This commit was manufactured by cvs2svn to create tag

[linux-2.6.git] / Documentation / filesystems / proc.txt

diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index bc55201..faf3b7a 100644 (file)
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -201,7 +201,7 @@ Table 1-3: Kernel info in /proc
  devices     Available devices (block and character)           
  dma         Used DMS channels                                 
  filesystems Supported filesystems                             
- driver             Various drivers grouped here, currently rtc        (2.4)
+ driver             Various drivers grouped here, currently rtc (2.4)
  execdomains Execdomains, related to security                  (2.4)
  fb         Frame Buffer devices                               (2.4)
  fs         File system parameters, currently nfs/exports      (2.4)
@@ -1115,6 +1115,18 @@ program to load modules on demand.
 The files  in  this directory can be used to tune the operation of the virtual
 memory (VM)  subsystem  of  the  Linux  kernel.
 
+vfs_cache_pressure
+------------------
+
+Controls the tendency of the kernel to reclaim the memory which is used for
+caching of directory and inode objects.
+
+At the default value of vfs_cache_pressure=100 the kernel will attempt to
+reclaim dentries and inodes at a "fair" rate with respect to pagecache and
+swapcache reclaim.  Decreasing vfs_cache_pressure causes the kernel to prefer
+to retain dentry and inode caches.  Increasing vfs_cache_pressure beyond 100
+causes the kernel to prefer to reclaim dentries and inodes.
+
 dirty_background_ratio
 ----------------------
 
@@ -1212,14 +1224,6 @@ On the  other  hand,  enabling this feature can cause you to run out of memory
 and thrash the system to death, so large and/or important servers will want to
 set this value to 0.
 
-nr_hugepages and hugetlb_shm_group
-----------------------------------
-
-nr_hugepages configures number of hugetlb page reserved for the system.
-
-hugetlb_shm_group contains group id that is allowed to create SysV shared
-memory segment using hugetlb page.
-
 2.5 /proc/sys/dev - Device specific parameters
 ----------------------------------------------
 
@@ -1640,7 +1644,8 @@ flush
 
 Writing to this file results in a flush of the routing cache.
 
-gc_elastic, gc_interval, gc_min_interval, gc_tresh, gc_timeout
+gc_elasticity, gc_interval, gc_min_interval, gc_tresh, gc_timeout,
+gc_thresh, gc_thresh1, gc_thresh2, gc_thresh3
 --------------------------------------------------------------
 
 Values to  control  the  frequency  and  behavior  of  the  garbage collection
@@ -1860,3 +1865,10 @@ need to  recompile  the kernel, or even to reboot the system. The files in the
 command to write value into these files, thereby changing the default settings
 of the kernel.
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