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bdi: replace BDI_CAP_NO_{WRITEBACK,ACCT_DIRTY} with a single flag

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Replace the two negative flags that are always used together with a
single positive flag that indicates the writeback capability instead
of two related non-capabilities.  Also remove the pointless wrappers
to just check the flag.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2020-09-24 08:51:40 +02:00
committed by Jens Axboe
parent 823423ef55
commit f56753ac2a
10 changed files with 29 additions and 58 deletions
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6
mm/backing-dev.c
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@@ -14,9 +14,7 @@
#include <linux/device.h>
#include <trace/events/writeback.h>
struct backing_dev_info noop_backing_dev_info = {
.capabilities = BDI_CAP_NO_ACCT_AND_WRITEBACK,
};
struct backing_dev_info noop_backing_dev_info;
EXPORT_SYMBOL_GPL(noop_backing_dev_info);
static struct class *bdi_class;
@@ -745,7 +743,7 @@ struct backing_dev_info *bdi_alloc(int node_id)
kfree(bdi);
return NULL;
}
bdi->capabilities = BDI_CAP_WRITEBACK_ACCT;
bdi->capabilities = BDI_CAP_WRITEBACK | BDI_CAP_WRITEBACK_ACCT;
bdi->ra_pages = VM_READAHEAD_PAGES;
bdi->io_pages = VM_READAHEAD_PAGES;
return bdi;