Messages in this thread | | | Date | Sat, 18 Dec 2010 00:42:18 +0900 | Subject | Re: [PATCH] writeback: skip balance_dirty_pages() for in-memory fs | From | Minchan Kim <> |
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On Sat, Dec 18, 2010 at 12:34 AM, Minchan Kim <minchan.kim@gmail.com> wrote: > On Fri, Dec 17, 2010 at 8:21 PM, Wu Fengguang <fengguang.wu@intel.com> wrote: >> This avoids unnecessary checks and dirty throttling on tmpfs/ramfs. >> >> It also prevents >> >> [ 388.126563] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050 >> >> in the balance_dirty_pages tracepoint, which will call >> >> dev_name(mapping->backing_dev_info->dev) >> >> but shmem_backing_dev_info.dev is NULL. >> >> CC: Hugh Dickins <hughd@google.com> >> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> > Reviewed-by: Minchan Kim <minchan.kim@gmail.com> > > Is it a material for -stable?
No. balance_dirty_pages tracepoint is new. :)
> > -- > Kind regards, > Minchan Kim >
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