3.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: John Stultz <john.stultz@xxxxxxxxxx>
commit 5957324045ba2c127c9401fa3ac61ac52e043ca8 upstream.
Hopefully this isn't too late for 3.12.
In commit 7dc19d5aff (convert shrinkers to new count/scan API)
the return value to PURGE_ALL_CACHES was dropped, causing -EPERM
to always be returned.
This patch re-adds the ret assignment, setting it to the the
ashmem_shrink_count(), which is the lru_count.
(Sorry this was missed in the review!)
Fixes: 7dc19d5affd7 ("convert shrinkers to new count/scan API")
Cc: Colin Cross <ccross@xxxxxxxxxxx>
Cc: Android Kernel Team <kernel-team@xxxxxxxxxxx>
Cc: Glauber Costa <glommer@xxxxxxxxxx>
Reported-by: YongQin Liu <yongqin.liu@xxxxxxxxxx>
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
Acked-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/android/ashmem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/android/ashmem.c
+++ b/drivers/staging/android/ashmem.c
@@ -706,7 +706,7 @@ static long ashmem_ioctl(struct file *fi
.gfp_mask = GFP_KERNEL,
.nr_to_scan = LONG_MAX,
};
-
+ ret = ashmem_shrink_count(&ashmem_shrinker, &sc);
nodes_setall(sc.nodes_to_scan);
ashmem_shrink_scan(&ashmem_shrinker, &sc);
}
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