[PATCH v6 07/21] fsnotify: Add helper to detect overflow_event
From: Gabriel Krisman Bertazi <hidden>
Date: 2021-08-12 21:40:57
Also in:
linux-api, linux-fsdevel
Subsystem:
fanotify, filesystems (vfs and infrastructure), fsnotify: filesystem notification infrastructure, the rest · Maintainers:
Jan Kara, Alexander Viro, Christian Brauner, Linus Torvalds
Similarly to fanotify_is_perm_event and friends, provide a helper predicate to say whether a mask is of an overflow event. Suggested-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Gabriel Krisman Bertazi <redacted> --- fs/notify/fanotify/fanotify.h | 3 ++- include/linux/fsnotify_backend.h | 5 +++++ 2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/fs/notify/fanotify/fanotify.h b/fs/notify/fanotify/fanotify.h
index 3b11dd03df59..b3ab620822c2 100644
--- a/fs/notify/fanotify/fanotify.h
+++ b/fs/notify/fanotify/fanotify.h@@ -335,7 +335,8 @@ static inline struct path *fanotify_event_path(struct fanotify_event *event) */ static inline bool fanotify_is_hashed_event(u32 mask) { - return !fanotify_is_perm_event(mask) && !(mask & FS_Q_OVERFLOW); + return !(fanotify_is_perm_event(mask) || + fsnotify_is_overflow_event(mask)); } static inline unsigned int fanotify_event_hash_bucket(
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index ae1bd9f06808..cb75fb6d130a 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h@@ -506,6 +506,11 @@ static inline void fsnotify_queue_overflow(struct fsnotify_group *group) fsnotify_add_event(group, group->overflow_event, NULL, NULL); } +static inline bool fsnotify_is_overflow_event(u32 mask) +{ + return mask & FS_Q_OVERFLOW; +} + static inline bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group) { assert_spin_locked(&group->notification_lock);
--
2.32.0