Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
dm vdo: Update code to use mem_is_zero
Remove function that would check if data was all zeroes. Use the
built-in kernel function mem_is_zero() instead.
Signed-off-by: Bruce Johnston <bjohnsto@redhat.com>
Signed-off-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
authored by
Bruce Johnston
and committed by
Mikulas Patocka
e828a187
2b1c6d7a
+3
-14
+3
-14
drivers/md/dm-vdo/data-vio.c
+3
-14
drivers/md/dm-vdo/data-vio.c
···
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#include <linux/minmax.h>
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#include <linux/sched.h>
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#include <linux/spinlock.h>
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+
#include <linux/string.h>
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#include <linux/wait.h>
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#include "logger.h"
···
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vdo_enqueue_completion(completion, VDO_DEFAULT_Q_MAP_BIO_PRIORITY);
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}
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-
static bool is_zero_block(char *block)
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{
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int i;
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for (i = 0; i < VDO_BLOCK_SIZE; i += sizeof(u64)) {
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if (*((u64 *) &block[i]))
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return false;
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}
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return true;
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}
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-
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static void copy_from_bio(struct bio *bio, char *data_ptr)
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{
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struct bio_vec biovec;
···
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* we acknowledge the bio.
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*/
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copy_from_bio(bio, data_vio->vio.data);
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-
data_vio->is_zero = is_zero_block(data_vio->vio.data);
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+
data_vio->is_zero = mem_is_zero(data_vio->vio.data, VDO_BLOCK_SIZE);
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data_vio->write = true;
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}
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···
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copy_from_bio(bio, data + data_vio->offset);
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}
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-
data_vio->is_zero = is_zero_block(data);
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data_vio->is_zero = mem_is_zero(data, VDO_BLOCK_SIZE);
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data_vio->read = false;
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launch_data_vio_logical_callback(data_vio,
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continue_data_vio_with_block_map_slot);