nathan/Chromebook-Device-Nyan-NVIDIA-Tegra-K1-T124-Upstream-Linux-3.10-LTS-Kernel
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Backported memfd_create() system call

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Nathan
2025-04-07 00:23:38 -05:00
parent 3d1c55ae1e
commit eee847d17d
12 changed files with 258 additions and 1 deletions
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17
include/linux/shmem_fs.h
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@@ -1,6 +1,7 @@
#ifndef __SHMEM_FS_H
#define __SHMEM_FS_H
#include <linux/file.h>
#include <linux/swap.h>
#include <linux/mempolicy.h>
#include <linux/pagemap.h>
@@ -11,6 +12,7 @@
struct shmem_inode_info {
spinlock_t lock;
unsigned int seals; /* shmem seals */
unsigned long flags;
unsigned long alloced; /* data pages alloced to file */
union {
@@ -62,4 +64,19 @@ static inline struct page *shmem_read_mapping_page(
mapping_gfp_mask(mapping));
}
#ifdef CONFIG_TMPFS
extern int shmem_add_seals(struct file *file, unsigned int seals);
extern int shmem_get_seals(struct file *file);
extern long shmem_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
#else
static inline long shmem_fcntl(struct file *f, unsigned int c, unsigned long a)
{
return -EINVAL;
}
#endif
#endif