On Wed, 17 Jun 2015 16:46:35 +0200
Thomas de Beauchene <thomas.chauvot-de-beauchene@xxxxxxxxxx> wrote:
> Updated struct inode_operations documentation in vfs.txt to match
> current implementation
Looks good at a first glance, will probably queue it later. But please be
sure to CC Al Viro (added) on patches like this; he's the expert in this
area.
Thanks,
jon
> Signed-off-by: Thomas de Beauchene <chauvo_t@xxxxxxxxxx>
> ---
> Documentation/filesystems/vfs.txt | 30 +++++++++++++++++++-----------
> 1 file changed, 19 insertions(+), 11 deletions(-)
>
> diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
> index 3cb2ccf..ff53e34 100644
> --- a/Documentation/filesystems/vfs.txt
> +++ b/Documentation/filesystems/vfs.txt
> @@ -341,11 +341,18 @@ struct inode_operations
> -----------------------
>
> This describes how the VFS can manipulate an inode in your
> -filesystem. As of kernel 2.6.22, the following members are defined:
> +filesystem. As of kernel 4.1, the following members are defined:
>
> struct inode_operations {
> - int (*create) (struct inode *,struct dentry *, umode_t, bool);
> struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int);
> + void * (*follow_link) (struct dentry *, struct nameidata *);
> + int (*permission) (struct inode *, int);
> + struct posix_acl * (*get_acl)(struct inode *, int);
> +
> + int (*readlink) (struct dentry *, char __user *,int);
> + void (*put_link) (struct dentry *, struct nameidata *, void *);
> +
> + int (*create) (struct inode *,struct dentry *, umode_t, bool);
> int (*link) (struct dentry *,struct inode *,struct dentry *);
> int (*unlink) (struct inode *,struct dentry *);
> int (*symlink) (struct inode *,struct dentry *,const char *);
> @@ -356,23 +363,24 @@ struct inode_operations {
> struct inode *, struct dentry *);
> int (*rename2) (struct inode *, struct dentry *,
> struct inode *, struct dentry *, unsigned int);
> - int (*readlink) (struct dentry *, char __user *,int);
> - void * (*follow_link) (struct dentry *, struct nameidata *);
> - void (*put_link) (struct dentry *, struct nameidata *, void *);
> - int (*permission) (struct inode *, int);
> - int (*get_acl)(struct inode *, int);
> int (*setattr) (struct dentry *, struct iattr *);
> int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *);
> int (*setxattr) (struct dentry *, const char *,const void *,size_t,int);
> ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
> ssize_t (*listxattr) (struct dentry *, char *, size_t);
> int (*removexattr) (struct dentry *, const char *);
> - void (*update_time)(struct inode *, struct timespec *, int);
> - int (*atomic_open)(struct inode *, struct dentry *, struct file *,
> - unsigned open_flag, umode_t create_mode, int *opened);
> + int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start,
> + u64 len);
> + int (*update_time)(struct inode *, struct timespec *, int);
> + int (*atomic_open)(struct inode *, struct dentry *,
> + struct file *, unsigned open_flag,
> + umode_t create_mode, int *opened);
> int (*tmpfile) (struct inode *, struct dentry *, umode_t);
> + int (*set_acl)(struct inode *, struct posix_acl *, int);
> +
> + /* WARNING: probably going away soon, do not use! */
> int (*dentry_open)(struct dentry *, struct file *, const struct cred *);
> -};
> +} ____cacheline_aligned;
>
> Again, all methods are called without any locks being held, unless
> otherwise noted.
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