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block, bfq: constify sysfs attributes

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The elevator core now allows instances of 'struct elv_fs_entry' to be
moved into read-only memory. Make use of that to protect them against
accidental or malicious modifications.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20250102-sysfs-const-attr-elevator-v1-3-9837d2058c60@weissschuh.net
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Thomas Weißschuh 2025-01-02 13:01:33 +01:00 committed by Jens Axboe
parent 8686e1deda
commit c40f9f6ac5
1 changed files with 1 additions and 1 deletions
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block/bfq-iosched.c
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@ -7614,7 +7614,7 @@ static ssize_t bfq_low_latency_store(struct elevator_queue *e,
#define BFQ_ATTR(name) \
__ATTR(name, 0644, bfq_##name##_show, bfq_##name##_store)
static struct elv_fs_entry bfq_attrs[] = {
static const struct elv_fs_entry bfq_attrs[] = {
BFQ_ATTR(fifo_expire_sync),
BFQ_ATTR(fifo_expire_async),
BFQ_ATTR(back_seek_max),