aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/ABI
diff options
context:
space:
mode:
authorWanpeng Li <liwp@linux.vnet.ibm.com>2012-07-31 19:41:52 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-31 21:42:40 -0400
commit3965c9ae47d64aadf6f13b6fcd37767b83c0689a (patch)
tree9896fbd841edbaa8e374b593ad0f7b96191cda5d /Documentation/ABI
parentdeaf386ee58d5336bbef8959bf304573afb67c20 (diff)
mm: prepare for removal of obsolete /proc/sys/vm/nr_pdflush_threads
Since per-BDI flusher threads were introduced in 2.6, the pdflush mechanism is not used any more. But the old interface exported through /proc/sys/vm/nr_pdflush_threads still exists and is obviously useless. For back-compatibility, printk warning information and return 2 to notify the users that the interface is removed. Signed-off-by: Wanpeng Li <liwp@linux.vnet.ibm.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/obsolete/proc-sys-vm-nr_pdflush_threads5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/ABI/obsolete/proc-sys-vm-nr_pdflush_threads b/Documentation/ABI/obsolete/proc-sys-vm-nr_pdflush_threads
new file mode 100644
index 000000000000..b0b0eeb20fe3
--- /dev/null
+++ b/Documentation/ABI/obsolete/proc-sys-vm-nr_pdflush_threads
@@ -0,0 +1,5 @@
1What: /proc/sys/vm/nr_pdflush_threads
2Date: June 2012
3Contact: Wanpeng Li <liwp@linux.vnet.ibm.com>
4Description: Since pdflush is replaced by per-BDI flusher, the interface of old pdflush
5 exported in /proc/sys/vm/ should be removed.