Messages in this thread Patch in this message | | | Date | Mon, 27 Aug 2018 11:23:00 -0700 | Subject | [PATCH 05/20] platform: goldfish: pipe: Update the comment for GFP_ATOMIC | From | rkir@google ... |
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From: Roman Kiryanov <rkir@google.com>
Provide an explanation why GFP_ATOMIC is needed to prevent changing it to other values.
Signed-off-by: Roman Kiryanov <rkir@google.com> --- drivers/platform/goldfish/goldfish_pipe.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c index caf514aafb21..0c55e657da5a 100644 --- a/drivers/platform/goldfish/goldfish_pipe.c +++ b/drivers/platform/goldfish/goldfish_pipe.c @@ -640,7 +640,10 @@ static int get_free_pipe_id_locked(struct goldfish_pipe_dev *dev) return id; { - /* Reallocate the array */ + /* Reallocate the array. + * Since get_free_pipe_id_locked runs with interrupts disabled, + * we don't want to make calls that could lead to sleep. + */ u32 new_capacity = 2 * dev->pipes_capacity; struct goldfish_pipe **pipes = kcalloc(new_capacity, sizeof(*pipes), GFP_ATOMIC); -- 2.19.0.rc0.228.g281dcd1b4d0-goog
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