Branch HEAD

[fs/lustre-release.git] / lustre / kernel_patches / patches / vm-tunables-rhel4.patch

diff --git a/lustre/kernel_patches/patches/vm-tunables-rhel4.patch b/lustre/kernel_patches/patches/vm-tunables-rhel4.patch
index 7e4a9d6..db2460b 100644 (file)
--- a/lustre/kernel_patches/patches/vm-tunables-rhel4.patch
+++ b/lustre/kernel_patches/patches/vm-tunables-rhel4.patch
@@ -17,57 +17,3 @@ Index: linux+rhel4+chaos/mm/page_alloc.c
                spin_unlock_irqrestore(&zone->lru_lock, flags);
        }
  }
-@@ -1982,24 +1986,25 @@ static void setup_per_zone_pages_min(voi
-  * Initialise min_free_kbytes.
-  *
-  * For small machines we want it small (128k min).  For large machines
-- * we want it large (16MB max).  But it is not linear, because network
-+ * we want it large (64MB max).  But it is not linear, because network
-  * bandwidth does not increase linearly with machine size.  We use
-  *
-- *    min_free_kbytes = sqrt(lowmem_kbytes)
-+ *    min_free_kbytes = 4 * sqrt(lowmem_kbytes), for better accuracy
-+ *  min_free_kbytes = sqrt(lowmem_kbytes * 16) 
-  *
-  * which yields
-  *
-- * 16MB:      128k
-- * 32MB:      181k
-- * 64MB:      256k
-- * 128MB:     362k
-- * 256MB:     512k
-- * 512MB:     724k
-- * 1024MB:    1024k
-- * 2048MB:    1448k
-- * 4096MB:    2048k
-- * 8192MB:    2896k
-- * 16384MB:   4096k
-+ * 16MB:      512k
-+ * 32MB:      724k
-+ * 64MB:      1024k
-+ * 128MB:     1448k
-+ * 256MB:     2048k
-+ * 512MB:     2896k
-+ * 1024MB:    4096k
-+ * 2048MB:    5792k
-+ * 4096MB:    8192k
-+ * 8192MB:    11584k
-+ * 16384MB:   16384k
-  */
- static int __init init_per_zone_pages_min(void)
- {
-@@ -2007,11 +2012,11 @@ static int __init init_per_zone_pages_mi
- 
-       lowmem_kbytes = nr_free_buffer_pages() * (PAGE_SIZE >> 10);
- 
--      min_free_kbytes = int_sqrt(lowmem_kbytes);
-+      min_free_kbytes = int_sqrt(lowmem_kbytes * 16);
-       if (min_free_kbytes < 128)
-               min_free_kbytes = 128;
--      if (min_free_kbytes > 16384)
--              min_free_kbytes = 16384;
-+      if (min_free_kbytes > 65536)
-+              min_free_kbytes = 65536;
-       setup_per_zone_pages_min();
-       setup_per_zone_protection();
-       return 0;