diff options
| author | Gabriel Krisman Bertazi <krisman@collabora.com> | 2021-10-25 21:27:34 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2021-10-27 12:35:05 +0200 |
| commit | 734a1a5eccc5f7473002b0669f788e135f1f64aa (patch) | |
| tree | 9a2bf10a36c11cd378181c3cefba5440391715a5 /fs/notify/fanotify/fanotify.c | |
| parent | fanotify: Reserve UAPI bits for FAN_FS_ERROR (diff) | |
| download | linux-734a1a5eccc5f7473002b0669f788e135f1f64aa.tar.xz linux-734a1a5eccc5f7473002b0669f788e135f1f64aa.zip | |
fanotify: Pre-allocate pool of error events
Pre-allocate slots for file system errors to have greater chances of
succeeding, since error events can happen in GFP_NOFS context. This
patch introduces a group-wide mempool of error events, shared by all
FAN_FS_ERROR marks in this group.
Link: https://lore.kernel.org/r/20211025192746.66445-20-krisman@collabora.com
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify/fanotify/fanotify.c')
| -rw-r--r-- | fs/notify/fanotify/fanotify.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c index 8f152445d75c..01d68dfc74aa 100644 --- a/fs/notify/fanotify/fanotify.c +++ b/fs/notify/fanotify/fanotify.c @@ -819,6 +819,9 @@ static void fanotify_free_group_priv(struct fsnotify_group *group) if (group->fanotify_data.ucounts) dec_ucount(group->fanotify_data.ucounts, UCOUNT_FANOTIFY_GROUPS); + + if (mempool_initialized(&group->fanotify_data.error_events_pool)) + mempool_exit(&group->fanotify_data.error_events_pool); } static void fanotify_free_path_event(struct fanotify_event *event) |