On Sat, Feb 6, 2016 at 11:19 PM, Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> wrote: > dax_clear_blocks() needs a valid struct block_device and previously it was > using inode->i_sb->s_bdev in all cases. This is correct for normal inodes > on mounted ext2, ext4 and XFS filesystems, but is incorrect for DAX raw > block devices and for XFS real-time devices. > > Instead, have the caller pass in a struct block_device pointer which it > knows to be correct. > > Signed-off-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> > --- > fs/dax.c | 4 ++-- > fs/ext2/inode.c | 5 +++-- > fs/xfs/xfs_aops.c | 2 +- > fs/xfs/xfs_aops.h | 1 + > fs/xfs/xfs_bmap_util.c | 4 +++- > include/linux/dax.h | 3 ++- > 6 files changed, 12 insertions(+), 7 deletions(-) > > diff --git a/fs/dax.c b/fs/dax.c > index 227974a..4592241 100644 > --- a/fs/dax.c > +++ b/fs/dax.c > @@ -83,9 +83,9 @@ struct page *read_dax_sector(struct block_device *bdev, sector_t n) > * and hence this means the stack from this point must follow GFP_NOFS > * semantics for all operations. > */ > -int dax_clear_blocks(struct inode *inode, sector_t block, long _size) > +int dax_clear_blocks(struct inode *inode, struct block_device *bdev, > + sector_t block, long _size) Since this is a bdev relative routine we should also resolve the sector, i.e. the signature should drop the inode: int dax_clear_sectors(struct block_device *bdev, sector_t sector, long _size) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>