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block: Catch possible entries missing from alloc_policy_name[]

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Make BLK_TAG_ALLOC_x an enum and add a "max" entry.

Add a BUILD_BUG_ON() call to ensure that we are not missing entries in
hctx_flag_name[].

Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240719112912.3830443-12-john.g.garry@oracle.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
John Garry
2024-07-19 11:29:08 +00:00
committed by Jens Axboe
parent 226f0f6afc
commit 26d3bdb57e
2 changed files with 7 additions and 2 deletions
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block/blk-mq-debugfs.c
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@@ -198,6 +198,7 @@ static int hctx_flags_show(void *data, struct seq_file *m)
BUILD_BUG_ON(ARRAY_SIZE(hctx_flag_name) !=
BLK_MQ_F_ALLOC_POLICY_START_BIT);
BUILD_BUG_ON(ARRAY_SIZE(alloc_policy_name) != BLK_TAG_ALLOC_MAX);
seq_puts(m, "alloc_policy=");
if (alloc_policy < ARRAY_SIZE(alloc_policy_name) &&