+ dwmw2 On Wed, Jan 14, 2015 at 10:42:32AM +0100, Christoph Hellwig wrote: > Since "BDI: Provide backing device capability information [try #3]" the > backing_dev_info structure also provides flags for the kind of mmap > operation available in a nommu environment, which is entirely unrelated > to it's original purpose. > > Introduce a new nommu-only file operation to provide this information to > the nommu mmap code instead. Splitting this from the backing_dev_info > structure allows to remove lots of backing_dev_info instance that aren't > otherwise needed, and entirely gets rid of the concept of providing a > backing_dev_info for a character device. It also removes the need for > the mtd_inodefs filesystem. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > Reviewed-by: Tejun Heo <tj@xxxxxxxxxx> > --- > Documentation/nommu-mmap.txt | 8 +-- > block/blk-core.c | 2 +- > drivers/char/mem.c | 64 ++++++++++---------- > drivers/mtd/mtdchar.c | 72 ++++------------------ > drivers/mtd/mtdconcat.c | 10 ---- > drivers/mtd/mtdcore.c | 80 +++++++------------------ > drivers/mtd/mtdpart.c | 1 - There's a small conflict in mtdcore.c with some stuff I have queued up for MTD in linux-next. Should be trivial to resolve later. I don't have a test platform for nommu, and I'll admit I'm not too familiar with this code, but it looks OK to me. So FWIW, for the MTD parts: Acked-by: Brian Norris <computersforpeace@xxxxxxxxx> > drivers/staging/lustre/lustre/llite/llite_lib.c | 2 +- > fs/9p/v9fs.c | 2 +- > fs/afs/volume.c | 2 +- > fs/aio.c | 14 +---- > fs/btrfs/disk-io.c | 3 +- > fs/char_dev.c | 24 -------- > fs/cifs/connect.c | 2 +- > fs/coda/inode.c | 2 +- > fs/configfs/configfs_internal.h | 2 - > fs/configfs/inode.c | 18 +----- > fs/configfs/mount.c | 11 +--- > fs/ecryptfs/main.c | 2 +- > fs/exofs/super.c | 2 +- > fs/ncpfs/inode.c | 2 +- > fs/ramfs/file-nommu.c | 7 +++ > fs/ramfs/inode.c | 22 +------ > fs/romfs/mmap-nommu.c | 10 ++++ > fs/ubifs/super.c | 2 +- > include/linux/backing-dev.h | 33 ++-------- > include/linux/cdev.h | 2 - > include/linux/fs.h | 23 +++++++ > include/linux/mtd/mtd.h | 2 + > mm/backing-dev.c | 7 +-- > mm/nommu.c | 69 ++++++++++----------- > security/security.c | 13 ++-- > 32 files changed, 169 insertions(+), 346 deletions(-) [...] Brian -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
