diff options
Diffstat (limited to 'mm/backing-dev.c')
| -rw-r--r-- | mm/backing-dev.c | 16 |
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) |