• Mingming Cao's avatar
    [PATCH] percpu counter data type changes to suppport more than 2**31 ext3 free blocks counter · 0216bfcf
    Mingming Cao authored
    The percpu counter data type are changed in this set of patches to support
    more users like ext3 who need more than 32 bit to store the free blocks
    total in the filesystem.
    - Generic perpcu counters data type changes.  The size of the global counter
      and local counter were explictly specified using s64 and s32.  The global
      counter is changed from long to s64, while the local counter is changed from
      long to s32, so we could avoid doing 64 bit update in most cases.
    - Users of the percpu counters are updated to make use of the new
      percpu_counter_init() routine now taking an additional parameter to allow
      users to pass the initial value of the global counter.
    Signed-off-by: default avatarMingming Cao <cmm@us.ibm.com>
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
percpu_counter.c 964 Bytes