diff options
Diffstat (limited to 'config/spl-build.m4')
| -rw-r--r-- | config/spl-build.m4 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/config/spl-build.m4 b/config/spl-build.m4 index 72bb3258e..94c7f3e74 100644 --- a/config/spl-build.m4 +++ b/config/spl-build.m4 @@ -76,6 +76,8 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ SPL_AC_3ARGS_FILE_FSYNC SPL_AC_EXPORTED_RWSEM_IS_LOCKED SPL_AC_KERNEL_INVALIDATE_INODES + SPL_AC_SHRINK_DCACHE_MEMORY + SPL_AC_SHRINK_ICACHE_MEMORY ]) AC_DEFUN([SPL_AC_MODULE_SYMVERS], [ @@ -1717,3 +1719,33 @@ AC_DEFUN([SPL_AC_KERNEL_INVALIDATE_INODES], [ [invalidate_inodes() is available])], []) ]) + +dnl # +dnl # 2.6.xx API compat, +dnl # There currently exists no exposed API to partially shrink the dcache. +dnl # The expected mechanism to shrink the cache is a registered shrinker +dnl # which is called during memory pressure. +dnl # +AC_DEFUN([SPL_AC_SHRINK_DCACHE_MEMORY], [ + SPL_CHECK_SYMBOL_EXPORT( + [shrink_dcache_memory], + [fs/dcache.c], + [AC_DEFINE(HAVE_SHRINK_DCACHE_MEMORY, 1, + [shrink_dcache_memory() is available])], + []) +]) + +dnl # +dnl # 2.6.xx API compat, +dnl # There currently exists no exposed API to partially shrink the icache. +dnl # The expected mechanism to shrink the cache is a registered shrinker +dnl # which is called during memory pressure. +dnl # +AC_DEFUN([SPL_AC_SHRINK_ICACHE_MEMORY], [ + SPL_CHECK_SYMBOL_EXPORT( + [shrink_icache_memory], + [fs/inode.c], + [AC_DEFINE(HAVE_SHRINK_ICACHE_MEMORY, 1, + [shrink_icache_memory() is available])], + []) +]) |