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fs/9p: Move writeback fid to v9fs_inode

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Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
This commit is contained in:
Aneesh Kumar K.V
2011-02-28 17:04:03 +05:30
committed by Eric Van Hensbergen
parent a78ce05d5d
commit 6b39f6d22f
5 changed files with 41 additions and 24 deletions
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12
fs/9p/vfs_file.c
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@@ -56,11 +56,13 @@ static const struct vm_operations_struct v9fs_file_vm_ops;
int v9fs_file_open(struct inode *inode, struct file *file)
{
int err;
struct v9fs_inode *v9inode;
struct v9fs_session_info *v9ses;
struct p9_fid *fid;
int omode;
P9_DPRINTK(P9_DEBUG_VFS, "inode: %p file: %p\n", inode, file);
v9inode = V9FS_I(inode);
v9ses = v9fs_inode2v9ses(inode);
if (v9fs_proto_dotl(v9ses))
omode = file->f_flags;
@@ -88,9 +90,9 @@ int v9fs_file_open(struct inode *inode, struct file *file)
}
file->private_data = fid;
if (v9ses->cache && !inode->i_private) {
if (v9ses->cache && !v9inode->writeback_fid) {
/*
* clone a fid and add it to inode->i_private
* clone a fid and add it to writeback_fid
* we do it during open time instead of
* page dirty time via write_begin/page_mkwrite
* because we want write after unlink usecase
@@ -101,7 +103,7 @@ int v9fs_file_open(struct inode *inode, struct file *file)
err = PTR_ERR(fid);
goto out_error;
}
inode->i_private = (void *) fid;
v9inode->writeback_fid = (void *) fid;
}
#ifdef CONFIG_9P_FSCACHE
if (v9ses->cache)
@@ -550,6 +552,7 @@ v9fs_file_mmap(struct file *file, struct vm_area_struct *vma)
static int
v9fs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct v9fs_inode *v9inode;
struct page *page = vmf->page;
struct file *filp = vma->vm_file;
struct inode *inode = filp->f_path.dentry->d_inode;
@@ -558,9 +561,10 @@ v9fs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
P9_DPRINTK(P9_DEBUG_VFS, "page %p fid %lx\n",
page, (unsigned long)filp->private_data);
v9inode = V9FS_I(inode);
/* make sure the cache has finished storing the page */
v9fs_fscache_wait_on_page_write(inode, page);
BUG_ON(!inode->i_private);
BUG_ON(!v9inode->writeback_fid);
lock_page(page);
if (page->mapping != inode->i_mapping)
goto out_unlock;