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platform: goldfish: pipe: Update the comment for GFP_ATOMIC

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Provide an explanation why GFP_ATOMIC is needed to prevent changing it to
other values.

Signed-off-by: Roman Kiryanov <rkir@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Roman Kiryanov 2018-08-27 11:23:00 -07:00 • committed by Greg Kroah-Hartman
commit 84ae527aa5
1 changed files with 4 additions and 1 deletions
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5
drivers/platform/goldfish/goldfish_pipe.c
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@ -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);