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| author | Gabriel Krisman Bertazi <krisman@collabora.com> | 2021-10-25 22:27:34 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2021-10-27 13:35:05 +0300 |
| commit | 734a1a5eccc5f7473002b0669f788e135f1f64aa (patch) | |
| tree | 9a2bf10a36c11cd378181c3cefba5440391715a5 /fs/notify/fanotify/fanotify.h | |
| parent | 8d11a4f43ef4679be0908026907a7613b33d7127 (diff) | |
| download | linux-734a1a5eccc5f7473002b0669f788e135f1f64aa.tar.xz | |
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.h')
| -rw-r--r-- | fs/notify/fanotify/fanotify.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/notify/fanotify/fanotify.h b/fs/notify/fanotify/fanotify.h index c42cf8fd7d79..a577e87fac2b 100644 --- a/fs/notify/fanotify/fanotify.h +++ b/fs/notify/fanotify/fanotify.h @@ -141,6 +141,7 @@ enum fanotify_event_type { FANOTIFY_EVENT_TYPE_PATH, FANOTIFY_EVENT_TYPE_PATH_PERM, FANOTIFY_EVENT_TYPE_OVERFLOW, /* struct fanotify_event */ + FANOTIFY_EVENT_TYPE_FS_ERROR, /* struct fanotify_error_event */ __FANOTIFY_EVENT_TYPE_NUM }; @@ -196,6 +197,16 @@ FANOTIFY_NE(struct fanotify_event *event) return container_of(event, struct fanotify_name_event, fae); } +struct fanotify_error_event { + struct fanotify_event fae; +}; + +static inline struct fanotify_error_event * +FANOTIFY_EE(struct fanotify_event *event) +{ + return container_of(event, struct fanotify_error_event, fae); +} + static inline __kernel_fsid_t *fanotify_event_fsid(struct fanotify_event *event) { if (event->type == FANOTIFY_EVENT_TYPE_FID) |