[XFS] cleanup vnode use in xfs_lrw.c

SGI-PV: 976035
SGI-Modid: xfs-linux-melb:xfs-kern:30551a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index 01a8f26..1d95dca 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -176,7 +176,6 @@ xfs_read(
 {
        struct file             *file = iocb->ki_filp;
        struct inode            *inode = file->f_mapping->host;
-       bhv_vnode_t             *vp = XFS_ITOV(ip);
        xfs_mount_t             *mp = ip->i_mount;
        size_t                  size = 0;
        ssize_t                 ret = 0;
@@ -242,7 +241,7 @@ xfs_read(
        }
 
        if (unlikely(ioflags & IO_ISDIRECT)) {
-               if (VN_CACHED(vp))
+               if (inode->i_mapping->nrpages)
                        ret = xfs_flushinval_pages(ip, (*offset & PAGE_CACHE_MASK),
                                                    -1, FI_REMAPF_LOCKED);
                mutex_unlock(&inode->i_mutex);
@@ -571,7 +570,6 @@ xfs_write(
        struct file             *file = iocb->ki_filp;
        struct address_space    *mapping = file->f_mapping;
        struct inode            *inode = mapping->host;
-       bhv_vnode_t             *vp = XFS_ITOV(xip);
        unsigned long           segs = nsegs;
        xfs_mount_t             *mp;
        ssize_t                 ret = 0, error = 0;
@@ -658,7 +656,7 @@ start:
                        return XFS_ERROR(-EINVAL);
                }
 
-               if (!need_i_mutex && (VN_CACHED(vp) || pos > xip->i_size)) {
+               if (!need_i_mutex && (mapping->nrpages || pos > xip->i_size)) {
                        xfs_iunlock(xip, XFS_ILOCK_EXCL|iolock);
                        iolock = XFS_IOLOCK_EXCL;
                        need_i_mutex = 1;
@@ -720,7 +718,7 @@ retry:
        current->backing_dev_info = mapping->backing_dev_info;
 
        if ((ioflags & IO_ISDIRECT)) {
-               if (VN_CACHED(vp)) {
+               if (mapping->nrpages) {
                        WARN_ON(need_i_mutex == 0);
                        xfs_inval_cached_trace(xip, pos, -1,
                                        (pos & PAGE_CACHE_MASK), -1);