Re: [PATCH] VFS: Rename do_fallocate() to vfs_fallocate()

["J. Bruce Fields" <bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>]

On Wed, Oct 01, 2014 at 03:15:07PM -0400, Anna Schumaker wrote:
> From: Anna Schumaker <Anna.Schumaker-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org>
> 
> This function needs to be exported so it can be used by the NFSD module
> when responding to the new ALLOCATE and DEALLOCATE operations in NFS
> v4.2.  Christoph Hellwig suggested renaming the function to stay
> consistent with how other vfs functions are named.

ALLOCATE/DEALLOCATE have already gotten some review and look close to
done, so will probably be in 3.19, and having this in now would simplify
merging--ACK.

--b.

> 
> Signed-off-by: Anna Schumaker <Anna.Schumaker-ZwjVKphTwtPQT0dZR+AlfA@public.gmane.org>
> ---
>  drivers/staging/android/ashmem.c | 2 +-
>  fs/ioctl.c                       | 2 +-
>  fs/open.c                        | 5 +++--
>  include/linux/fs.h               | 2 +-
>  mm/madvise.c                     | 2 +-
>  5 files changed, 7 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c
> index 713a972..9c799987 100644
> --- a/drivers/staging/android/ashmem.c
> +++ b/drivers/staging/android/ashmem.c
> @@ -446,7 +446,7 @@ ashmem_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
>  		loff_t start = range->pgstart * PAGE_SIZE;
>  		loff_t end = (range->pgend + 1) * PAGE_SIZE;
>  
> -		do_fallocate(range->asma->file,
> +		vfs_fallocate(range->asma->file,
>  				FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
>  				start, end - start);
>  		range->purged = ASHMEM_WAS_PURGED;
> diff --git a/fs/ioctl.c b/fs/ioctl.c
> index 8ac3fad..0bd61421 100644
> --- a/fs/ioctl.c
> +++ b/fs/ioctl.c
> @@ -443,7 +443,7 @@ int ioctl_preallocate(struct file *filp, void __user *argp)
>  		return -EINVAL;
>  	}
>  
> -	return do_fallocate(filp, FALLOC_FL_KEEP_SIZE, sr.l_start, sr.l_len);
> +	return vfs_fallocate(filp, FALLOC_FL_KEEP_SIZE, sr.l_start, sr.l_len);
>  }
>  
>  static int file_ioctl(struct file *filp, unsigned int cmd,
> diff --git a/fs/open.c b/fs/open.c
> index d6fd3ac..c94449b 100644
> --- a/fs/open.c
> +++ b/fs/open.c
> @@ -222,7 +222,7 @@ SYSCALL_DEFINE2(ftruncate64, unsigned int, fd, loff_t, length)
>  #endif /* BITS_PER_LONG == 32 */
>  
>  
> -int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
> +int vfs_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
>  {
>  	struct inode *inode = file_inode(file);
>  	long ret;
> @@ -298,6 +298,7 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
>  	sb_end_write(inode->i_sb);
>  	return ret;
>  }
> +EXPORT_SYMBOL_GPL(vfs_fallocate);
>  
>  SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len)
>  {
> @@ -305,7 +306,7 @@ SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len)
>  	int error = -EBADF;
>  
>  	if (f.file) {
> -		error = do_fallocate(f.file, mode, offset, len);
> +		error = vfs_fallocate(f.file, mode, offset, len);
>  		fdput(f);
>  	}
>  	return error;
> diff --git a/include/linux/fs.h b/include/linux/fs.h
> index 9418772..476f555 100644
> --- a/include/linux/fs.h
> +++ b/include/linux/fs.h
> @@ -2049,7 +2049,7 @@ struct filename {
>  extern long vfs_truncate(struct path *, loff_t);
>  extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs,
>  		       struct file *filp);
> -extern int do_fallocate(struct file *file, int mode, loff_t offset,
> +extern int vfs_fallocate(struct file *file, int mode, loff_t offset,
>  			loff_t len);
>  extern long do_sys_open(int dfd, const char __user *filename, int flags,
>  			umode_t mode);
> diff --git a/mm/madvise.c b/mm/madvise.c
> index 0938b30..a271adc 100644
> --- a/mm/madvise.c
> +++ b/mm/madvise.c
> @@ -326,7 +326,7 @@ static long madvise_remove(struct vm_area_struct *vma,
>  	 */
>  	get_file(f);
>  	up_read(&current->mm->mmap_sem);
> -	error = do_fallocate(f,
> +	error = vfs_fallocate(f,
>  				FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
>  				offset, end - start);
>  	fput(f);
> -- 
> 2.1.1
> 
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