tmpfs: add setlease file operation

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@kernel.org>
Link: https://patch.msgid.link/20260108-setlease-6-20-v1-19-ea4dec9b67fa@kernel.org
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/fs/libfs.c b/fs/libfs.c
index 591eb649ebbacf202ff48cd3abd64a175daa291c..697c6d5fc12786c036f0086886297fb5cd52ae00 100644 (file)
--- 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 (file)
--- 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
 };