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fsnotify: kill FSNOTIFY_EVENT_FILE 

Some fsnotify operations send a struct file.  This is more information than
we technically need.  We instead send a struct path in all cases instead of
sometimes a path and sometimes a file.

Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
Andreas Gruenbacher 2009-12-17 21:24:24 -05:00 коммит произвёл Eric Paris
Родитель 098cf2fc77
Коммит 72acc85442
4 изменённых файлов: 26 добавлений и 36 удалений
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12
fs/notify/fsnotify.c
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@ -79,15 +79,15 @@ void __fsnotify_update_child_dentry_flags(struct inode *inode)
}
/* Notify this dentry's parent about a child's events. */
void __fsnotify_parent(struct file *file, struct dentry *dentry, __u32 mask)
void __fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask)
{
struct dentry *parent;
struct inode *p_inode;
bool send = false;
bool should_update_children = false;
if (file)
dentry = file->f_path.dentry;
if (!dentry)
dentry = path->dentry;
if (!(dentry->d_flags & DCACHE_FSNOTIFY_PARENT_WATCHED))
return;
@ -119,8 +119,8 @@ void __fsnotify_parent(struct file *file, struct dentry *dentry, __u32 mask)
* specifies these are events which came from a child. */
mask |= FS_EVENT_ON_CHILD;
if (file)
fsnotify(p_inode, mask, file, FSNOTIFY_EVENT_FILE,
if (path)
fsnotify(p_inode, mask, path, FSNOTIFY_EVENT_PATH,
dentry->d_name.name, 0);
else
fsnotify(p_inode, mask, dentry->d_inode, FSNOTIFY_EVENT_INODE,
@ -194,8 +194,6 @@ void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, const
if (data_is == FSNOTIFY_EVENT_PATH)
mnt = ((struct path *)data)->mnt;
else if (data_is == FSNOTIFY_EVENT_FILE)
mnt = ((struct file *)data)->f_path.mnt;
/* if this inode's directed listeners don't care and nothing on the vfsmount
* listeners list cares, nothing to do */

9
fs/notify/notification.c
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@ -390,15 +390,6 @@ struct fsnotify_event *fsnotify_create_event(struct inode *to_tell, __u32 mask,
event->data_type = data_type;
switch (data_type) {
case FSNOTIFY_EVENT_FILE: {
struct file *file = data;
struct path *path = &file->f_path;
event->path.dentry = path->dentry;
event->path.mnt = path->mnt;
path_get(&event->path);
event->data_type = FSNOTIFY_EVENT_PATH;
break;
}
case FSNOTIFY_EVENT_PATH: {
struct path *path = data;
event->path.dentry = path->dentry;

36
include/linux/fsnotify.h
Просмотреть файл

@ -26,14 +26,12 @@ static inline void fsnotify_d_instantiate(struct dentry *entry,
}
/* Notify this dentry's parent about a child's events. */
static inline void fsnotify_parent(struct file *file, struct dentry *dentry, __u32 mask)
static inline void fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask)
{
BUG_ON(file && dentry);
if (!dentry)
dentry = path->dentry;
if (file)
dentry = file->f_path.dentry;
__fsnotify_parent(file, dentry, mask);
__fsnotify_parent(path, dentry, mask);
}
/*
@ -160,14 +158,15 @@ static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
*/
static inline void fsnotify_access(struct file *file)
{
struct inode *inode = file->f_path.dentry->d_inode;
struct path *path = &file->f_path;
struct inode *inode = path->dentry->d_inode;
__u32 mask = FS_ACCESS;
if (S_ISDIR(inode->i_mode))
mask |= FS_IN_ISDIR;
fsnotify_parent(file, NULL, mask);
fsnotify(inode, mask, file, FSNOTIFY_EVENT_FILE, NULL, 0);
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
/*
@ -175,14 +174,15 @@ static inline void fsnotify_access(struct file *file)
*/
static inline void fsnotify_modify(struct file *file)
{
struct inode *inode = file->f_path.dentry->d_inode;
struct path *path = &file->f_path;
struct inode *inode = path->dentry->d_inode;
__u32 mask = FS_MODIFY;
if (S_ISDIR(inode->i_mode))
mask |= FS_IN_ISDIR;
fsnotify_parent(file, NULL, mask);
fsnotify(inode, mask, file, FSNOTIFY_EVENT_FILE, NULL, 0);
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
/*
@ -190,14 +190,15 @@ static inline void fsnotify_modify(struct file *file)
*/
static inline void fsnotify_open(struct file *file)
{
struct inode *inode = file->f_path.dentry->d_inode;
struct path *path = &file->f_path;
struct inode *inode = path->dentry->d_inode;
__u32 mask = FS_OPEN;
if (S_ISDIR(inode->i_mode))
mask |= FS_IN_ISDIR;
fsnotify_parent(file, NULL, mask);
fsnotify(inode, mask, file, FSNOTIFY_EVENT_FILE, NULL, 0);
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
/*
@ -205,6 +206,7 @@ static inline void fsnotify_open(struct file *file)
*/
static inline void fsnotify_close(struct file *file)
{
struct path *path = &file->f_path;
struct inode *inode = file->f_path.dentry->d_inode;
fmode_t mode = file->f_mode;
__u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE;
@ -212,8 +214,8 @@ static inline void fsnotify_close(struct file *file)
if (S_ISDIR(inode->i_mode))
mask |= FS_IN_ISDIR;
fsnotify_parent(file, NULL, mask);
fsnotify(inode, mask, file, FSNOTIFY_EVENT_FILE, NULL, 0);
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
/*

5
include/linux/fsnotify_backend.h
Просмотреть файл

@ -214,7 +214,6 @@ struct fsnotify_event {
#define FSNOTIFY_EVENT_NONE 0
#define FSNOTIFY_EVENT_PATH 1
#define FSNOTIFY_EVENT_INODE 2
#define FSNOTIFY_EVENT_FILE 3
int data_type; /* which of the above union we have */
atomic_t refcnt; /* how many groups still are using/need to send this event */
__u32 mask; /* the type of access, bitwise OR for FS_* event types */
@ -280,7 +279,7 @@ struct fsnotify_mark_entry {
/* main fsnotify call to send events */
extern void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is,
const char *name, u32 cookie);
extern void __fsnotify_parent(struct file *file, struct dentry *dentry, __u32 mask);
extern void __fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask);
extern void __fsnotify_inode_delete(struct inode *inode);
extern u32 fsnotify_get_cookie(void);
@ -393,7 +392,7 @@ static inline void fsnotify(struct inode *to_tell, __u32 mask, void *data, int d
const char *name, u32 cookie)
{}
static inline void __fsnotify_parent(struct file *file, struct dentry *dentry, __u32 mask)
static inline void __fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask)
{}
static inline void __fsnotify_inode_delete(struct inode *inode)