From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@fb.com>
Cc: David Howells <dhowells@redhat.com>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linux-mtd@lists.infradead.org
Subject: [PATCH 5/8] block_dev: get bdev inode bdi directly from the block device
Date: Tue, 30 Dec 2014 09:57:36 +0100 [thread overview]
Message-ID: <1419929859-24427-6-git-send-email-hch@lst.de> (raw)
In-Reply-To: <1419929859-24427-1-git-send-email-hch@lst.de>
Directly grab the backing_dev_info from the request_queue instead of
detouring through the address_space.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/fs-writeback.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 2d609a5..e8116a4 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -69,10 +69,10 @@ EXPORT_SYMBOL(writeback_in_progress);
static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
-
+#ifdef CONFIG_BLOCK
if (sb_is_blkdev_sb(sb))
- return inode->i_mapping->backing_dev_info;
-
+ return blk_get_backing_dev_info(I_BDEV(inode));
+#endif
return sb->s_bdi;
}
--
1.9.1
--
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next prev parent reply other threads:[~2014-12-30 8:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-30 8:57 backing_dev_info cleanups Christoph Hellwig
2014-12-30 8:57 ` [PATCH 1/8] fs: deduplicate noop_backing_dev_info Christoph Hellwig
2014-12-30 8:57 ` [PATCH 2/8] fs: kill BDI_CAP_SWAP_BACKED Christoph Hellwig
2014-12-30 8:57 ` [PATCH 3/8] fs: introduce f_op->mmap_capabilities for nommu mmap support Christoph Hellwig
2014-12-30 8:57 ` [PATCH 4/8] block_dev: only write bdev inode on close Christoph Hellwig
2014-12-30 8:57 ` Christoph Hellwig [this message]
2014-12-30 8:57 ` [PATCH 6/8] nilfs2: set up s_bdi like the generic mount_bdev code Christoph Hellwig
2015-01-04 8:18 ` Ryusuke Konishi
2014-12-30 8:57 ` [PATCH 7/8] fs: export inode_to_bdi and use it in favor of mapping->backing_dev_info Christoph Hellwig
2014-12-30 8:57 ` [PATCH 8/8] fs: remove mapping->backing_dev_info Christoph Hellwig
2015-01-04 8:28 ` Ryusuke Konishi
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