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    Subject[PATCH 1/4] fanotify: Shrink struct fanotify_event_metadata by 32 bits
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    And this saves additional 32 bits in the future

    Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>
    ---
    include/linux/fanotify.h | 7 ++++---
    1 files changed, 4 insertions(+), 3 deletions(-)

    diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h
    index 0f01214..9a7986f 100644
    --- a/include/linux/fanotify.h
    +++ b/include/linux/fanotify.h
    @@ -86,10 +86,11 @@
    #define FANOTIFY_METADATA_VERSION 2

    struct fanotify_event_metadata {
    - __u32 event_len;
    - __u32 vers;
    - __aligned_u64 mask;
    + __u16 event_len;
    + __u8 vers;
    + __u8 reserved;
    __s32 fd;
    + __aligned_u64 mask;
    __s32 pid;
    };



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