diff options
Diffstat (limited to 'include/linux/shmem_fs.h')
| -rw-r--r-- | include/linux/shmem_fs.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h index 4d1771c2d29f..50777b5b1e4c 100644 --- a/include/linux/shmem_fs.h +++ b/include/linux/shmem_fs.h @@ -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 { @@ -65,4 +67,19 @@ 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 |