lustre/kernel_patches/patches/vfs-dcache_lustre_invalid-vanilla-2.6.patch

   1 %diffstat
   2  fs/dcache.c            |    7 +++++++
   3  include/linux/dcache.h |    1 +
   4  2 files changed, 8 insertions(+)
   5
   6 %patch
   7 Index: linux-2.6.6/fs/dcache.c
   8 ===================================================================
   9 --- linux-2.6.6.orig/fs/dcache.c        2004-05-22 02:11:17.000000000 +0800
  10 +++ linux-2.6.6/fs/dcache.c     2004-05-22 02:14:46.000000000 +0800
  11 @@ -217,6 +217,13 @@ int d_invalidate(struct dentry * dentry)
  12                 spin_unlock(&dcache_lock);
  13                 return 0;
  14         }
  15 +
  16 +       /* network invalidation by Lustre */
  17 +       if (dentry->d_flags & DCACHE_LUSTRE_INVALID) {
  18 +               spin_unlock(&dcache_lock);
  19 +               return 0;
  20 +       }
  21 +
  22         /*
  23          * Check whether to do a partial shrink_dcache
  24          * to get rid of unused child entries.
  25 Index: linux-2.6.6/include/linux/dcache.h
  26 ===================================================================
  27 --- linux-2.6.6.orig/include/linux/dcache.h     2004-05-22 02:10:01.000000000 +0800
  28 +++ linux-2.6.6/include/linux/dcache.h  2004-05-22 02:15:17.000000000 +0800
  29 @@ -153,6 +153,7 @@ d_iput:             no              no              yes
  30
  31  #define DCACHE_REFERENCED      0x0008  /* Recently used, don't discard. */
  32  #define DCACHE_UNHASHED                0x0010
  33 +#define DCACHE_LUSTRE_INVALID  0x0020  /* invalidated by Lustre */
  34
  35  extern spinlock_t dcache_lock;
  36
  37