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3965c9ae4 mm: prepare for removal of obsolete /proc/sys/vm/nr_pdflush_threads ... Browse Code »

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
Cc: Wu Fengguang
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds

Wanpeng Li
2012-08-01 09:42:40 +0800

proc-sys-vm-nr_pdflush_threads 248 Bytes

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What:		/proc/sys/vm/nr_pdflush_threads
Date:		June 2012
Contact:	Wanpeng Li <liwp@linux.vnet.ibm.com>
Description: Since pdflush is replaced by per-BDI flusher, the interface of old pdflush
             exported in /proc/sys/vm/ should be removed.