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| author | Amir Goldstein <amir73il@gmail.com> | 2018-04-21 02:10:52 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2018-05-18 15:58:22 +0300 |
| commit | 47d9c7cc457adc5d6d8ca966482a51459f81e852 (patch) | |
| tree | 5022fd69ab92a6f522b55ddb69b9ea2b22d84590 /include/linux/fsnotify_backend.h | |
| parent | d9a6f30bb89309a7f2473028a00b83b020049cb4 (diff) | |
| download | linux-47d9c7cc457adc5d6d8ca966482a51459f81e852.tar.xz | |
fsnotify: generalize iteration of marks by object type
Make some code that handles marks of object types inode and vfsmount
generic, so it can handle other object types.
Introduce fsnotify_foreach_obj_type macro to iterate marks by object type
and fsnotify_iter_{should|set}_report_type macros to set/test report_mask.
This is going to be used for adding mark of another object type
(super block mark).
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'include/linux/fsnotify_backend.h')
| -rw-r--r-- | include/linux/fsnotify_backend.h | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 9da5edf4ac0f..763423bfa3d6 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -211,23 +211,45 @@ enum fsnotify_obj_type { #define FSNOTIFY_OBJ_ALL_TYPES_MASK ((1U << FSNOTIFY_OBJ_TYPE_COUNT) - 1) struct fsnotify_iter_info { - struct fsnotify_mark *inode_mark; - struct fsnotify_mark *vfsmount_mark; + struct fsnotify_mark *marks[FSNOTIFY_OBJ_TYPE_COUNT]; unsigned int report_mask; int srcu_idx; }; +static inline bool fsnotify_iter_should_report_type( + struct fsnotify_iter_info *iter_info, int type) +{ + return (iter_info->report_mask & (1U << type)); +} + +static inline void fsnotify_iter_set_report_type( + struct fsnotify_iter_info *iter_info, int type) +{ + iter_info->report_mask |= (1U << type); +} + +static inline void fsnotify_iter_set_report_type_mark( + struct fsnotify_iter_info *iter_info, int type, + struct fsnotify_mark *mark) +{ + iter_info->marks[type] = mark; + iter_info->report_mask |= (1U << type); +} + #define FSNOTIFY_ITER_FUNCS(name, NAME) \ static inline struct fsnotify_mark *fsnotify_iter_##name##_mark( \ struct fsnotify_iter_info *iter_info) \ { \ return (iter_info->report_mask & FSNOTIFY_OBJ_TYPE_##NAME##_FL) ? \ - iter_info->name##_mark : NULL; \ + iter_info->marks[FSNOTIFY_OBJ_TYPE_##NAME] : NULL; \ } FSNOTIFY_ITER_FUNCS(inode, INODE) FSNOTIFY_ITER_FUNCS(vfsmount, VFSMOUNT) +#define fsnotify_foreach_obj_type(type) \ + for (type = 0; type < FSNOTIFY_OBJ_TYPE_COUNT; type++) + /* * Inode / vfsmount point to this structure which tracks all marks attached to * the inode / vfsmount. The reference to inode / vfsmount is held by this |