korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-24 12:44:11 +08:00
Code Issues Packages Projects Releases Wiki Activity

fsnotify: Add fsnotify_sb_has_watchers() helper

Browse Source 
Instead of opencoded checks for number of fsnotify connectors add a
helper fsnotify_sb_has_watchers().

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Amir Goldstein 2024-01-24 16:29:33 +01:00 committed by Jan Kara
parent 082fd1ea1f
commit b7dbaace39
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
include/linux/fsnotify.h
View File

@ -17,6 +17,12 @@
#include <linux/slab.h>
#include <linux/bug.h>
/* Are there any inode/mount/sb objects that are being watched at all? */
static inline bool fsnotify_sb_has_watchers(struct super_block *sb)
{
return atomic_long_read(&sb->s_fsnotify_connectors);
}
/*
* Notify this @dir inode about a change in a child directory entry.
* The directory entry may have turned positive or negative or its inode may
@ -30,7 +36,7 @@ static inline int fsnotify_name(__u32 mask, const void *data, int data_type,
struct inode *dir, const struct qstr *name,
u32 cookie)
{
if (atomic_long_read(&dir->i_sb->s_fsnotify_connectors) == 0)
if (!fsnotify_sb_has_watchers(dir->i_sb))
return 0;
return fsnotify(mask, data, data_type, dir, name, NULL, cookie);
@ -44,7 +50,7 @@ static inline void fsnotify_dirent(struct inode *dir, struct dentry *dentry,
static inline void fsnotify_inode(struct inode *inode, __u32 mask)
{
if (atomic_long_read(&inode->i_sb->s_fsnotify_connectors) == 0)
if (!fsnotify_sb_has_watchers(inode->i_sb))
return;
if (S_ISDIR(inode->i_mode))
@ -59,7 +65,7 @@ static inline int fsnotify_parent(struct dentry *dentry, __u32 mask,
{
struct inode *inode = d_inode(dentry);
if (atomic_long_read(&inode->i_sb->s_fsnotify_connectors) == 0)
if (!fsnotify_sb_has_watchers(inode->i_sb))
return 0;
if (S_ISDIR(inode->i_mode)) {