| Message ID | 20240625145955.115252-3-hch@lst.de |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [1/8] md: set md-specific flags for all queue limits | expand |
On 25/06/2024 15:59, Christoph Hellwig wrote: > Check the features flag and the override flag, otherwise we're going to > always report "write through". > > Fixes: 1122c0c1cc71 ("block: move cache control settings out of queue->flags") > Signed-off-by: Christoph Hellwig <hch@lst.de> > --- > block/blk-sysfs.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c > index 1a984179f3acc5..6db65886e7ed5a 100644 > --- a/block/blk-sysfs.c > +++ b/block/blk-sysfs.c > @@ -453,7 +453,8 @@ static ssize_t queue_io_timeout_store(struct request_queue *q, const char *page, > > static ssize_t queue_wc_show(struct request_queue *q, char *page) > { > - if (q->limits.features & BLK_FLAG_WRITE_CACHE_DISABLED) > + if (!(q->limits.features & BLK_FEAT_WRITE_CACHE) || > + (q->limits.flags & BLK_FLAG_WRITE_CACHE_DISABLED)) Could you use blk_queue_write_cache() helper here to reduce duplication? > return sprintf(page, "write through\n"); > return sprintf(page, "write back\n"); > }
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 1a984179f3acc5..6db65886e7ed5a 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -453,7 +453,8 @@ static ssize_t queue_io_timeout_store(struct request_queue *q, const char *page, static ssize_t queue_wc_show(struct request_queue *q, char *page) { - if (q->limits.features & BLK_FLAG_WRITE_CACHE_DISABLED) + if (!(q->limits.features & BLK_FEAT_WRITE_CACHE) || + (q->limits.flags & BLK_FLAG_WRITE_CACHE_DISABLED)) return sprintf(page, "write through\n"); return sprintf(page, "write back\n"); }
Check the features flag and the override flag, otherwise we're going to always report "write through". Fixes: 1122c0c1cc71 ("block: move cache control settings out of queue->flags") Signed-off-by: Christoph Hellwig <hch@lst.de> --- block/blk-sysfs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)