofs4_root_dentry_operations);
else
dentry->d_op = &autofs4_dentry_operations;
d_set_d_op(dentry, &autofs4_dentry_operations);
dentry->d_fsdata = ino;
ino->dentry = dget(dentry);

4
fs/btrfs/export.c
View File

@ -110,7 +110,7 @@ static struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
dentry = d_obtain_alias(inode);
if (!IS_ERR(dentry))
dentry->d_op = &btrfs_dentry_operations;
d_set_d_op(dentry, &btrfs_dentry_operations);
return dentry;
fail:
srcu_read_unlock(&fs_info->subvol_srcu, index);
@ -225,7 +225,7 @@ static struct dentry *btrfs_get_parent(struct dentry *child)
key.offset = 0;
dentry = d_obtain_alias(btrfs_iget(root->fs_info->sb, &key, root, NULL));
if (!IS_ERR(dentry))
dentry->d_op = &btrfs_dentry_operations;
d_set_d_op(dentry, &btrfs_dentry_operations);
return dentry;
fail:
btrfs_free_path(path);

2
fs/btrfs/inode.c
View File

@ -4084,7 +4084,7 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry)
int index;
int ret;
dentry->d_op = &btrfs_dentry_operations;
d_set_d_op(dentry, &btrfs_dentry_operations);
if (dentry->d_name.len > BTRFS_NAME_LEN)
return ERR_PTR(-ENAMETOOLONG);

6
fs/ceph/dir.c
View File

@ -42,11 +42,11 @@ int ceph_init_dentry(struct dentry *dentry)
if (dentry->d_parent == NULL || /* nfs fh_to_dentry */
ceph_snap(dentry->d_parent->d_inode) == CEPH_NOSNAP)
dentry->d_op = &ceph_dentry_ops;
d_set_d_op(dentry, &ceph_dentry_ops);
else if (ceph_snap(dentry->d_parent->d_inode) == CEPH_SNAPDIR)
dentry->d_op = &ceph_snapdir_dentry_ops;
d_set_d_op(dentry, &ceph_snapdir_dentry_ops);
else
dentry->d_op = &ceph_snap_dentry_ops;
d_set_d_op(dentry, &ceph_snap_dentry_ops);
di = kmem_cache_alloc(ceph_dentry_cachep, GFP_NOFS | __GFP_ZERO);
if (!di)

16
fs/cifs/dir.c
View File

@ -135,9 +135,9 @@ static void setup_cifs_dentry(struct cifsTconInfo *tcon,
struct inode *newinode)
{
if (tcon->nocase)
direntry->d_op = &cifs_ci_dentry_ops;
d_set_d_op(direntry, &cifs_ci_dentry_ops);
else
direntry->d_op = &cifs_dentry_ops;
d_set_d_op(direntry, &cifs_dentry_ops);
d_instantiate(direntry, newinode);
}
@ -421,9 +421,9 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
rc = cifs_get_inode_info_unix(&newinode, full_path,
inode->i_sb, xid);
if (pTcon->nocase)
direntry->d_op = &cifs_ci_dentry_ops;
d_set_d_op(direntry, &cifs_ci_dentry_ops);
else
direntry->d_op = &cifs_dentry_ops;
d_set_d_op(direntry, &cifs_dentry_ops);
if (rc == 0)
d_instantiate(direntry, newinode);
@ -604,9 +604,9 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
if ((rc == 0) && (newInode != NULL)) {
if (pTcon->nocase)
direntry->d_op = &cifs_ci_dentry_ops;
d_set_d_op(direntry, &cifs_ci_dentry_ops);
else
direntry->d_op = &cifs_dentry_ops;
d_set_d_op(direntry, &cifs_dentry_ops);
d_add(direntry, newInode);
if (posix_open) {
filp = lookup_instantiate_filp(nd, direntry,
@ -634,9 +634,9 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
rc = 0;
direntry->d_time = jiffies;
if (pTcon->nocase)
direntry->d_op = &cifs_ci_dentry_ops;
d_set_d_op(direntry, &cifs_ci_dentry_ops);
else
direntry->d_op = &cifs_dentry_ops;
d_set_d_op(direntry, &cifs_dentry_ops);
d_add(direntry, NULL);
/* if it was once a directory (but how can we tell?) we could do
shrink_dcache_parent(direntry); */

8
fs/cifs/inode.c
View File

@ -1319,9 +1319,9 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
to set uid/gid */
inc_nlink(inode);
if (pTcon->nocase)
direntry->d_op = &cifs_ci_dentry_ops;
d_set_d_op(direntry, &cifs_ci_dentry_ops);
else
direntry->d_op = &cifs_dentry_ops;
d_set_d_op(direntry, &cifs_dentry_ops);
cifs_unix_basic_to_fattr(&fattr, pInfo, cifs_sb);
cifs_fill_uniqueid(inode->i_sb, &fattr);
@ -1363,9 +1363,9 @@ mkdir_get_info:
inode->i_sb, xid, NULL);
if (pTcon->nocase)
direntry->d_op = &cifs_ci_dentry_ops;
d_set_d_op(direntry, &cifs_ci_dentry_ops);
else
direntry->d_op = &cifs_dentry_ops;
d_set_d_op(direntry, &cifs_dentry_ops);
d_instantiate(direntry, newinode);
/* setting nlink not necessary except in cases where we
* failed to get it from the server or was set bogus */

4
fs/cifs/link.c
View File

@ -525,9 +525,9 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
rc);
} else {
if (pTcon->nocase)
direntry->d_op = &cifs_ci_dentry_ops;
d_set_d_op(direntry, &cifs_ci_dentry_ops);
else
direntry->d_op = &cifs_dentry_ops;
d_set_d_op(direntry, &cifs_dentry_ops);
d_instantiate(direntry, newinode);
}
}

4
fs/cifs/readdir.c
View File

@ -103,9 +103,9 @@ cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
}
if (cifs_sb_master_tcon(CIFS_SB(sb))->nocase)
dentry->d_op = &cifs_ci_dentry_ops;
d_set_d_op(dentry, &cifs_ci_dentry_ops);
else
dentry->d_op = &cifs_dentry_ops;
d_set_d_op(dentry, &cifs_dentry_ops);
alias = d_materialise_unique(dentry, inode);
if (alias != NULL) {

2
fs/coda/dir.c
View File

@ -125,7 +125,7 @@ static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, struc
return ERR_PTR(error);
exit:
entry->d_op = &coda_dentry_operations;
d_set_d_op(entry, &coda_dentry_operations);
if (inode && (type & CODA_NOCACHE))
coda_flag_inode(inode, C_VATTR | C_PURGE);

8
fs/configfs/dir.c
View File

@ -442,7 +442,7 @@ static int configfs_attach_attr(struct configfs_dirent * sd, struct dentry * den
return error;
}
dentry->d_op = &configfs_dentry_ops;
d_set_d_op(dentry, &configfs_dentry_ops);
d_rehash(dentry);
return 0;
@ -489,7 +489,7 @@ static struct dentry * configfs_lookup(struct inode *dir,
*/
if (dentry->d_name.len > NAME_MAX)
return ERR_PTR(-ENAMETOOLONG);
dentry->d_op = &configfs_dentry_ops;
d_set_d_op(dentry, &configfs_dentry_ops);
d_add(dentry, NULL);
return NULL;
}
@ -683,7 +683,7 @@ static int create_default_group(struct config_group *parent_group,
ret = -ENOMEM;
child = d_alloc(parent, &name);
if (child) {
child->d_op = &configfs_dentry_ops;
d_set_d_op(child, &configfs_dentry_ops);
d_add(child, NULL);
ret = configfs_attach_group(&parent_group->cg_item,
@ -1681,7 +1681,7 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys)
err = -ENOMEM;
dentry = d_alloc(configfs_sb->s_root, &name);
if (dentry) {
dentry->d_op = &configfs_dentry_ops;
d_set_d_op(dentry, &configfs_dentry_ops);
d_add(dentry, NULL);
err = configfs_attach_group(sd->s_element, &group->cg_item,

30
fs/dcache.c
View File

@ -398,7 +398,7 @@ repeat:
return;
}
if (dentry->d_op && dentry->d_op->d_delete) {
if (dentry->d_flags & DCACHE_OP_DELETE) {
if (dentry->d_op->d_delete(dentry))
goto kill_it;
}
@ -1301,6 +1301,28 @@ struct dentry *d_alloc_name(struct dentry *parent, const char *name)
}
EXPORT_SYMBOL(d_alloc_name);
void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op)
{
BUG_ON(dentry->d_op);
BUG_ON(dentry->d_flags & (DCACHE_OP_HASH |
DCACHE_OP_COMPARE |
DCACHE_OP_REVALIDATE |
DCACHE_OP_DELETE ));
dentry->d_op = op;
if (!op)
return;
if (op->d_hash)
dentry->d_flags |= DCACHE_OP_HASH;
if (op->d_compare)
dentry->d_flags |= DCACHE_OP_COMPARE;
if (op->d_revalidate)
dentry->d_flags |= DCACHE_OP_REVALIDATE;
if (op->d_delete)
dentry->d_flags |= DCACHE_OP_DELETE;
}
EXPORT_SYMBOL(d_set_d_op);
static void __d_instantiate(struct dentry *dentry, struct inode *inode)
{
spin_lock(&dentry->d_lock);
@ -1731,7 +1753,7 @@ seqretry:
*/
if (read_seqcount_retry(&dentry->d_seq, *seq))
goto seqretry;
if (parent->d_op && parent->d_op->d_compare) {
if (parent->d_flags & DCACHE_OP_COMPARE) {
if (parent->d_op->d_compare(parent, *inode,
dentry, i,
tlen, tname, name))
@ -1846,7 +1868,7 @@ struct dentry *__d_lookup(struct dentry *parent, struct qstr *name)
*/
tlen = dentry->d_name.len;
tname = dentry->d_name.name;
if (parent->d_op && parent->d_op->d_compare) {
if (parent->d_flags & DCACHE_OP_COMPARE) {
if (parent->d_op->d_compare(parent, parent->d_inode,
dentry, dentry->d_inode,
tlen, tname, name))
@ -1887,7 +1909,7 @@ struct dentry *d_hash_and_lookup(struct dentry *dir, struct qstr *name)
* routine may choose to leave the hash value unchanged.
*/
name->hash = full_name_hash(name->name, name->len);
if (dir->d_op && dir->d_op->d_hash) {
if (dir->d_flags & DCACHE_OP_HASH) {
if (dir->d_op->d_hash(dir, dir->d_inode, name) < 0)
goto out;
}

2
fs/ecryptfs/inode.c
View File

@ -441,7 +441,7 @@ static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
struct qstr lower_name;
int rc = 0;
ecryptfs_dentry->d_op = &ecryptfs_dops;
d_set_d_op(ecryptfs_dentry, &ecryptfs_dops);
if ((ecryptfs_dentry->d_name.len == 1
&& !strcmp(ecryptfs_dentry->d_name.name, "."))
|| (ecryptfs_dentry->d_name.len == 2

4
fs/ecryptfs/main.c
View File

@ -189,7 +189,7 @@ int ecryptfs_interpose(struct dentry *lower_dentry, struct dentry *dentry,
if (special_file(lower_inode->i_mode))
init_special_inode(inode, lower_inode->i_mode,
lower_inode->i_rdev);
dentry->d_op = &ecryptfs_dops;
d_set_d_op(dentry, &ecryptfs_dops);
fsstack_copy_attr_all(inode, lower_inode);
/* This size will be overwritten for real files w/ headers and
* other metadata */
@ -594,7 +594,7 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
deactivate_locked_super(s);
goto out;
}
s->s_root->d_op = &ecryptfs_dops;
d_set_d_op(s->s_root, &ecryptfs_dops);
s->s_root->d_sb = s;
s->s_root->d_parent = s->s_root;

4
fs/fat/inode.c
View File

@ -750,7 +750,7 @@ static struct dentry *fat_fh_to_dentry(struct super_block *sb,
*/
result = d_obtain_alias(inode);
if (!IS_ERR(result))
result->d_op = sb->s_root->d_op;
d_set_d_op(result, sb->s_root->d_op);
return result;
}
@ -800,7 +800,7 @@ static struct dentry *fat_get_parent(struct dentry *child)
parent = d_obtain_alias(inode);
if (!IS_ERR(parent))
parent->d_op = sb->s_root->d_op;
d_set_d_op(parent, sb->s_root->d_op);
out:
unlock_super(sb);

6
fs/fat/namei_msdos.c
View File

@ -227,10 +227,10 @@ static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
}
out:
unlock_super(sb);
dentry->d_op = &msdos_dentry_operations;
d_set_d_op(dentry, &msdos_dentry_operations);
dentry = d_splice_alias(inode, dentry);
if (dentry)
dentry->d_op = &msdos_dentry_operations;
d_set_d_op(dentry, &msdos_dentry_operations);
return dentry;
error:
@ -673,7 +673,7 @@ static int msdos_fill_super(struct super_block *sb, void *data, int silent)
}
sb->s_flags |= MS_NOATIME;
sb->s_root->d_op = &msdos_dentry_operations;
d_set_d_op(sb->s_root, &msdos_dentry_operations);
unlock_super(sb);
return 0;
}

8
fs/fat/namei_vfat.c
View File

@ -766,11 +766,11 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
out:
unlock_super(sb);
dentry->d_op = sb->s_root->d_op;
d_set_d_op(dentry, sb->s_root->d_op);
dentry->d_time = dentry->d_parent->d_inode->i_version;
dentry = d_splice_alias(inode, dentry);
if (dentry) {
dentry->d_op = sb->s_root->d_op;
d_set_d_op(dentry, sb->s_root->d_op);
dentry->d_time = dentry->d_parent->d_inode->i_version;
}
return dentry;
@ -1072,9 +1072,9 @@ static int vfat_fill_super(struct super_block *sb, void *data, int silent)
}
if (MSDOS_SB(sb)->options.name_check != 's')
sb->s_root->d_op = &vfat_ci_dentry_ops;
d_set_d_op(sb->s_root, &vfat_ci_dentry_ops);
else
sb->s_root->d_op = &vfat_dentry_ops;
d_set_d_op(sb->s_root, &vfat_dentry_ops);
unlock_super(sb);
return 0;

2
fs/fuse/dir.c
View File

@ -347,7 +347,7 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
}
entry = newent ? newent : entry;
entry->d_op = &fuse_dentry_operations;
d_set_d_op(entry, &fuse_dentry_operations);
if (outarg_valid)
fuse_change_entry_timeout(entry, &outarg);
else

4
fs/fuse/inode.c
View File

@ -626,7 +626,7 @@ static struct dentry *fuse_get_dentry(struct super_block *sb,
entry = d_obtain_alias(inode);
if (!IS_ERR(entry) && get_node_id(inode) != FUSE_ROOT_ID) {
entry->d_op = &fuse_dentry_operations;
d_set_d_op(entry, &fuse_dentry_operations);
fuse_invalidate_entry_cache(entry);
}
@ -728,7 +728,7 @@ static struct dentry *fuse_get_parent(struct dentry *child)
parent = d_obtain_alias(inode);
if (!IS_ERR(parent) && get_node_id(inode) != FUSE_ROOT_ID) {
parent->d_op = &fuse_dentry_operations;
d_set_d_op(parent, &fuse_dentry_operations);
fuse_invalidate_entry_cache(parent);
}

4
fs/gfs2/export.c
View File

@ -130,7 +130,7 @@ static struct dentry *gfs2_get_parent(struct dentry *child)
dentry = d_obtain_alias(gfs2_lookupi(child->d_inode, &gfs2_qdotdot, 1));
if (!IS_ERR(dentry))
dentry->d_op = &gfs2_dops;
d_set_d_op(dentry, &gfs2_dops);
return dentry;
}
@ -158,7 +158,7 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb,
out_inode:
dentry = d_obtain_alias(inode);
if (!IS_ERR(dentry))
dentry->d_op = &gfs2_dops;
d_set_d_op(dentry, &gfs2_dops);
return dentry;
}

2
fs/gfs2/ops_fstype.c
View File

@ -440,7 +440,7 @@ static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr,
iput(inode);
return -ENOMEM;
}
dentry->d_op = &gfs2_dops;
d_set_d_op(dentry, &gfs2_dops);
*dptr = dentry;
return 0;
}

2
fs/gfs2/ops_inode.c
View File

@ -106,7 +106,7 @@ static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
{
struct inode *inode = NULL;
dentry->d_op = &gfs2_dops;
d_set_d_op(dentry, &gfs2_dops);
inode = gfs2_lookupi(dir, &dentry->d_name, 0);
if (inode && IS_ERR(inode))

2
fs/hfs/dir.c
View File

@ -25,7 +25,7 @@ static struct dentry *hfs_lookup(struct inode *dir, struct dentry *dentry,
struct inode *inode = NULL;
int res;
dentry->d_op = &hfs_dentry_operations;
d_set_d_op(dentry, &hfs_dentry_operations);
hfs_find_init(HFS_SB(dir->i_sb)->cat_tree, &fd);
hfs_cat_build_key(dir->i_sb, fd.search_key, dir->i_ino, &dentry->d_name);

2
fs/hfs/super.c
View File

@ -434,7 +434,7 @@ static int hfs_fill_super(struct super_block *sb, void *data, int silent)
if (!sb->s_root)
goto bail_iput;
sb->s_root->d_op = &hfs_dentry_operations;
d_set_d_op(sb->s_root, &hfs_dentry_operations);
/* everything's okay */
return 0;

2
fs/hfsplus/dir.c
View File

@ -37,7 +37,7 @@ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
sb = dir->i_sb;
dentry->d_op = &hfsplus_dentry_operations;
d_set_d_op(dentry, &hfsplus_dentry_operations);
dentry->d_fsdata = NULL;
hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name);

2
fs/hfsplus/super.c
View File

@ -419,7 +419,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
err = -ENOMEM;
goto cleanup;
}
sb->s_root->d_op = &hfsplus_dentry_operations;
d_set_d_op(sb->s_root, &hfsplus_dentry_operations);
str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1;
str.name = HFSP_HIDDENDIR_NAME;

2
fs/hostfs/hostfs_kern.c
View File

@ -612,7 +612,7 @@ struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
goto out_put;
d_add(dentry, inode);
dentry->d_op = &hostfs_dentry_ops;
d_set_d_op(dentry, &hostfs_dentry_ops);
return NULL;
out_put:

2
fs/hpfs/dentry.c
View File

@ -65,5 +65,5 @@ static const struct dentry_operations hpfs_dentry_operations = {
void hpfs_set_dentry_operations(struct dentry *dentry)
{
dentry->d_op = &hpfs_dentry_operations;
d_set_d_op(dentry, &hpfs_dentry_operations);
}

2
fs/isofs/inode.c
View File

@ -949,7 +949,7 @@ root_found:
table += 2;
if (opt.check == 'r')
table++;
s->s_root->d_op = &isofs_dentry_ops[table];
d_set_d_op(s->s_root, &isofs_dentry_ops[table]);
kfree(opt.iocharset);

2
fs/isofs/namei.c
View File

@ -172,7 +172,7 @@ struct dentry *isofs_lookup(struct inode *dir, struct dentry *dentry, struct nam
struct inode *inode;
struct page *page;
dentry->d_op = dir->i_sb->s_root->d_op;
d_set_d_op(dentry, dir->i_sb->s_root->d_op);
page = alloc_page(GFP_USER);
if (!page)

4
fs/jfs/namei.c
View File

@ -1466,7 +1466,7 @@ static struct dentry *jfs_lookup(struct inode *dip, struct dentry *dentry, struc
jfs_info("jfs_lookup: name = %s", name);
if (JFS_SBI(dip->i_sb)->mntflag & JFS_OS2)
dentry->d_op = &jfs_ci_dentry_operations;
d_set_d_op(dentry, &jfs_ci_dentry_operations);
if ((name[0] == '.') && (len == 1))
inum = dip->i_ino;
@ -1495,7 +1495,7 @@ static struct dentry *jfs_lookup(struct inode *dip, struct dentry *dentry, struc
dentry = d_splice_alias(ip, dentry);
if (dentry && (JFS_SBI(dip->i_sb)->mntflag & JFS_OS2))
dentry->d_op = &jfs_ci_dentry_operations;
d_set_d_op(dentry, &jfs_ci_dentry_operations);
return dentry;
}

2
fs/jfs/super.c
View File

@ -525,7 +525,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
goto out_no_root;
if (sbi->mntflag & JFS_OS2)
sb->s_root->d_op = &jfs_ci_dentry_operations;
d_set_d_op(sb->s_root, &jfs_ci_dentry_operations);
/* logical blocks are represented by 40 bits in pxd_t, etc. */
sb->s_maxbytes = ((u64) sb->s_blocksize) << 40;

2
fs/libfs.c
View File

@ -59,7 +59,7 @@ struct dentry *simple_lookup(struct inode *dir, struct dentry *dentry, struct na
if (dentry->d_name.len > NAME_MAX)
return ERR_PTR(-ENAMETOOLONG);
dentry->d_op = &simple_dentry_operations;
d_set_d_op(dentry, &simple_dentry_operations);
d_add(dentry, NULL);
return NULL;
}

2
fs/minix/namei.c
View File

@ -23,7 +23,7 @@ static struct dentry *minix_lookup(struct inode * dir, struct dentry *dentry, st
struct inode * inode = NULL;
ino_t ino;
dentry->d_op = dir->i_sb->s_root->d_op;
d_set_d_op(dentry, dir->i_sb->s_root->d_op);
if (dentry->d_name.len > minix_sb(dir->i_sb)->s_namelen)
return ERR_PTR(-ENAMETOOLONG);

31
fs/namei.c
View File

@ -587,6 +587,17 @@ do_revalidate(struct dentry *dentry, struct nameidata *nd)
return dentry;
}
static inline int need_reval_dot(struct dentry *dentry)
{
if (likely(!(dentry->d_flags & DCACHE_OP_REVALIDATE)))
return 0;
if (likely(!(dentry->d_sb->s_type->fs_flags & FS_REVAL_DOT)))
return 0;
return 1;
}
/*
* force_reval_path - force revalidation of a dentry
*
@ -610,10 +621,9 @@ force_reval_path(struct path *path, struct nameidata *nd)
/*
* only check on filesystems where it's possible for the dentry to
* become stale. It's assumed that if this flag is set then the
* d_revalidate op will also be defined.
* become stale.
*/
if (!(dentry->d_sb->s_type->fs_flags & FS_REVAL_DOT))
if (!need_reval_dot(dentry))
return 0;
status = dentry->d_op->d_revalidate(dentry, nd);
@ -1003,7 +1013,7 @@ static int do_lookup(struct nameidata *nd, struct qstr *name,
* See if the low-level filesystem might want
* to use its own hash..
*/
if (parent->d_op && parent->d_op->d_hash) {
if (unlikely(parent->d_flags & DCACHE_OP_HASH)) {
int err = parent->d_op->d_hash(parent, nd->inode, name);
if (err < 0)
return err;
@ -1029,7 +1039,7 @@ static int do_lookup(struct nameidata *nd, struct qstr *name,
return -ECHILD;
nd->seq = seq;
if (dentry->d_op && dentry->d_op->d_revalidate) {
if (dentry->d_flags & DCACHE_OP_REVALIDATE) {
/* We commonly drop rcu-walk here */
if (nameidata_dentry_drop_rcu(nd, dentry))
return -ECHILD;
@ -1043,7 +1053,7 @@ static int do_lookup(struct nameidata *nd, struct qstr *name,
if (!dentry)
goto need_lookup;
found:
if (dentry->d_op && dentry->d_op->d_revalidate)
if (dentry->d_flags & DCACHE_OP_REVALIDATE)
goto need_revalidate;
done:
path->mnt = mnt;
@ -1281,8 +1291,7 @@ return_reval:
* We bypassed the ordinary revalidation routines.
* We may need to check the cached dentry for staleness.
*/
if (nd->path.dentry && nd->path.dentry->d_sb &&
(nd->path.dentry->d_sb->s_type->fs_flags & FS_REVAL_DOT)) {
if (need_reval_dot(nd->path.dentry)) {
if (nameidata_drop_rcu_maybe(nd))
return -ECHILD;
err = -ESTALE;
@ -1602,7 +1611,7 @@ static struct dentry *__lookup_hash(struct qstr *name,
* See if the low-level filesystem might want
* to use its own hash..
*/
if (base->d_op && base->d_op->d_hash) {
if (base->d_flags & DCACHE_OP_HASH) {
err = base->d_op->d_hash(base, inode, name);
dentry = ERR_PTR(err);
if (err < 0)
@ -1616,7 +1625,7 @@ static struct dentry *__lookup_hash(struct qstr *name,
*/
dentry = d_lookup(base, name);
if (dentry && dentry->d_op && dentry->d_op->d_revalidate)
if (dentry && (dentry->d_flags & DCACHE_OP_REVALIDATE))
dentry = do_revalidate(dentry, nd);
if (!dentry)
@ -2070,7 +2079,7 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
follow_dotdot(nd);
dir = nd->path.dentry;
case LAST_DOT:
if (nd->path.mnt->mnt_sb->s_type->fs_flags & FS_REVAL_DOT) {
if (need_reval_dot(dir)) {
if (!dir->d_op->d_revalidate(dir, nd)) {
error = -ESTALE;
goto exit;

4
fs/ncpfs/dir.c
View File

@ -633,7 +633,7 @@ ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
entry->ino = iunique(dir->i_sb, 2);
inode = ncp_iget(dir->i_sb, entry);
if (inode) {
newdent->d_op = &ncp_dentry_operations;
d_set_d_op(newdent, &ncp_dentry_operations);
d_instantiate(newdent, inode);
if (!hashed)
d_rehash(newdent);
@ -889,7 +889,7 @@ static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, struc
if (inode) {
ncp_new_dentry(dentry);
add_entry:
dentry->d_op = &ncp_dentry_operations;
d_set_d_op(dentry, &ncp_dentry_operations);
d_add(dentry, inode);
error = 0;
}

2
fs/ncpfs/inode.c
View File

@ -717,7 +717,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
sb->s_root = d_alloc_root(root_inode);
if (!sb->s_root)
goto out_no_root;
sb->s_root->d_op = &ncp_root_dentry_operations;
d_set_d_op(sb->s_root, &ncp_root_dentry_operations);
return 0;
out_no_root:

6
fs/nfs/dir.c
View File

@ -438,7 +438,7 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry)
if (dentry == NULL)
return;
dentry->d_op = NFS_PROTO(dir)->dentry_ops;
d_set_d_op(dentry, NFS_PROTO(dir)->dentry_ops);
inode = nfs_fhget(dentry->d_sb, entry->fh, entry->fattr);
if (IS_ERR(inode))
goto out;
@ -1188,7 +1188,7 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
if (dentry->d_name.len > NFS_SERVER(dir)->namelen)
goto out;
dentry->d_op = NFS_PROTO(dir)->dentry_ops;
d_set_d_op(dentry, NFS_PROTO(dir)->dentry_ops);
/*
* If we're doing an exclusive create, optimize away the lookup
@ -1333,7 +1333,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
res = ERR_PTR(-ENAMETOOLONG);
goto out;
}
dentry->d_op = NFS_PROTO(dir)->dentry_ops;
d_set_d_op(dentry, NFS_PROTO(dir)->dentry_ops);
/* Let vfs_create() deal with O_EXCL. Instantiate, but don't hash
* the dentry. */

4
fs/nfs/getroot.c
View File

@ -121,7 +121,7 @@ struct dentry *nfs_get_root(struct super_block *sb, struct nfs_fh *mntfh)
security_d_instantiate(ret, inode);
if (ret->d_op == NULL)
ret->d_op = server->nfs_client->rpc_ops->dentry_ops;
d_set_d_op(ret, server->nfs_client->rpc_ops->dentry_ops);
out:
nfs_free_fattr(fsinfo.fattr);
return ret;
@ -228,7 +228,7 @@ struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh)
security_d_instantiate(ret, inode);
if (ret->d_op == NULL)
ret->d_op = server->nfs_client->rpc_ops->dentry_ops;
d_set_d_op(ret, server->nfs_client->rpc_ops->dentry_ops);
out:
nfs_free_fattr(fattr);

4
fs/ocfs2/export.c
View File

@ -138,7 +138,7 @@ check_gen:
result = d_obtain_alias(inode);
if (!IS_ERR(result))
result->d_op = &ocfs2_dentry_ops;
d_set_d_op(result, &ocfs2_dentry_ops);
else
mlog_errno(PTR_ERR(result));
@ -176,7 +176,7 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
parent = d_obtain_alias(ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0));
if (!IS_ERR(parent))
parent->d_op = &ocfs2_dentry_ops;
d_set_d_op(parent, &ocfs2_dentry_ops);
bail_unlock:
ocfs2_inode_unlock(dir, 0);

10
fs/ocfs2/namei.c
View File

@ -147,7 +147,7 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
spin_unlock(&oi->ip_lock);
bail_add:
dentry->d_op = &ocfs2_dentry_ops;
d_set_d_op(dentry, &ocfs2_dentry_ops);
ret = d_splice_alias(inode, dentry);
if (inode) {
@ -415,7 +415,7 @@ static int ocfs2_mknod(struct inode *dir,
mlog_errno(status);
goto leave;
}
dentry->d_op = &ocfs2_dentry_ops;
d_set_d_op(dentry, &ocfs2_dentry_ops);
status = ocfs2_add_entry(handle, dentry, inode,
OCFS2_I(inode)->ip_blkno, parent_fe_bh,
@ -743,7 +743,7 @@ static int ocfs2_link(struct dentry *old_dentry,
}
ihold(inode);
dentry->d_op = &ocfs2_dentry_ops;
d_set_d_op(dentry, &ocfs2_dentry_ops);
d_instantiate(dentry, inode);
out_commit:
@ -1794,7 +1794,7 @@ static int ocfs2_symlink(struct inode *dir,
mlog_errno(status);
goto bail;
}
dentry->d_op = &ocfs2_dentry_ops;
d_set_d_op(dentry, &ocfs2_dentry_ops);
status = ocfs2_add_entry(handle, dentry, inode,
le64_to_cpu(fe->i_blkno), parent_fe_bh,
@ -2459,7 +2459,7 @@ int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
goto out_commit;
}
dentry->d_op = &ocfs2_dentry_ops;
d_set_d_op(dentry, &ocfs2_dentry_ops);
d_instantiate(dentry, inode);
status = 0;
out_commit:

2
fs/pipe.c
View File

@ -1004,7 +1004,7 @@ struct file *create_write_pipe(int flags)
goto err_inode;
path.mnt = mntget(pipe_mnt);
path.dentry->d_op = &pipefs_dentry_operations;
d_set_d_op(path.dentry, &pipefs_dentry_operations);
d_instantiate(path.dentry, inode);
err = -ENFILE;

12
fs/proc/base.c
View File

@ -1969,7 +1969,7 @@ static struct dentry *proc_fd_instantiate(struct inode *dir,
inode->i_op = &proc_pid_link_inode_operations;
inode->i_size = 64;
ei->op.proc_get_link = proc_fd_link;
dentry->d_op = &tid_fd_dentry_operations;
d_set_d_op(dentry, &tid_fd_dentry_operations);
d_add(dentry, inode);
/* Close the race of the process dying before we return the dentry */
if (tid_fd_revalidate(dentry, NULL))
@ -2137,7 +2137,7 @@ static struct dentry *proc_fdinfo_instantiate(struct inode *dir,
ei->fd = fd;
inode->i_mode = S_IFREG | S_IRUSR;
inode->i_fop = &proc_fdinfo_file_operations;
dentry->d_op = &tid_fd_dentry_operations;
d_set_d_op(dentry, &tid_fd_dentry_operations);
d_add(dentry, inode);
/* Close the race of the process dying before we return the dentry */
if (tid_fd_revalidate(dentry, NULL))
@ -2196,7 +2196,7 @@ static struct dentry *proc_pident_instantiate(struct inode *dir,
if (p->fop)
inode->i_fop = p->fop;
ei->op = p->op;
dentry->d_op = &pid_dentry_operations;
d_set_d_op(dentry, &pid_dentry_operations);
d_add(dentry, inode);
/* Close the race of the process dying before we return the dentry */
if (pid_revalidate(dentry, NULL))
@ -2615,7 +2615,7 @@ static struct dentry *proc_base_instantiate(struct inode *dir,
if (p->fop)
inode->i_fop = p->fop;
ei->op = p->op;
dentry->d_op = &proc_base_dentry_operations;
d_set_d_op(dentry, &proc_base_dentry_operations);
d_add(dentry, inode);
error = NULL;
out:
@ -2926,7 +2926,7 @@ static struct dentry *proc_pid_instantiate(struct inode *dir,
inode->i_nlink = 2 + pid_entry_count_dirs(tgid_base_stuff,
ARRAY_SIZE(tgid_base_stuff));
dentry->d_op = &pid_dentry_operations;
d_set_d_op(dentry, &pid_dentry_operations);
d_add(dentry, inode);
/* Close the race of the process dying before we return the dentry */
@ -3169,7 +3169,7 @@ static struct dentry *proc_task_instantiate(struct inode *dir,
inode->i_nlink = 2 + pid_entry_count_dirs(tid_base_stuff,
ARRAY_SIZE(tid_base_stuff));
dentry->d_op = &pid_dentry_operations;
d_set_d_op(dentry, &pid_dentry_operations);
d_add(dentry, inode);
/* Close the race of the process dying before we return the dentry */

2
fs/proc/generic.c
View File

@ -439,7 +439,7 @@ struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir,
out_unlock:
if (inode) {
dentry->d_op = &proc_dentry_operations;
d_set_d_op(dentry, &proc_dentry_operations);
d_add(dentry, inode);
return NULL;
}

4
fs/proc/proc_sysctl.c
View File

@ -120,7 +120,7 @@ static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry,
goto out;
err = NULL;
dentry->d_op = &proc_sys_dentry_operations;
d_set_d_op(dentry, &proc_sys_dentry_operations);
d_add(dentry, inode);
out:
@ -201,7 +201,7 @@ static int proc_sys_fill_cache(struct file *filp, void *dirent,
dput(child);
return -ENOMEM;
} else {
child->d_op = &proc_sys_dentry_operations;
d_set_d_op(child, &proc_sys_dentry_operations);
d_add(child, inode);
}
} else {

2
fs/reiserfs/xattr.c
View File

@ -990,7 +990,7 @@ int reiserfs_lookup_privroot(struct super_block *s)
strlen(PRIVROOT_NAME));
if (!IS_ERR(dentry)) {
REISERFS_SB(s)->priv_root = dentry;
dentry->d_op = &xattr_lookup_poison_ops;
d_set_d_op(dentry, &xattr_lookup_poison_ops);
if (dentry->d_inode)
dentry->d_inode->i_flags |= S_PRIVATE;
} else

2
fs/sysfs/dir.c
View File

@ -701,7 +701,7 @@ static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
/* instantiate and hash dentry */
ret = d_find_alias(inode);
if (!ret) {
dentry->d_op = &sysfs_dentry_ops;
d_set_d_op(dentry, &sysfs_dentry_ops);
dentry->d_fsdata = sysfs_get(sd);
d_add(dentry, inode);
} else {

2
fs/sysv/namei.c
View File

@ -48,7 +48,7 @@ static struct dentry *sysv_lookup(struct inode * dir, struct dentry * dentry, st
struct inode * inode = NULL;
ino_t ino;
dentry->d_op = dir->i_sb->s_root->d_op;
d_set_d_op(dentry, dir->i_sb->s_root->d_op);
if (dentry->d_name.len > SYSV_NAMELEN)
return ERR_PTR(-ENAMETOOLONG);
ino = sysv_inode_by_name(dentry);

2
fs/sysv/super.c
View File

@ -346,7 +346,7 @@ static int complete_read_super(struct super_block *sb, int silent, int size)
if (sbi->s_forced_ro)
sb->s_flags |= MS_RDONLY;
if (sbi->s_truncate)
sb->s_root->d_op = &sysv_dentry_operations;
d_set_d_op(sb->s_root, &sysv_dentry_operations);
return 1;
}

6
include/linux/dcache.h
View File

@ -183,6 +183,11 @@ struct dentry_operations {
#define DCACHE_GENOCIDE 0x0200
#define DCACHE_MOUNTED 0x0400 /* is a mountpoint */
#define DCACHE_OP_HASH 0x1000
#define DCACHE_OP_COMPARE 0x2000
#define DCACHE_OP_REVALIDATE 0x4000
#define DCACHE_OP_DELETE 0x8000
extern spinlock_t dcache_inode_lock;
extern seqlock_t rename_lock;
@ -201,6 +206,7 @@ extern struct dentry * d_materialise_unique(struct dentry *, struct inode *);
extern void __d_drop(struct dentry *dentry);
extern void d_drop(struct dentry *dentry);
extern void d_delete(struct dentry *);
extern void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op);
/* allocate/de-allocate */
extern struct dentry * d_alloc(struct dentry *, const struct qstr *);

2
kernel/cgroup.c
View File

@ -2222,7 +2222,7 @@ static struct dentry *cgroup_lookup(struct inode *dir,
if (dentry->d_name.len > NAME_MAX)
return ERR_PTR(-ENAMETOOLONG);
dentry->d_op = &cgroup_dentry_operations;
d_set_d_op(dentry, &cgroup_dentry_operations);
d_add(dentry, NULL);
return NULL;
}

2
net/socket.c
View File

@ -368,7 +368,7 @@ static int sock_alloc_file(struct socket *sock, struct file **f, int flags)
}
path.mnt = mntget(sock_mnt);
path.dentry->d_op = &sockfs_dentry_operations;
d_set_d_op(path.dentry, &sockfs_dentry_operations);
d_instantiate(path.dentry, SOCK_INODE(sock));
SOCK_INODE(sock)->i_fop = &socket_file_ops;

2
net/sunrpc/rpc_pipe.c
View File

@ -591,7 +591,7 @@ static struct dentry *__rpc_lookup_create(struct dentry *parent,
}
}
if (!dentry->d_inode)
dentry->d_op = &rpc_dentry_operations;
d_set_d_op(dentry, &rpc_dentry_operations);
out_err:
return dentry;
}