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authorLinus Torvalds2021-02-22 13:23:29 -0800
committerLinus Torvalds2021-02-22 13:23:29 -0800
commitdb990385427c278eef56aac2e2588ec8b8cab5b4 (patch)
tree3a8af82300f456626fefb7201a8cf216d32011c8
parentd61c6a58ae30e80fb68925877cab06ad7a4ce41e (diff)
parentac7b79fd190b02e7151bc7d2b9da692f537657f3 (diff)
Merge tag 'fsnotify_for_v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify update from Jan Kara: "Make inotify groups be charged against appropriate memcgs" * tag 'fsnotify_for_v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: inotify, memcg: account inotify instances to kmemcg
-rw-r--r--fs/notify/fanotify/fanotify_user.c2
-rw-r--r--fs/notify/group.c25
-rw-r--r--fs/notify/inotify/inotify_user.c4
-rw-r--r--include/linux/fsnotify_backend.h1
4 files changed, 24 insertions, 8 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index dcab112e1f00..b78dd1f88f7c 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -976,7 +976,7 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags)
f_flags |= O_NONBLOCK;
/* fsnotify_alloc_group takes a ref. Dropped in fanotify_release */
- group = fsnotify_alloc_group(&fanotify_fsnotify_ops);
+ group = fsnotify_alloc_user_group(&fanotify_fsnotify_ops);
if (IS_ERR(group)) {
free_uid(user);
return PTR_ERR(group);
diff --git a/fs/notify/group.c b/fs/notify/group.c
index a4a4b1c64d32..ffd723ffe46d 100644
--- a/fs/notify/group.c
+++ b/fs/notify/group.c
@@ -111,14 +111,12 @@ void fsnotify_put_group(struct fsnotify_group *group)
}
EXPORT_SYMBOL_GPL(fsnotify_put_group);
-/*
- * Create a new fsnotify_group and hold a reference for the group returned.
- */
-struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops)
+static struct fsnotify_group *__fsnotify_alloc_group(
+ const struct fsnotify_ops *ops, gfp_t gfp)
{
struct fsnotify_group *group;
- group = kzalloc(sizeof(struct fsnotify_group), GFP_KERNEL);
+ group = kzalloc(sizeof(struct fsnotify_group), gfp);
if (!group)
return ERR_PTR(-ENOMEM);
@@ -139,8 +137,25 @@ struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops)
return group;
}
+
+/*
+ * Create a new fsnotify_group and hold a reference for the group returned.
+ */
+struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops)
+{
+ return __fsnotify_alloc_group(ops, GFP_KERNEL);
+}
EXPORT_SYMBOL_GPL(fsnotify_alloc_group);
+/*
+ * Create a new fsnotify_group and hold a reference for the group returned.
+ */
+struct fsnotify_group *fsnotify_alloc_user_group(const struct fsnotify_ops *ops)
+{
+ return __fsnotify_alloc_group(ops, GFP_KERNEL_ACCOUNT);
+}
+EXPORT_SYMBOL_GPL(fsnotify_alloc_user_group);
+
int fsnotify_fasync(int fd, struct file *file, int on)
{
struct fsnotify_group *group = file->private_data;
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index 59c177011a0f..266d17e8ecb9 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -632,11 +632,11 @@ static struct fsnotify_group *inotify_new_group(unsigned int max_events)
struct fsnotify_group *group;
struct inotify_event_info *oevent;
- group = fsnotify_alloc_group(&inotify_fsnotify_ops);
+ group = fsnotify_alloc_user_group(&inotify_fsnotify_ops);
if (IS_ERR(group))
return group;
- oevent = kmalloc(sizeof(struct inotify_event_info), GFP_KERNEL);
+ oevent = kmalloc(sizeof(struct inotify_event_info), GFP_KERNEL_ACCOUNT);
if (unlikely(!oevent)) {
fsnotify_destroy_group(group);
return ERR_PTR(-ENOMEM);
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index a2e42d3cd87c..e5409b83e731 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -470,6 +470,7 @@ static inline void fsnotify_update_flags(struct dentry *dentry)
/* create a new group */
extern struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops);
+extern struct fsnotify_group *fsnotify_alloc_user_group(const struct fsnotify_ops *ops);
/* get reference to a group */
extern void fsnotify_get_group(struct fsnotify_group *group);
/* drop reference on a group from fsnotify_alloc_group */