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    Subject[PATCH 1/3] sysfs: Compact sysfs_dirent s_flags into a byte.

    In an effort to keep sysfs_dirent small used the smallest
    basic type I can for sysfs s_flags.

    Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
    ---
    fs/sysfs/sysfs.h | 10 +++++-----
    1 files changed, 5 insertions(+), 5 deletions(-)

    diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
    index 6289a00..c76c932 100644
    --- a/fs/sysfs/sysfs.h
    +++ b/fs/sysfs/sysfs.h
    @@ -76,7 +76,7 @@ struct sysfs_dirent {
    struct sysfs_elem_bin_attr s_bin_attr;
    };

    - unsigned short s_flags;
    + unsigned char s_flags;
    umode_t s_mode;
    unsigned int s_ino;
    struct sysfs_inode_attrs *s_iattr;
    @@ -84,7 +84,7 @@ struct sysfs_dirent {

    #define SD_DEACTIVATED_BIAS INT_MIN

    -#define SYSFS_TYPE_MASK 0x00ff
    +#define SYSFS_TYPE_MASK 0x000f
    #define SYSFS_DIR 0x0001
    #define SYSFS_KOBJ_ATTR 0x0002
    #define SYSFS_KOBJ_BIN_ATTR 0x0004
    @@ -93,11 +93,11 @@ struct sysfs_dirent {
    #define SYSFS_ACTIVE_REF (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR)

    /* identify any namespace tag on sysfs_dirents */
    -#define SYSFS_NS_TYPE_MASK 0xf00
    -#define SYSFS_NS_TYPE_SHIFT 8
    +#define SYSFS_NS_TYPE_MASK 0x70
    +#define SYSFS_NS_TYPE_SHIFT 4

    #define SYSFS_FLAG_MASK ~(SYSFS_NS_TYPE_MASK|SYSFS_TYPE_MASK)
    -#define SYSFS_FLAG_REMOVED 0x02000
    +#define SYSFS_FLAG_REMOVED 0x080

    static inline unsigned int sysfs_type(struct sysfs_dirent *sd)
    {
    --
    1.7.2.5


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