new helper: file_inode(file)

[mirror_ubuntu-artful-kernel.git] / mm / shmem.c

diff --git a/mm/shmem.c b/mm/shmem.c
index 5dd56f6efdbd593733b793df2731f243dbaf031c..814d5546cb35c80cf33cdcf2467edaa53134965e 100644 (file)
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1295,7 +1295,7 @@ unlock:
 
 static int shmem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-       struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
+       struct inode *inode = file_inode(vma->vm_file);
        int error;
        int ret = VM_FAULT_LOCKED;
 
@@ -1313,14 +1313,14 @@ static int shmem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 #ifdef CONFIG_NUMA
 static int shmem_set_policy(struct vm_area_struct *vma, struct mempolicy *mpol)
 {
-       struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
+       struct inode *inode = file_inode(vma->vm_file);
        return mpol_set_shared_policy(&SHMEM_I(inode)->policy, vma, mpol);
 }
 
 static struct mempolicy *shmem_get_policy(struct vm_area_struct *vma,
                                          unsigned long addr)
 {
-       struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
+       struct inode *inode = file_inode(vma->vm_file);
        pgoff_t index;
 
        index = ((addr - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
@@ -1330,7 +1330,7 @@ static struct mempolicy *shmem_get_policy(struct vm_area_struct *vma,
 
 int shmem_lock(struct file *file, int lock, struct user_struct *user)
 {
-       struct inode *inode = file->f_path.dentry->d_inode;
+       struct inode *inode = file_inode(file);
        struct shmem_inode_info *info = SHMEM_I(inode);
        int retval = -ENOMEM;
 
@@ -1465,7 +1465,7 @@ shmem_write_end(struct file *file, struct address_space *mapping,
 
 static void do_shmem_file_read(struct file *filp, loff_t *ppos, read_descriptor_t *desc, read_actor_t actor)
 {
-       struct inode *inode = filp->f_path.dentry->d_inode;
+       struct inode *inode = file_inode(filp);
        struct address_space *mapping = inode->i_mapping;
        pgoff_t index;
        unsigned long offset;
@@ -1808,7 +1808,7 @@ static loff_t shmem_file_llseek(struct file *file, loff_t offset, int whence)
 static long shmem_fallocate(struct file *file, int mode, loff_t offset,
                                                         loff_t len)
 {
-       struct inode *inode = file->f_path.dentry->d_inode;
+       struct inode *inode = file_inode(file);
        struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
        struct shmem_falloc shmem_falloc;
        pgoff_t start, index, end;