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Commit 54d5ca87 authored by Miklos Szeredi's avatar Miklos Szeredi Committed by Al Viro
Browse files

vfs: add vfs_select_inode() helper 



Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org> # v4.2+
parent 44549e8f

fs/open.c

+4 −8
Original line number Diff line number Diff line
@@ -840,16 +840,12 @@ EXPORT_SYMBOL(file_path); 
int vfs_open(const struct path *path, struct file *file,

	     const struct cred *cred)

{

	struct dentry *dentry = path->dentry;

	struct inode *inode = dentry->d_inode;

	struct inode *inode = vfs_select_inode(path->dentry, file->f_flags);



	file->f_path = *path;

	if (dentry->d_flags & DCACHE_OP_SELECT_INODE) {

		inode = dentry->d_op->d_select_inode(dentry, file->f_flags);

	if (IS_ERR(inode))

		return PTR_ERR(inode);

	}



	file->f_path = *path;

	return do_dentry_open(file, inode, NULL, cred);

}

include/linux/dcache.h

+12 −0
Original line number Diff line number Diff line
@@ -565,4 +565,16 @@ static inline struct dentry *d_real(struct dentry *dentry) 
		return dentry;

}



static inline struct inode *vfs_select_inode(struct dentry *dentry,

					     unsigned open_flags)

{

	struct inode *inode = d_inode(dentry);



	if (inode && unlikely(dentry->d_flags & DCACHE_OP_SELECT_INODE))

		inode = dentry->d_op->d_select_inode(dentry, open_flags);



	return inode;

}





#endif	/* __LINUX_DCACHE_H */