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-rw-r--r--Documentation/sysctl/vm.txt23
1 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt
index 697ef8c225df..e72853b6d725 100644
--- a/Documentation/sysctl/vm.txt
+++ b/Documentation/sysctl/vm.txt
@@ -27,6 +27,7 @@ Currently, these files are in /proc/sys/vm:
- dirty_bytes
- dirty_expire_centisecs
- dirty_ratio
+- dirtytime_expire_seconds
- dirty_writeback_centisecs
- drop_caches
- extfrag_threshold
@@ -44,6 +45,7 @@ Currently, these files are in /proc/sys/vm:
- mmap_rnd_bits
- mmap_rnd_compat_bits
- nr_hugepages
+- nr_hugepages_mempolicy
- nr_overcommit_hugepages
- nr_trim_pages (only if CONFIG_MMU=n)
- numa_zonelist_order
@@ -178,6 +180,18 @@ The total available memory is not equal to total system memory.
==============================================================
+dirtytime_expire_seconds
+
+When a lazytime inode is constantly having its pages dirtied, the inode with
+an updated timestamp will never get chance to be written out. And, if the
+only thing that has happened on the file system is a dirtytime inode caused
+by an atime update, a worker will be scheduled to make sure that inode
+eventually gets pushed out to disk. This tunable is used to define when dirty
+inode is old enough to be eligible for writeback by the kernel flusher threads.
+And, it is also used as the interval to wakeup dirtytime_writeback thread.
+
+==============================================================
+
dirty_writeback_centisecs
The kernel flusher threads will periodically wake up and write `old' data
@@ -519,6 +533,15 @@ See Documentation/admin-guide/mm/hugetlbpage.rst
==============================================================
+nr_hugepages_mempolicy
+
+Change the size of the hugepage pool at run-time on a specific
+set of NUMA nodes.
+
+See Documentation/admin-guide/mm/hugetlbpage.rst
+
+==============================================================
+
nr_overcommit_hugepages
Change the maximum size of the hugepage pool. The maximum is