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[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>
This commit is contained in:
Christoph Hellwig 2008-03-06 13:46:37 +11:00 committed by Lachlan McIlroy
parent ef1f5e7ad3
commit dcf49cc5cf
1 changed files with 3 additions and 5 deletions
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8
fs/xfs/linux-2.6/xfs_lrw.c
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@ -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);