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ovl: Pass argument to ovl_get_inode() in a structure 

ovl_get_inode() right now has 5 parameters. Soon this patch series will
add 2 more and suddenly argument list starts looking too long.

Hence pass arguments to ovl_get_inode() in a structure and it looks
little cleaner.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Vivek Goyal 2018-05-08 09:27:21 -04:00 committed by Miklos Szeredi
parent 80ea09a002
commit ac6a52eb65
4 changed files with 34 additions and 15 deletions
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8
fs/overlayfs/export.c
View File

@ -300,12 +300,18 @@ static struct dentry *ovl_obtain_alias(struct super_block *sb,
struct dentry *dentry;
struct inode *inode;
struct ovl_entry *oe;
struct ovl_inode_params oip = {
.lowerpath = lowerpath,
.index = index,
.numlower = !!lower
};
/* We get overlay directory dentries with ovl_lookup_real() */
if (d_is_dir(upper ?: lower))
return ERR_PTR(-EIO);
inode = ovl_get_inode(sb, dget(upper), lowerpath, index, !!lower);
oip.upperdentry = dget(upper);
inode = ovl_get_inode(sb, &oip);
if (IS_ERR(inode)) {
dput(upper);
return ERR_CAST(inode);

20
fs/overlayfs/inode.c
View File

@ -749,15 +749,17 @@ static bool ovl_hash_bylower(struct super_block *sb, struct dentry *upper,
return true;
}
struct inode *ovl_get_inode(struct super_block *sb, struct dentry *upperdentry,
struct ovl_path *lowerpath, struct dentry *index,
unsigned int numlower)
struct inode *ovl_get_inode(struct super_block *sb,
struct ovl_inode_params *oip)
{
struct dentry *upperdentry = oip->upperdentry;
struct ovl_path *lowerpath = oip->lowerpath;
struct inode *realinode = upperdentry ? d_inode(upperdentry) : NULL;
struct inode *inode;
struct dentry *lowerdentry = lowerpath ? lowerpath->dentry : NULL;
bool bylower = ovl_hash_bylower(sb, upperdentry, lowerdentry, index);
int fsid = bylower ? lowerpath->layer->fsid : 0;
bool bylower = ovl_hash_bylower(sb, upperdentry, lowerdentry,
oip->index);
int fsid = bylower ? oip->lowerpath->layer->fsid : 0;
bool is_dir;
unsigned long ino = 0;
@ -774,8 +776,8 @@ struct inode *ovl_get_inode(struct super_block *sb, struct dentry *upperdentry,
upperdentry);
unsigned int nlink = is_dir ? 1 : realinode->i_nlink;
inode = iget5_locked(sb, (unsigned long) key,
ovl_inode_test, ovl_inode_set, key);
inode = iget5_locked(sb, (unsigned long) key, ovl_inode_test,
ovl_inode_set, key);
if (!inode)
goto out_nomem;
if (!(inode->i_state & I_NEW)) {
@ -811,12 +813,12 @@ struct inode *ovl_get_inode(struct super_block *sb, struct dentry *upperdentry,
if (upperdentry && ovl_is_impuredir(upperdentry))
ovl_set_flag(OVL_IMPURE, inode);
if (index)
if (oip->index)
ovl_set_flag(OVL_INDEX, inode);
/* Check for non-merge dir that may have whiteouts */
if (is_dir) {
if (((upperdentry && lowerdentry) || numlower > 1) ||
if (((upperdentry && lowerdentry) || oip->numlower > 1) ||
ovl_check_origin_xattr(upperdentry ?: lowerdentry)) {
ovl_set_flag(OVL_WHITEOUTS, inode);
}

10
fs/overlayfs/namei.c
View File

@ -1004,8 +1004,14 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
upperdentry = dget(index);
if (upperdentry || ctr) {
inode = ovl_get_inode(dentry->d_sb, upperdentry, stack, index,
ctr);
struct ovl_inode_params oip = {
.upperdentry = upperdentry,
.lowerpath = stack,
.index = index,
.numlower = ctr,
};
inode = ovl_get_inode(dentry->d_sb, &oip);
err = PTR_ERR(inode);
if (IS_ERR(inode))
goto out_free_oe;

11
fs/overlayfs/overlayfs.h
View File

@ -328,12 +328,17 @@ int ovl_open_maybe_copy_up(struct dentry *dentry, unsigned int file_flags);
int ovl_update_time(struct inode *inode, struct timespec *ts, int flags);
bool ovl_is_private_xattr(const char *name);
struct ovl_inode_params {
struct dentry *upperdentry;
struct ovl_path *lowerpath;
struct dentry *index;
unsigned int numlower;
};
struct inode *ovl_new_inode(struct super_block *sb, umode_t mode, dev_t rdev);
struct inode *ovl_lookup_inode(struct super_block *sb, struct dentry *real,
bool is_upper);
struct inode *ovl_get_inode(struct super_block *sb, struct dentry *upperdentry,
struct ovl_path *lowerpath, struct dentry *index,
unsigned int numlower);
struct inode *ovl_get_inode(struct super_block *sb,
struct ovl_inode_params *oip);
static inline void ovl_copyattr(struct inode *from, struct inode *to)
{
to->i_uid = from->i_uid;