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authorWanpeng Li <liwp@linux.vnet.ibm.com>2012-08-01 03:41:52 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-08-01 05:42:40 +0400
commit3965c9ae47d64aadf6f13b6fcd37767b83c0689a (patch)
tree9896fbd841edbaa8e374b593ad0f7b96191cda5d /drivers
parentdeaf386ee58d5336bbef8959bf304573afb67c20 (diff)
downloadlinux-3965c9ae47d64aadf6f13b6fcd37767b83c0689a.tar.xz
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>
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