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authorChristoph Hellwig <hch@lst.de>2021-09-20 15:33:14 +0300
committerJens Axboe <axboe@kernel.dk>2021-10-18 15:17:01 +0300
commitccdf774189b6466457ca9c7de1fe9ed18547d249 (patch)
treea57ef7145a7cc6f92358b3a13451fe8a0edfa8fb /mm/backing-dev.c
parente41d12f539f7c8bac9b0897031fee6cc9158a6be (diff)
downloadlinux-ccdf774189b6466457ca9c7de1fe9ed18547d249.tar.xz
mm: don't include <linux/blkdev.h> in <linux/backing-dev.h>
Move inode_to_bdi out of line to avoid having to include blkdev.h. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20210920123328.1399408-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'mm/backing-dev.c')
-rw-r--r--mm/backing-dev.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 5245744437dc..c878d995af06 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -978,6 +978,22 @@ void bdi_put(struct backing_dev_info *bdi)
}
EXPORT_SYMBOL(bdi_put);
+struct backing_dev_info *inode_to_bdi(struct inode *inode)
+{
+ struct super_block *sb;
+
+ if (!inode)
+ return &noop_backing_dev_info;
+
+ sb = inode->i_sb;
+#ifdef CONFIG_BLOCK
+ if (sb_is_blkdev_sb(sb))
+ return I_BDEV(inode)->bd_disk->bdi;
+#endif
+ return sb->s_bdi;
+}
+EXPORT_SYMBOL(inode_to_bdi);
+
const char *bdi_dev_name(struct backing_dev_info *bdi)
{
if (!bdi || !bdi->dev)