linux-kernel - Re: [PATCH 19/24] tmpfs: add setlease file operation

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Message-ID: <5dtyb6by4ujjnkjz6lu4rl2x3s5km6awilvrozuzmgq2wn7bl6@cxvq3jpviunf>
Date: Thu, 8 Jan 2026 18:31:54 +0100
From: Jan Kara <jack@...e.cz>
To: Jeff Layton <jlayton@...nel.org>
Cc: Luis de Bethencourt <luisbg@...nel.org>, 
	Salah Triki <salah.triki@...il.com>, Nicolas Pitre <nico@...xnic.net>, 
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Subject: Re: [PATCH 19/24] tmpfs: add setlease file operation

On Thu 08-01-26 12:13:14, Jeff Layton wrote:
> Add the setlease file_operation pointing to generic_setlease to the
> tmpfs file_operations structures. A future patch will change the
> default behavior to reject lease attempts with -EINVAL when there is no
> setlease file operation defined. Add generic_setlease to retain the
> ability to set leases on this filesystem.
> 
> Signed-off-by: Jeff Layton <jlayton@...nel.org>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  fs/libfs.c | 2 ++
>  mm/shmem.c | 2 ++
>  2 files changed, 4 insertions(+)
> 
> diff --git a/fs/libfs.c b/fs/libfs.c
> index 591eb649ebbacf202ff48cd3abd64a175daa291c..697c6d5fc12786c036f0086886297fb5cd52ae00 100644
> --- a/fs/libfs.c
> +++ b/fs/libfs.c
> @@ -6,6 +6,7 @@
>  
>  #include <linux/blkdev.h>
>  #include <linux/export.h>
> +#include <linux/filelock.h>
>  #include <linux/pagemap.h>
>  #include <linux/slab.h>
>  #include <linux/cred.h>
> @@ -570,6 +571,7 @@ const struct file_operations simple_offset_dir_operations = {
>  	.iterate_shared	= offset_readdir,
>  	.read		= generic_read_dir,
>  	.fsync		= noop_fsync,
> +	.setlease	= generic_setlease,
>  };
>  
>  struct dentry *find_next_child(struct dentry *parent, struct dentry *prev)
> diff --git a/mm/shmem.c b/mm/shmem.c
> index ec6c01378e9d2bd47db9d7506e4d6a565e092185..88ef1fd5cd38efedbb31353da2871ab1d47e68a5 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -29,6 +29,7 @@
>  #include <linux/pagemap.h>
>  #include <linux/file.h>
>  #include <linux/fileattr.h>
> +#include <linux/filelock.h>
>  #include <linux/mm.h>
>  #include <linux/random.h>
>  #include <linux/sched/signal.h>
> @@ -5219,6 +5220,7 @@ static const struct file_operations shmem_file_operations = {
>  	.splice_read	= shmem_file_splice_read,
>  	.splice_write	= iter_file_splice_write,
>  	.fallocate	= shmem_fallocate,
> +	.setlease	= generic_setlease,
>  #endif
>  };
>  
> 
> -- 
> 2.52.0
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR