diff options
| author | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2012-07-25 18:12:01 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-08-04 12:15:09 +0400 |
| commit | 6601fac822778aa6003aed37d8ba7acdc9a4f369 (patch) | |
| tree | b662a04bb0768810448fbec04ffecf802df58449 /Documentation/sysctl | |
| parent | 34e5053fbe88800f5c2c6cbc849abb5a9f390974 (diff) | |
Documentation: fix the VM knobs descritpion WRT pdflush
The pdflush thread is long gone, however we still mention it incorrectly in the
kernel documentation. This patch fixes the situation.
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'Documentation/sysctl')
| -rw-r--r-- | Documentation/sysctl/vm.txt | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt index dcc2a94ae34..078701fdbd4 100644 --- a/Documentation/sysctl/vm.txt +++ b/Documentation/sysctl/vm.txt @@ -76,8 +76,8 @@ huge pages although processes will also directly compact memory as required. dirty_background_bytes -Contains the amount of dirty memory at which the pdflush background writeback -daemon will start writeback. +Contains the amount of dirty memory at which the background kernel +flusher threads will start writeback. Note: dirty_background_bytes is the counterpart of dirty_background_ratio. Only one of them may be specified at a time. When one sysctl is written it is @@ -89,7 +89,7 @@ other appears as 0 when read. dirty_background_ratio Contains, as a percentage of total system memory, the number of pages at which -the pdflush background writeback daemon will start writing out dirty data. +the background kernel flusher threads will start writing out dirty data. ============================================================== @@ -112,9 +112,9 @@ retained. dirty_expire_centisecs This tunable is used to define when dirty data is old enough to be eligible -for writeout by the pdflush daemons. It is expressed in 100'ths of a second. -Data which has been dirty in-memory for longer than this interval will be -written out next time a pdflush daemon wakes up. +for writeout by the kernel flusher threads. It is expressed in 100'ths +of a second. Data which has been dirty in-memory for longer than this +interval will be written out next time a flusher thread wakes up. ============================================================== @@ -128,7 +128,7 @@ data. dirty_writeback_centisecs -The pdflush writeback daemons will periodically wake up and write `old' data +The kernel flusher threads will periodically wake up and write `old' data out to disk. This tunable expresses the interval between those wakeups, in 100'ths of a second. |