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fsnotify: simplify arguments passing to fsnotify_parent() 

Instead of passing both dentry and path and having to figure out which
one to use, pass data/data_type to simplify the code.

Link: https://lore.kernel.org/r/20200319151022.31456-6-amir73il@gmail.com
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
alistair/sensors
Amir Goldstein 2020-03-19 17:10:13 +02:00 committed by Jan Kara
parent aa93bdc550
commit 017de65fe5
3 changed files with 14 additions and 29 deletions
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15
fs/notify/fsnotify.c
View File

@ -143,15 +143,13 @@ void __fsnotify_update_child_dentry_flags(struct inode *inode)
}
/* Notify this dentry's parent about a child's events. */
int __fsnotify_parent(const struct path *path, struct dentry *dentry, __u32 mask)
int fsnotify_parent(struct dentry *dentry, __u32 mask, const void *data,
int data_type)
{
struct dentry *parent;
struct inode *p_inode;
int ret = 0;
if (!dentry)
dentry = path->dentry;
if (!(dentry->d_flags & DCACHE_FSNOTIFY_PARENT_WATCHED))
return 0;
@ -168,12 +166,7 @@ int __fsnotify_parent(const struct path *path, struct dentry *dentry, __u32 mask
mask |= FS_EVENT_ON_CHILD;
take_dentry_name_snapshot(&name, dentry);
if (path)
ret = fsnotify(p_inode, mask, path, FSNOTIFY_EVENT_PATH,
&name.name, 0);
else
ret = fsnotify(p_inode, mask, dentry->d_inode, FSNOTIFY_EVENT_INODE,
&name.name, 0);
ret = fsnotify(p_inode, mask, data, data_type, &name.name, 0);
release_dentry_name_snapshot(&name);
}
@ -181,7 +174,7 @@ int __fsnotify_parent(const struct path *path, struct dentry *dentry, __u32 mask
return ret;
}
EXPORT_SYMBOL_GPL(__fsnotify_parent);
EXPORT_SYMBOL_GPL(fsnotify_parent);
static int send_to_group(struct inode *to_tell,
__u32 mask, const void *data,

14
include/linux/fsnotify.h
View File

@ -38,16 +38,6 @@ static inline void fsnotify_dirent(struct inode *dir, struct dentry *dentry,
fsnotify_name(dir, mask, d_inode(dentry), &dentry->d_name, 0);
}
/* Notify this dentry's parent about a child's events. */
static inline int fsnotify_parent(const struct path *path,
struct dentry *dentry, __u32 mask)
{
if (!dentry)
dentry = path->dentry;
return __fsnotify_parent(path, dentry, mask);
}
/*
* Simple wrappers to consolidate calls fsnotify_parent()/fsnotify() when
* an event is on a file/dentry.
@ -59,7 +49,7 @@ static inline void fsnotify_dentry(struct dentry *dentry, __u32 mask)
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
fsnotify_parent(NULL, dentry, mask);
fsnotify_parent(dentry, mask, inode, FSNOTIFY_EVENT_INODE);
fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
}
@ -75,7 +65,7 @@ static inline int fsnotify_file(struct file *file, __u32 mask)
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
ret = fsnotify_parent(path, NULL, mask);
ret = fsnotify_parent(path->dentry, mask, path, FSNOTIFY_EVENT_PATH);
if (ret)
return ret;

14
include/linux/fsnotify_backend.h
View File

@ -376,9 +376,10 @@ struct fsnotify_mark {
/* called from the vfs helpers */
/* main fsnotify call to send events */
extern int fsnotify(struct inode *to_tell, __u32 mask, const void *data, int data_is,
const struct qstr *name, u32 cookie);
extern int __fsnotify_parent(const struct path *path, struct dentry *dentry, __u32 mask);
extern int fsnotify(struct inode *to_tell, __u32 mask, const void *data,
int data_type, const struct qstr *name, u32 cookie);
extern int fsnotify_parent(struct dentry *dentry, __u32 mask, const void *data,
int data_type);
extern void __fsnotify_inode_delete(struct inode *inode);
extern void __fsnotify_vfsmount_delete(struct vfsmount *mnt);
extern void fsnotify_sb_delete(struct super_block *sb);
@ -533,13 +534,14 @@ static inline void fsnotify_init_event(struct fsnotify_event *event,
#else
static inline int fsnotify(struct inode *to_tell, __u32 mask, const void *data, int data_is,
const struct qstr *name, u32 cookie)
static inline int fsnotify(struct inode *to_tell, __u32 mask, const void *data,
int data_type, const struct qstr *name, u32 cookie)
{
return 0;
}
static inline int __fsnotify_parent(const struct path *path, struct dentry *dentry, __u32 mask)
static inline int fsnotify_parent(struct dentry *dentry, __u32 mask,
const void *data, int data_type)
{
return 0;
}