linux-kernel - [PATCH 1/7] block: Add some exports for bcachefs

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Message-Id: <20230525214822.2725616-2-kent.overstreet@linux.dev>
Date:   Thu, 25 May 2023 17:48:16 -0400
From:   Kent Overstreet <kent.overstreet@...ux.dev>
To:     linux-kernel@...r.kernel.org, axboe@...nel.dk
Cc:     Kent Overstreet <kent.overstreet@...il.com>,
        linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Kent Overstreet <kent.overstreet@...ux.dev>
Subject: [PATCH 1/7] block: Add some exports for bcachefs

From: Kent Overstreet <kent.overstreet@...il.com>

 - bio_set_pages_dirty(), bio_check_pages_dirty() - dio path
 - blk_status_to_str() - error messages
 - bio_add_folio() - this should definitely be exported for everyone,
   it's the modern version of bio_add_page()

Signed-off-by: Kent Overstreet <kent.overstreet@...il.com>
Cc: linux-block@...r.kernel.org
Cc: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Kent Overstreet <kent.overstreet@...ux.dev>
---
 block/bio.c            | 3 +++
 block/blk-core.c       | 1 +
 block/blk.h            | 1 -
 include/linux/blkdev.h | 1 +
 4 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/block/bio.c b/block/bio.c
index fd11614bba..1e75840d17 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1159,6 +1159,7 @@ bool bio_add_folio(struct bio *bio, struct folio *folio, size_t len,
 		return false;
 	return bio_add_page(bio, &folio->page, len, off) > 0;
 }
+EXPORT_SYMBOL(bio_add_folio);
 
 void __bio_release_pages(struct bio *bio, bool mark_dirty)
 {
@@ -1480,6 +1481,7 @@ void bio_set_pages_dirty(struct bio *bio)
 			set_page_dirty_lock(bvec->bv_page);
 	}
 }
+EXPORT_SYMBOL_GPL(bio_set_pages_dirty);
 
 /*
  * bio_check_pages_dirty() will check that all the BIO's pages are still dirty.
@@ -1539,6 +1541,7 @@ void bio_check_pages_dirty(struct bio *bio)
 	spin_unlock_irqrestore(&bio_dirty_lock, flags);
 	schedule_work(&bio_dirty_work);
 }
+EXPORT_SYMBOL_GPL(bio_check_pages_dirty);
 
 static inline bool bio_remaining_done(struct bio *bio)
 {
diff --git a/block/blk-core.c b/block/blk-core.c
index 42926e6cb8..f19bcc684b 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -205,6 +205,7 @@ const char *blk_status_to_str(blk_status_t status)
 		return "<null>";
 	return blk_errors[idx].name;
 }
+EXPORT_SYMBOL_GPL(blk_status_to_str);
 
 /**
  * blk_sync_queue - cancel any pending callbacks on a queue
diff --git a/block/blk.h b/block/blk.h
index cc4e8873df..cc04dc73e9 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -259,7 +259,6 @@ static inline void blk_integrity_del(struct gendisk *disk)
 
 unsigned long blk_rq_timeout(unsigned long timeout);
 void blk_add_timer(struct request *req);
-const char *blk_status_to_str(blk_status_t status);
 
 bool blk_attempt_plug_merge(struct request_queue *q, struct bio *bio,
 		unsigned int nr_segs);
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 941304f174..7cac183112 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -867,6 +867,7 @@ extern const char *blk_op_str(enum req_op op);
 
 int blk_status_to_errno(blk_status_t status);
 blk_status_t errno_to_blk_status(int errno);
+const char *blk_status_to_str(blk_status_t status);
 
 /* only poll the hardware once, don't continue until a completion was found */
 #define BLK_POLL_ONESHOT		(1 << 0)
-- 
2.40.1