* If the server returned a read oplock and we have mandatory brlocks,
* set oplock level to None.
*/
- if (oplock == server->vals->oplock_read &&
- cifs_has_mand_locks(cinode)) {
+ if (server->ops->is_read_op(oplock) && cifs_has_mand_locks(cinode)) {
cifs_dbg(FYI, "Reset oplock val from read to None due to mand locks\n");
oplock = 0;
}
oplock = fid->pending_open->oplock;
list_del(&fid->pending_open->olist);
+ fid->purge_cache = false;
server->ops->set_fid(cfile, fid, oplock);
list_add(&cfile->tlist, &tcon->openFileList);
list_add_tail(&cfile->flist, &cinode->openFileList);
spin_unlock(&cifs_file_list_lock);
+ if (fid->purge_cache)
+ cifs_invalidate_mapping(inode);
+
file->private_data = cfile;
return cfile;
}
* read won't conflict with non-overlapted locks due to
* pagereading.
*/
- if (!CIFS_I(inode)->clientCanCacheAll &&
- CIFS_I(inode)->clientCanCacheRead) {
+ if (!CIFS_CACHE_WRITE(CIFS_I(inode)) &&
+ CIFS_CACHE_READ(CIFS_I(inode))) {
cifs_invalidate_mapping(inode);
cifs_dbg(FYI, "Set no oplock for inode=%p due to mand locks\n",
inode);
- CIFS_I(inode)->clientCanCacheRead = false;
+ CIFS_I(inode)->oplock = 0;
}
rc = server->ops->mand_lock(xid, cfile, flock->fl_start, length,
cifs_dbg(FYI, "Sync file - name: %s datasync: 0x%x\n",
file->f_path.dentry->d_name.name, datasync);
- if (!CIFS_I(inode)->clientCanCacheRead) {
+ if (!CIFS_CACHE_READ(CIFS_I(inode))) {
rc = cifs_invalidate_mapping(inode);
if (rc) {
cifs_dbg(FYI, "rc: %d during invalidate phase\n", rc);
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
ssize_t written;
- if (cinode->clientCanCacheAll) {
+ if (CIFS_CACHE_WRITE(cinode)) {
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability))
&& ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
* these pages but not on the region from pos to ppos+len-1.
*/
written = cifs_user_writev(iocb, iov, nr_segs, pos);
- if (written > 0 && cinode->clientCanCacheRead) {
+ if (written > 0 && CIFS_CACHE_READ(cinode)) {
/*
* Windows 7 server can delay breaking level2 oplock if a write
* request comes - break it on the client to prevent reading
cifs_invalidate_mapping(inode);
cifs_dbg(FYI, "Set no oplock for inode=%p after a write operation\n",
inode);
- cinode->clientCanCacheRead = false;
+ cinode->oplock = 0;
}
return written;
}
* on pages affected by this read but not on the region from pos to
* pos+len-1.
*/
- if (!cinode->clientCanCacheRead)
+ if (!CIFS_CACHE_READ(cinode))
return cifs_user_readv(iocb, iov, nr_segs, pos);
if (cap_unix(tcon->ses) &&
xid = get_xid();
- if (!CIFS_I(inode)->clientCanCacheRead) {
+ if (!CIFS_CACHE_READ(CIFS_I(inode))) {
rc = cifs_invalidate_mapping(inode);
if (rc)
return rc;
return rc;
}
+/*
+ * cifs_readpage_worker must be called with the page pinned
+ */
static int cifs_readpage_worker(struct file *file, struct page *page,
loff_t *poffset)
{
if (rc == 0)
goto read_complete;
- page_cache_get(page);
read_data = kmap(page);
/* for reads over a certain size could initiate async read ahead */
io_error:
kunmap(page);
- page_cache_release(page);
+ unlock_page(page);
read_complete:
return rc;
rc = cifs_readpage_worker(file, page, &offset);
- unlock_page(page);
-
free_xid(xid);
return rc;
}
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
+ int oncethru = 0;
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
loff_t offset = pos & (PAGE_CACHE_SIZE - 1);
loff_t page_start = pos & PAGE_MASK;
cifs_dbg(FYI, "write_begin from %lld len %d\n", (long long)pos, len);
+start:
page = grab_cache_page_write_begin(mapping, index, flags);
if (!page) {
rc = -ENOMEM;
* is, when the page lies beyond the EOF, or straddles the EOF
* and the write will cover all of the existing data.
*/
- if (CIFS_I(mapping->host)->clientCanCacheRead) {
+ if (CIFS_CACHE_READ(CIFS_I(mapping->host))) {
i_size = i_size_read(mapping->host);
if (page_start >= i_size ||
(offset == 0 && (pos + len) >= i_size)) {
}
}
- if ((file->f_flags & O_ACCMODE) != O_WRONLY) {
+ if ((file->f_flags & O_ACCMODE) != O_WRONLY && !oncethru) {
/*
* might as well read a page, it is fast enough. If we get
* an error, we don't need to return it. cifs_write_end will
* do a sync write instead since PG_uptodate isn't set.
*/
cifs_readpage_worker(file, page, &page_start);
+ page_cache_release(page);
+ oncethru = 1;
+ goto start;
} else {
/* we could try using another file handle if there is one -
but how would we lock it to prevent close of that handle
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
int rc = 0;
- if (!cinode->clientCanCacheAll && cinode->clientCanCacheRead &&
+ if (!CIFS_CACHE_WRITE(cinode) && CIFS_CACHE_READ(cinode) &&
cifs_has_mand_locks(cinode)) {
cifs_dbg(FYI, "Reset oplock to None for inode=%p due to mand locks\n",
inode);
- cinode->clientCanCacheRead = false;
+ cinode->oplock = 0;
}
if (inode && S_ISREG(inode->i_mode)) {
- if (cinode->clientCanCacheRead)
+ if (CIFS_CACHE_READ(cinode))
break_lease(inode, O_RDONLY);
else
break_lease(inode, O_WRONLY);
rc = filemap_fdatawrite(inode->i_mapping);
- if (cinode->clientCanCacheRead == 0) {
+ if (!CIFS_CACHE_READ(cinode)) {
rc = filemap_fdatawait(inode->i_mapping);
mapping_set_error(inode->i_mapping, rc);
cifs_invalidate_mapping(inode);
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