| From | Greg Kroah-Hartman <> | Subject | [ 45/86] drm/udl: disable fb_defio by default | Date | Tue, 26 Feb 2013 16:07:53 -0800 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: Dave Airlie <airlied@redhat.com>
commit 677d23b70bf949f75746c80cbae92c233c6b5e2a upstream.
There seems to be a bad interaction between gem/shmem and defio on top, I get list corruption on the page lru in the shmem code.
Turn it off for now until we get some more digging done.
Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/gpu/drm/udl/udl_fb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/udl/udl_fb.c +++ b/drivers/gpu/drm/udl/udl_fb.c @@ -22,9 +22,9 @@ #include "drm_fb_helper.h" -#define DL_DEFIO_WRITE_DELAY 5 /* fb_deferred_io.delay in jiffies */ +#define DL_DEFIO_WRITE_DELAY (HZ/20) /* fb_deferred_io.delay in jiffies */ -static int fb_defio = 1; /* Optionally enable experimental fb_defio mmap support */ +static int fb_defio = 0; /* Optionally enable experimental fb_defio mmap support */ static int fb_bpp = 16; module_param(fb_bpp, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP);
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