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    Subject[patch 8/8] inode-diet: Fix size of i_blkbits, i_version, and i_dnotify_mask
    i_blkbits stores the log n of the blocksize; there is no reason for it
    to take more than 16 bits, so change it to be a short and put it next
    to i_mode.

    i_version and i_dnotify_mask need to be 32 bits, but there is no
    reason for them to be 64-bit values on 64-bit architectures, so make
    them be unsigned int's instead of unsigned long's.

    Signed-off-by: "Theodore Ts'o" <>

    Index: linux-2.6.17-mm5/include/linux/fs.h
    --- linux-2.6.17-mm5.orig/include/linux/fs.h 2006-07-02 20:29:52.000000000 -0400
    +++ linux-2.6.17-mm5/include/linux/fs.h 2006-07-02 20:29:55.000000000 -0400
    @@ -498,6 +498,7 @@
    unsigned long i_ino;
    atomic_t i_count;
    umode_t i_mode;
    + unsigned short i_blkbits;
    unsigned int i_nlink;
    uid_t i_uid;
    gid_t i_gid;
    @@ -505,8 +506,7 @@
    struct timespec i_atime;
    struct timespec i_mtime;
    struct timespec i_ctime;
    - unsigned int i_blkbits;
    - unsigned long i_version;
    + unsigned int i_version;
    spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */
    struct mutex i_mutex;
    struct rw_semaphore i_alloc_sem;
    @@ -538,7 +538,7 @@
    __u32 i_generation;

    - unsigned long i_dnotify_mask; /* Directory notify events */
    + unsigned int i_dnotify_mask; /* Directory notify events */
    struct dnotify_struct *i_dnotify; /* for directory notifications */

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      Last update: 2006-07-03 03:05    [W:0.019 / U:108.532 seconds]
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