Messages in this thread | | | Date | Tue, 27 Jul 2010 13:27:31 -0400 | From | Christoph Hellwig <> | Subject | Re: [PATCH 1/3] bdi: Use parent filesystem BDI for inodes not capable of writeback |
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On Tue, Jul 27, 2010 at 07:24:38PM +0200, Jan Kara wrote: > Always returning inode->i_sb->s_bdi wouldn't be a right thing IMHO. > That would file inode for /dev/sda to BDI list of tmpfs mounted on /dev/ > which isn't what you want...
It shouldn't. Block device nodes are on the bdev filesystems, and we twist the file->mapping pointer so that all the low-level read/write code always deals with the bdev fs inode, and not the device node filesystem.
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