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fsnotify: move mask out of struct fsnotify_event

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Common fsnotify_event helpers have no need for the mask field.
It is only used by backend code, so move the field out of the
abstract fsnotify_event struct and into the concrete backend
event structs.

This change packs struct inotify_event_info better on 64bit
machine and will allow us to cram some more fields into
struct fanotify_event_info.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Amir Goldstein
2019-01-10 19:04:31 +02:00
committed by Jan Kara
parent 45a9fb3725
commit a0a92d261f
8 changed files with 29 additions and 40 deletions
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10
fs/notify/fanotify/fanotify_user.c
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@@ -131,9 +131,9 @@ static int fill_event_metadata(struct fsnotify_group *group,
metadata->metadata_len = FAN_EVENT_METADATA_LEN;
metadata->vers = FANOTIFY_METADATA_VERSION;
metadata->reserved = 0;
metadata->mask = fsn_event->mask & FANOTIFY_OUTGOING_EVENTS;
metadata->mask = event->mask & FANOTIFY_OUTGOING_EVENTS;
metadata->pid = pid_vnr(event->pid);
if (unlikely(fsn_event->mask & FAN_Q_OVERFLOW))
if (unlikely(event->mask & FAN_Q_OVERFLOW))
metadata->fd = FAN_NOFD;
else {
metadata->fd = create_fd(group, event, file);
@@ -230,7 +230,7 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group,
fanotify_event_metadata.event_len))
goto out_close_fd;
if (fanotify_is_perm_event(event->mask))
if (fanotify_is_perm_event(FANOTIFY_E(event)->mask))
FANOTIFY_PE(event)->fd = fd;
if (fd != FAN_NOFD)
@@ -316,7 +316,7 @@ static ssize_t fanotify_read(struct file *file, char __user *buf,
* Permission events get queued to wait for response. Other
* events can be destroyed now.
*/
if (!fanotify_is_perm_event(kevent->mask)) {
if (!fanotify_is_perm_event(FANOTIFY_E(kevent)->mask)) {
fsnotify_destroy_event(group, kevent);
} else {
if (ret <= 0) {
@@ -401,7 +401,7 @@ static int fanotify_release(struct inode *ignored, struct file *file)
*/
while (!fsnotify_notify_queue_is_empty(group)) {
fsn_event = fsnotify_remove_first_event(group);
if (!(fsn_event->mask & FANOTIFY_PERM_EVENTS)) {
if (!(FANOTIFY_E(fsn_event)->mask & FANOTIFY_PERM_EVENTS)) {
spin_unlock(&group->notification_lock);
fsnotify_destroy_event(group, fsn_event);
spin_lock(&group->notification_lock);