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authorThomas de Beauchene <thomas.chauvot-de-beauchene@epitech.eu>2015-06-07 17:30:23 +0300
committerJonathan Corbet <corbet@lwn.net>2015-06-09 02:01:14 +0300
commit0d03943c0b50ad47ec6bb157a5d02d6ba9da477e (patch)
tree64e3e8374606def4fc6cb68538cc94debbf5d19f /Documentation/filesystems/vfs.txt
parentbd55daf48dc9a7583031c6c0c6930d7f836f56af (diff)
downloadlinux-0d03943c0b50ad47ec6bb157a5d02d6ba9da477e.tar.xz
Documentation: filesystems: updated struct file_operations documentation in vfs.txt
Updated struct file_operations documentation in vfs.txt to match current implementation Signed-off-by: Thomas de Beauchene <chauvo_t@epitech.eu> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/filesystems/vfs.txt')
-rw-r--r--Documentation/filesystems/vfs.txt17
1 files changed, 11 insertions, 6 deletions
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 5d833b32bbcd..2dd5274671c8 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -797,7 +797,7 @@ struct file_operations
----------------------
This describes how the VFS can manipulate an open file. As of kernel
-3.12, the following members are defined:
+4.1, the following members are defined:
struct file_operations {
struct module *owner;
@@ -811,8 +811,9 @@ struct file_operations {
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
int (*mmap) (struct file *, struct vm_area_struct *);
+ int (*mremap)(struct file *, struct vm_area_struct *);
int (*open) (struct inode *, struct file *);
- int (*flush) (struct file *);
+ int (*flush) (struct file *, fl_owner_t id);
int (*release) (struct inode *, struct file *);
int (*fsync) (struct file *, loff_t, loff_t, int datasync);
int (*aio_fsync) (struct kiocb *, int datasync);
@@ -822,11 +823,15 @@ struct file_operations {
unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
int (*check_flags)(int);
int (*flock) (struct file *, int, struct file_lock *);
- ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, size_t, unsigned int);
- ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned int);
- int (*setlease)(struct file *, long arg, struct file_lock **, void **);
- long (*fallocate)(struct file *, int mode, loff_t offset, loff_t len);
+ ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
+ ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
+ int (*setlease)(struct file *, long, struct file_lock **, void **);
+ long (*fallocate)(struct file *file, int mode, loff_t offset,
+ loff_t len);
void (*show_fdinfo)(struct seq_file *m, struct file *f);
+#ifndef CONFIG_MMU
+ unsigned (*mmap_capabilities)(struct file *);
+#endif
};
Again, all methods are called without any locks being held, unless