#include "cifs_fs_sb.h"
#include "fscache.h"
#include "smbdirect.h"
+#include "fs_context.h"
static inline int cifs_convert_flags(unsigned int flags)
{
if (rc)
goto out;
+ /* TODO: Add support for calling posix query info but with passing in fid */
if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, inode->i_sb,
xid);
* cifsFileInfo_put - release a reference of file priv data
*
* Always potentially wait for oplock handler. See _cifsFileInfo_put().
+ *
+ * @cifs_file: cifs/smb3 specific info (eg refcounts) for an open file
*/
void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
{
*
* If @wait_for_oplock_handler is true and we are releasing the last
* reference, wait for any running oplock break handler of the file
- * and cancel any pending one. If calling this function from the
- * oplock break handler, you need to pass false.
+ * and cancel any pending one.
+ *
+ * @cifs_file: cifs/smb3 specific info (eg refcounts) for an open file
+ * @wait_oplock_handler: must be false if called from oplock_break_handler
+ * @offload: not offloaded on close and oplock breaks
*
*/
void _cifsFileInfo_put(struct cifsFileInfo *cifs_file,
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
/* can not refresh inode info since size could be stale */
rc = cifs_posix_open(full_path, &inode, inode->i_sb,
- cifs_sb->mnt_file_mode /* ignored */,
+ cifs_sb->ctx->file_mode /* ignored */,
file->f_flags, &oplock, &fid.netfid, xid);
if (rc == 0) {
cifs_dbg(FYI, "posix open succeeded\n");
~(O_CREAT | O_EXCL | O_TRUNC);
rc = cifs_posix_open(full_path, NULL, inode->i_sb,
- cifs_sb->mnt_file_mode /* ignored */,
+ cifs_sb->ctx->file_mode /* ignored */,
oflags, &oplock, &cfile->fid.netfid, xid);
if (rc == 0) {
cifs_dbg(FYI, "posix reopen succeeded\n");
if (!is_interrupt_error(rc))
mapping_set_error(inode->i_mapping, rc);
- if (tcon->unix_ext)
+ if (tcon->posix_extensions)
+ rc = smb311_posix_get_inode_info(&inode, full_path, inode->i_sb, xid);
+ else if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path,
inode->i_sb, xid);
else
tcon->need_reopen_files = false;
- cifs_dbg(FYI, "Reopen persistent handles");
+ cifs_dbg(FYI, "Reopen persistent handles\n");
INIT_LIST_HEAD(&tmp_list);
/* list all files open on tree connection, reopen resilient handles */
/*
* Set the byte-range lock (posix style). Returns:
- * 1) 0, if we set the lock and don't need to request to the server;
- * 2) 1, if we need to request to the server;
- * 3) <0, if the error occurs while setting the lock.
+ * 1) <0, if the error occurs while setting the lock;
+ * 2) 0, if we set the lock and don't need to request to the server;
+ * 3) FILE_LOCK_DEFERRED, if we will wait for some other file_lock;
+ * 4) FILE_LOCK_DEFERRED + 1, if we need to request to the server.
*/
static int
cifs_posix_lock_set(struct file *file, struct file_lock *flock)
{
struct cifsInodeInfo *cinode = CIFS_I(file_inode(file));
- int rc = 1;
+ int rc = FILE_LOCK_DEFERRED + 1;
if ((flock->fl_flags & FL_POSIX) == 0)
return rc;
-try_again:
cifs_down_write(&cinode->lock_sem);
if (!cinode->can_cache_brlcks) {
up_write(&cinode->lock_sem);
rc = posix_lock_file(file, flock, NULL);
up_write(&cinode->lock_sem);
- if (rc == FILE_LOCK_DEFERRED) {
- rc = wait_event_interruptible(flock->fl_wait,
- list_empty(&flock->fl_blocked_member));
- if (!rc)
- goto try_again;
- locks_delete_block(flock);
- }
return rc;
}
int posix_lock_type;
rc = cifs_posix_lock_set(file, flock);
- if (!rc || rc < 0)
+ if (rc <= FILE_LOCK_DEFERRED)
return rc;
if (type & server->vals->shared_lock_type)
unsigned int xid;
struct dentry *dentry = open_file->dentry;
struct cifsInodeInfo *cifsi = CIFS_I(d_inode(dentry));
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
cifs_dbg(FYI, "write %zd bytes to offset %lld of %pd\n",
write_size, *offset, dentry);
rc = cifs_get_writable_file(cifs_inode, flags, &cfile);
if (rc)
- cifs_dbg(FYI, "couldn't find writable handle rc=%d", rc);
+ cifs_dbg(FYI, "Couldn't find writable handle rc=%d\n", rc);
return cfile;
}
struct address_space *mapping, struct writeback_control *wbc)
{
int rc;
- struct TCP_Server_Info *server =
- tlink_tcon(wdata->cfile->tlink)->ses->server;
wdata->sync_mode = wbc->sync_mode;
wdata->nr_pages = nr_pages;
wdata->bytes = ((nr_pages - 1) * PAGE_SIZE) + wdata->tailsz;
wdata->pid = wdata->cfile->pid;
- rc = adjust_credits(server, &wdata->credits, wdata->bytes);
+ rc = adjust_credits(wdata->server, &wdata->credits, wdata->bytes);
if (rc)
return rc;
if (wdata->cfile->invalidHandle)
rc = -EAGAIN;
else
- rc = server->ops->async_writev(wdata, cifs_writedata_release);
+ rc = wdata->server->ops->async_writev(wdata,
+ cifs_writedata_release);
return rc;
}
* If wsize is smaller than the page cache size, default to writing
* one page at a time via cifs_writepage
*/
- if (cifs_sb->wsize < PAGE_SIZE)
+ if (cifs_sb->ctx->wsize < PAGE_SIZE)
return generic_writepages(mapping, wbc);
xid = get_xid();
range_whole = true;
scanned = true;
}
- server = cifs_sb_master_tcon(cifs_sb)->ses->server;
+ server = cifs_pick_channel(cifs_sb_master_tcon(cifs_sb)->ses);
+
retry:
while (!done && index <= end) {
unsigned int i, nr_pages, found_pages, wsize;
if (rc)
get_file_rc = rc;
- rc = server->ops->wait_mtu_credits(server, cifs_sb->wsize,
+ rc = server->ops->wait_mtu_credits(server, cifs_sb->ctx->wsize,
&wsize, credits);
if (rc != 0) {
done = true;
wdata->credits = credits_on_stack;
wdata->cfile = cfile;
+ wdata->server = server;
cfile = NULL;
if (!wdata->cfile) {
unsigned int wsize;
struct cifs_credits credits;
int rc;
- struct TCP_Server_Info *server =
- tlink_tcon(wdata->cfile->tlink)->ses->server;
+ struct TCP_Server_Info *server = wdata->server;
do {
if (wdata->cfile->invalidHandle) {
else
pid = current->tgid;
- server = tlink_tcon(open_file->tlink)->ses->server;
+ server = cifs_pick_channel(tlink_tcon(open_file->tlink)->ses);
xid = get_xid();
do {
break;
}
- rc = server->ops->wait_mtu_credits(server, cifs_sb->wsize,
+ rc = server->ops->wait_mtu_credits(server, cifs_sb->ctx->wsize,
&wsize, credits);
if (rc)
break;
from, &pagevec, cur_len, &start);
if (result < 0) {
cifs_dbg(VFS,
- "direct_writev couldn't get user pages "
- "(rc=%zd) iter type %d iov_offset %zd "
- "count %zd\n",
- result, iov_iter_type(from),
- from->iov_offset, from->count);
+ "direct_writev couldn't get user pages (rc=%zd) iter type %d iov_offset %zd count %zd\n",
+ result, iov_iter_type(from),
+ from->iov_offset, from->count);
dump_stack();
rc = result;
wdata->nr_pages = nr_pages;
wdata->offset = (__u64)offset;
wdata->cfile = cifsFileInfo_get(open_file);
+ wdata->server = server;
wdata->pid = pid;
wdata->bytes = cur_len;
wdata->pagesz = PAGE_SIZE;
unsigned int rsize;
struct cifs_credits credits;
int rc;
- struct TCP_Server_Info *server =
- tlink_tcon(rdata->cfile->tlink)->ses->server;
+ struct TCP_Server_Info *server;
+
+ /* XXX: should we pick a new channel here? */
+ server = rdata->server;
do {
if (rdata->cfile->invalidHandle) {
size_t start;
struct iov_iter direct_iov = ctx->iter;
- server = tlink_tcon(open_file->tlink)->ses->server;
+ server = cifs_pick_channel(tlink_tcon(open_file->tlink)->ses);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
pid = open_file->pid;
break;
}
- rc = server->ops->wait_mtu_credits(server, cifs_sb->rsize,
+ rc = server->ops->wait_mtu_credits(server, cifs_sb->ctx->rsize,
&rsize, credits);
if (rc)
break;
cur_len, &start);
if (result < 0) {
cifs_dbg(VFS,
- "couldn't get user pages (rc=%zd)"
- " iter type %d"
- " iov_offset %zd count %zd\n",
- result, iov_iter_type(&direct_iov),
- direct_iov.iov_offset,
- direct_iov.count);
+ "Couldn't get user pages (rc=%zd) iter type %d iov_offset %zd count %zd\n",
+ result, iov_iter_type(&direct_iov),
+ direct_iov.iov_offset,
+ direct_iov.count);
dump_stack();
rc = result;
rdata->tailsz = PAGE_SIZE;
}
+ rdata->server = server;
rdata->cfile = cifsFileInfo_get(open_file);
rdata->nr_pages = npages;
rdata->offset = offset;
unsigned int xid;
char *cur_offset;
struct cifsFileInfo *open_file;
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
int buf_type = CIFS_NO_BUFFER;
__u32 pid;
cifs_sb = CIFS_FILE_SB(file);
/* FIXME: set up handlers for larger reads and/or convert to async */
- rsize = min_t(unsigned int, cifs_sb->rsize, CIFSMaxBufSize);
+ rsize = min_t(unsigned int, cifs_sb->ctx->rsize, CIFSMaxBufSize);
if (file->private_data == NULL) {
rc = -EBADF;
}
open_file = file->private_data;
tcon = tlink_tcon(open_file->tlink);
- server = tcon->ses->server;
+ server = cifs_pick_channel(tcon->ses);
if (!server->ops->sync_read) {
free_xid(xid);
io_parms.tcon = tcon;
io_parms.offset = *offset;
io_parms.length = current_read_size;
+ io_parms.server = server;
rc = server->ops->sync_read(xid, &open_file->fid, &io_parms,
&bytes_read, &cur_offset,
&buf_type);
for (i = 0; i < rdata->nr_pages; i++) {
struct page *page = rdata->pages[i];
- lru_cache_add_file(page);
+ lru_cache_add(page);
if (rdata->result == 0 ||
(rdata->result == -EAGAIN && got_bytes)) {
* fill them until the writes are flushed.
*/
zero_user(page, 0, PAGE_SIZE);
- lru_cache_add_file(page);
+ lru_cache_add(page);
flush_dcache_page(page);
SetPageUptodate(page);
unlock_page(page);
continue;
} else {
/* no need to hold page hostage */
- lru_cache_add_file(page);
+ lru_cache_add(page);
unlock_page(page);
put_page(page);
rdata->pages[i] = NULL;
break;
__SetPageLocked(page);
- if (add_to_page_cache_locked(page, mapping, page->index, gfp)) {
+ rc = add_to_page_cache_locked(page, mapping, page->index, gfp);
+ if (rc) {
__ClearPageLocked(page);
break;
}
struct list_head *page_list, unsigned num_pages)
{
int rc;
+ int err = 0;
struct list_head tmplist;
struct cifsFileInfo *open_file = file->private_data;
struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
pid = current->tgid;
rc = 0;
- server = tlink_tcon(open_file->tlink)->ses->server;
+ server = cifs_pick_channel(tlink_tcon(open_file->tlink)->ses);
cifs_dbg(FYI, "%s: file=%p mapping=%p num_pages=%u\n",
__func__, file, mapping, num_pages);
* the order of declining indexes. When we put the pages in
* the rdata->pages, then we want them in increasing order.
*/
- while (!list_empty(page_list)) {
+ while (!list_empty(page_list) && !err) {
unsigned int i, nr_pages, bytes, rsize;
loff_t offset;
struct page *page, *tpage;
break;
}
- rc = server->ops->wait_mtu_credits(server, cifs_sb->rsize,
+ rc = server->ops->wait_mtu_credits(server, cifs_sb->ctx->rsize,
&rsize, credits);
if (rc)
break;
return 0;
}
- rc = readpages_get_pages(mapping, page_list, rsize, &tmplist,
+ nr_pages = 0;
+ err = readpages_get_pages(mapping, page_list, rsize, &tmplist,
&nr_pages, &offset, &bytes);
- if (rc) {
+ if (!nr_pages) {
add_credits_and_wake_if(server, credits, 0);
break;
}
/* best to give up if we're out of mem */
list_for_each_entry_safe(page, tpage, &tmplist, lru) {
list_del(&page->lru);
- lru_cache_add_file(page);
+ lru_cache_add(page);
unlock_page(page);
put_page(page);
}
}
rdata->cfile = cifsFileInfo_get(open_file);
+ rdata->server = server;
rdata->mapping = mapping;
rdata->offset = offset;
rdata->bytes = bytes;
add_credits_and_wake_if(server, &rdata->credits, 0);
for (i = 0; i < rdata->nr_pages; i++) {
page = rdata->pages[i];
- lru_cache_add_file(page);
+ lru_cache_add(page);
unlock_page(page);
put_page(page);
}
}
*span = sis->pages;
- printk_once(KERN_WARNING "Swap support over SMB3 is experimental\n");
+ pr_warn_once("Swap support over SMB3 is experimental\n");
/*
* TODO: consider adding ACL (or documenting how) to prevent other
projects / linux-2.6-microblaze.git / blobdiff