linux-ext4 - [PATCH v2 8/8] buffer: Remove __getblk

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Date:   Thu, 14 Sep 2023 16:00:11 +0100
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     akpm@...ux-foundation.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Hui Zhu <teawater@...group.com>, linux-fsdevel@...r.kernel.org,
        linux-ext4@...r.kernel.org
Subject: [PATCH v2 8/8] buffer: Remove __getblk_gfp()

Inline it into __bread_gfp().

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 fs/buffer.c                 | 36 +++++++++++-------------------------
 include/linux/buffer_head.h |  2 --
 2 files changed, 11 insertions(+), 27 deletions(-)

diff --git a/fs/buffer.c b/fs/buffer.c
index 58546bfd8903..ad2526dd7cb4 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1420,9 +1420,6 @@ EXPORT_SYMBOL(__find_get_block);
  * @size: The size of buffer_heads for this @bdev.
  * @gfp: The memory allocation flags to use.
  *
- * In contrast to __getblk_gfp(), the @gfp flags must be all of the flags;
- * they are not augmented with the mapping's GFP flags.
- *
  * Return: The buffer head, or NULL if memory could not be allocated.
  */
 struct buffer_head *bdev_getblk(struct block_device *bdev, sector_t block,
@@ -1438,27 +1435,6 @@ struct buffer_head *bdev_getblk(struct block_device *bdev, sector_t block,
 }
 EXPORT_SYMBOL(bdev_getblk);
 
-/*
- * __getblk_gfp() will locate (and, if necessary, create) the buffer_head
- * which corresponds to the passed block_device, block and size. The
- * returned buffer has its reference count incremented.
- */
-struct buffer_head *
-__getblk_gfp(struct block_device *bdev, sector_t block,
-	     unsigned size, gfp_t gfp)
-{
-	gfp |= mapping_gfp_constraint(bdev->bd_inode->i_mapping, ~__GFP_FS);
-
-	/*
-	 * Prefer looping in the allocator rather than here, at least that
-	 * code knows what it's doing.
-	 */
-	gfp |= __GFP_NOFAIL;
-
-	return bdev_getblk(bdev, block, size, gfp);
-}
-EXPORT_SYMBOL(__getblk_gfp);
-
 /*
  * Do async read-ahead on a buffer..
  */
@@ -1490,7 +1466,17 @@ struct buffer_head *
 __bread_gfp(struct block_device *bdev, sector_t block,
 		   unsigned size, gfp_t gfp)
 {
-	struct buffer_head *bh = __getblk_gfp(bdev, block, size, gfp);
+	struct buffer_head *bh;
+
+	gfp |= mapping_gfp_constraint(bdev->bd_inode->i_mapping, ~__GFP_FS);
+
+	/*
+	 * Prefer looping in the allocator rather than here, at least that
+	 * code knows what it's doing.
+	 */
+	gfp |= __GFP_NOFAIL;
+
+	bh = bdev_getblk(bdev, block, size, gfp);
 
 	if (likely(bh) && !buffer_uptodate(bh))
 		bh = __bread_slow(bh);
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 5372deef732e..5f9208c3fa73 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -226,8 +226,6 @@ struct buffer_head *__find_get_block(struct block_device *bdev, sector_t block,
 			unsigned size);
 struct buffer_head *bdev_getblk(struct block_device *bdev, sector_t block,
 		unsigned size, gfp_t gfp);
-struct buffer_head *__getblk_gfp(struct block_device *bdev, sector_t block,
-				  unsigned size, gfp_t gfp);
 void __brelse(struct buffer_head *);
 void __bforget(struct buffer_head *);
 void __breadahead(struct block_device *, sector_t block, unsigned int size);
-- 
2.40.1