# \[PATCH v3 06/15\] fsnotify: Add helper to detect overflow\_event - From: Gabriel Krisman Bertazi \ - Date: 2021-06-29 19:12:31 - List: linux-ext4 - Page: https://ratatoskr.run/linux-ext4/2021/06/208955 - Thread: https://ratatoskr.run/linux-fsdevel/2021/06/208949/t.md ```text 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 Reviewed-by: Amir Goldstein Signed-off-by: Gabriel Krisman Bertazi --- 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 fd125a949187..2e005b3a75f2 100644 --- a/fs/notify/fanotify/fanotify.h +++ b/fs/notify/fanotify/fanotify.h @@ -328,7 +328,8 @@ 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 c4473b467c28..f9e2c6cd0f7d 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -495,6 +495,11 @@ 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 ```