From 6214ed4461f1ad8aeec41857c73d58afb31be335 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 14 Sep 2007 15:23:17 +1000 Subject: [PATCH] [XFS] kill BMAPI_DEVICE There is no reason to go into the iomap machinery just to get the right block device for an inode. Instead look at the realtime flag in the inode and grab the right device from the mount structure. I created a new helper, xfs_find_bdev_for_inode instead of opencoding it because I plan to use it in other places in the future. SGI-PV: 970240 SGI-Modid: xfs-linux-melb:xfs-kern:29680a Signed-off-by: Christoph Hellwig Signed-off-by: Donald Douwsma Signed-off-by: Tim Shimmin --- fs/xfs/linux-2.6/xfs_aops.c | 27 ++++++++++++++++----------- fs/xfs/xfs_iomap.c | 9 +-------- fs/xfs/xfs_iomap.h | 1 - 3 files changed, 17 insertions(+), 20 deletions(-) diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index 31269cbd5e1a..43f5a75fc3c0 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -107,6 +107,18 @@ xfs_page_trace( #define xfs_page_trace(tag, inode, page, pgoff) #endif +STATIC struct block_device * +xfs_find_bdev_for_inode( + struct xfs_inode *ip) +{ + struct xfs_mount *mp = ip->i_mount; + + if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) + return mp->m_rtdev_targp->bt_bdev; + else + return mp->m_ddev_targp->bt_bdev; +} + /* * Schedule IO completion handling on a xfsdatad if this was * the final hold on this ioend. If we are asked to wait, @@ -1471,28 +1483,21 @@ xfs_vm_direct_IO( { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; - xfs_iomap_t iomap; - int maps = 1; - int error; + struct block_device *bdev; ssize_t ret; - error = xfs_bmap(XFS_I(inode), offset, 0, - BMAPI_DEVICE, &iomap, &maps); - if (error) - return -error; + bdev = xfs_find_bdev_for_inode(XFS_I(inode)); if (rw == WRITE) { iocb->private = xfs_alloc_ioend(inode, IOMAP_UNWRITTEN); ret = blockdev_direct_IO_own_locking(rw, iocb, inode, - iomap.iomap_target->bt_bdev, - iov, offset, nr_segs, + bdev, iov, offset, nr_segs, xfs_get_blocks_direct, xfs_end_io_direct); } else { iocb->private = xfs_alloc_ioend(inode, IOMAP_READ); ret = blockdev_direct_IO_no_locking(rw, iocb, inode, - iomap.iomap_target->bt_bdev, - iov, offset, nr_segs, + bdev, iov, offset, nr_segs, xfs_get_blocks_direct, xfs_end_io_direct); } diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 72786e356d56..58cda06a1846 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -193,7 +193,7 @@ xfs_iomap( switch (flags & (BMAPI_READ | BMAPI_WRITE | BMAPI_ALLOCATE | - BMAPI_UNWRITTEN | BMAPI_DEVICE)) { + BMAPI_UNWRITTEN)) { case BMAPI_READ: xfs_iomap_enter_trace(XFS_IOMAP_READ_ENTER, io, offset, count); lockmode = XFS_LCK_MAP_SHARED(mp, io); @@ -220,13 +220,6 @@ xfs_iomap( break; case BMAPI_UNWRITTEN: goto phase2; - case BMAPI_DEVICE: - lockmode = XFS_LCK_MAP_SHARED(mp, io); - iomapp->iomap_target = io->io_flags & XFS_IOCORE_RT ? - mp->m_rtdev_targp : mp->m_ddev_targp; - error = 0; - *niomaps = 1; - goto out; default: BUG(); } diff --git a/fs/xfs/xfs_iomap.h b/fs/xfs/xfs_iomap.h index f5c09887fe93..2b94874e92d1 100644 --- a/fs/xfs/xfs_iomap.h +++ b/fs/xfs/xfs_iomap.h @@ -43,7 +43,6 @@ typedef enum { BMAPI_MMAP = (1 << 6), /* allocate for mmap write */ BMAPI_SYNC = (1 << 7), /* sync write to flush delalloc space */ BMAPI_TRYLOCK = (1 << 8), /* non-blocking request */ - BMAPI_DEVICE = (1 << 9), /* we only want to know the device */ } bmapi_flags_t; -- 2.20.1