break;
}
- len = min((size_t)cifs_sb->wsize,
- write_size - total_written);
+ len = min(server->ops->wp_retry_size(dentry->d_inode),
+ (unsigned int)write_size - total_written);
/* iov[0] is reserved for smb header */
iov[1].iov_base = (char *)write_data + total_written;
iov[1].iov_len = len;
struct writeback_control *wbc)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(mapping->host->i_sb);
+ struct TCP_Server_Info *server;
bool done = false, scanned = false, range_whole = false;
pgoff_t end, index;
struct cifs_writedata *wdata;
range_whole = true;
scanned = true;
}
+ server = cifs_sb_master_tcon(cifs_sb)->ses->server;
retry:
while (!done && index <= end) {
- unsigned int i, nr_pages, found_pages;
+ unsigned int i, nr_pages, found_pages, wsize, credits;
pgoff_t next = 0, tofind, saved_index = index;
- tofind = min((cifs_sb->wsize / PAGE_CACHE_SIZE) - 1,
- end - index) + 1;
+ rc = server->ops->wait_mtu_credits(server, cifs_sb->wsize,
+ &wsize, &credits);
+ if (rc)
+ break;
+
+ tofind = min((wsize / PAGE_CACHE_SIZE) - 1, end - index) + 1;
wdata = wdata_alloc_and_fillpages(tofind, mapping, end, &index,
&found_pages);
if (!wdata) {
rc = -ENOMEM;
+ add_credits_and_wake_if(server, credits, 0);
break;
}
if (found_pages == 0) {
kref_put(&wdata->refcount, cifs_writedata_release);
+ add_credits_and_wake_if(server, credits, 0);
break;
}
/* nothing to write? */
if (nr_pages == 0) {
kref_put(&wdata->refcount, cifs_writedata_release);
+ add_credits_and_wake_if(server, credits, 0);
continue;
}
+ wdata->credits = credits;
+
rc = wdata_send_pages(wdata, nr_pages, mapping, wbc);
/* send failure -- clean up the mess */
if (rc != 0) {
+ add_credits_and_wake_if(server, wdata->credits, 0);
for (i = 0; i < nr_pages; ++i) {
if (rc == -EAGAIN)
redirty_page_for_writepage(wbc,
kref_put(&wdata->refcount, cifs_uncached_writedata_release);
}
-/* attempt to send write to server, retry on any -EAGAIN errors */
-static int
-cifs_uncached_retry_writev(struct cifs_writedata *wdata)
-{
- int rc;
- struct TCP_Server_Info *server;
-
- server = tlink_tcon(wdata->cfile->tlink)->ses->server;
-
- do {
- if (wdata->cfile->invalidHandle) {
- rc = cifs_reopen_file(wdata->cfile, false);
- if (rc != 0)
- continue;
- }
- rc = server->ops->async_writev(wdata,
- cifs_uncached_writedata_release);
- } while (rc == -EAGAIN);
-
- return rc;
-}
-
static int
wdata_fill_from_iovec(struct cifs_writedata *wdata, struct iov_iter *from,
size_t *len, unsigned long *num_pages)
size_t cur_len;
unsigned long nr_pages, num_pages, i;
struct cifs_writedata *wdata;
+ struct iov_iter saved_from;
+ loff_t saved_offset = offset;
pid_t pid;
+ struct TCP_Server_Info *server;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
pid = open_file->pid;
else
pid = current->tgid;
+ server = tlink_tcon(open_file->tlink)->ses->server;
+ memcpy(&saved_from, from, sizeof(struct iov_iter));
+
do {
- nr_pages = get_numpages(cifs_sb->wsize, len, &cur_len);
+ unsigned int wsize, credits;
+
+ rc = server->ops->wait_mtu_credits(server, cifs_sb->wsize,
+ &wsize, &credits);
+ if (rc)
+ break;
+
+ nr_pages = get_numpages(wsize, len, &cur_len);
wdata = cifs_writedata_alloc(nr_pages,
cifs_uncached_writev_complete);
if (!wdata) {
rc = -ENOMEM;
+ add_credits_and_wake_if(server, credits, 0);
break;
}
rc = cifs_write_allocate_pages(wdata->pages, nr_pages);
if (rc) {
kfree(wdata);
+ add_credits_and_wake_if(server, credits, 0);
break;
}
for (i = 0; i < nr_pages; i++)
put_page(wdata->pages[i]);
kfree(wdata);
+ add_credits_and_wake_if(server, credits, 0);
break;
}
wdata->bytes = cur_len;
wdata->pagesz = PAGE_SIZE;
wdata->tailsz = cur_len - ((nr_pages - 1) * PAGE_SIZE);
- rc = cifs_uncached_retry_writev(wdata);
+ wdata->credits = credits;
+
+ if (!wdata->cfile->invalidHandle ||
+ !cifs_reopen_file(wdata->cfile, false))
+ rc = server->ops->async_writev(wdata,
+ cifs_uncached_writedata_release);
if (rc) {
+ add_credits_and_wake_if(server, wdata->credits, 0);
kref_put(&wdata->refcount,
cifs_uncached_writedata_release);
+ if (rc == -EAGAIN) {
+ memcpy(from, &saved_from,
+ sizeof(struct iov_iter));
+ iov_iter_advance(from, offset - saved_offset);
+ continue;
+ }
break;
}
struct cifs_sb_info *cifs_sb;
struct cifs_writedata *wdata, *tmp;
struct list_head wdata_list;
+ struct iov_iter saved_from;
int rc;
len = iov_iter_count(from);
if (!tcon->ses->server->ops->async_writev)
return -ENOSYS;
+ memcpy(&saved_from, from, sizeof(struct iov_iter));
+
rc = cifs_write_from_iter(*poffset, len, from, open_file, cifs_sb,
&wdata_list);
/* resend call if it's a retryable error */
if (rc == -EAGAIN) {
- rc = cifs_uncached_retry_writev(wdata);
+ struct list_head tmp_list;
+ struct iov_iter tmp_from;
+
+ INIT_LIST_HEAD(&tmp_list);
+ list_del_init(&wdata->list);
+
+ memcpy(&tmp_from, &saved_from,
+ sizeof(struct iov_iter));
+ iov_iter_advance(&tmp_from,
+ wdata->offset - *poffset);
+
+ rc = cifs_write_from_iter(wdata->offset,
+ wdata->bytes, &tmp_from,
+ open_file, cifs_sb, &tmp_list);
+
+ list_splice(&tmp_list, &wdata_list);
+
+ kref_put(&wdata->refcount,
+ cifs_uncached_writedata_release);
goto restart_loop;
}
}
cifs_readdata_release(refcount);
}
-static int
-cifs_retry_async_readv(struct cifs_readdata *rdata)
-{
- int rc;
- struct TCP_Server_Info *server;
-
- server = tlink_tcon(rdata->cfile->tlink)->ses->server;
-
- do {
- if (rdata->cfile->invalidHandle) {
- rc = cifs_reopen_file(rdata->cfile, true);
- if (rc != 0)
- continue;
- }
- rc = server->ops->async_readv(rdata);
- } while (rc == -EAGAIN);
-
- return rc;
-}
-
/**
* cifs_readdata_to_iov - copy data from pages in response to an iovec
* @rdata: the readdata response with list of pages holding data
static int
cifs_readdata_to_iov(struct cifs_readdata *rdata, struct iov_iter *iter)
{
- size_t remaining = rdata->bytes;
+ size_t remaining = rdata->got_bytes;
unsigned int i;
for (i = 0; i < rdata->nr_pages; i++) {
cifs_uncached_read_into_pages(struct TCP_Server_Info *server,
struct cifs_readdata *rdata, unsigned int len)
{
- int total_read = 0, result = 0;
+ int result = 0;
unsigned int i;
unsigned int nr_pages = rdata->nr_pages;
struct kvec iov;
+ rdata->got_bytes = 0;
rdata->tailsz = PAGE_SIZE;
for (i = 0; i < nr_pages; i++) {
struct page *page = rdata->pages[i];
if (result < 0)
break;
- total_read += result;
+ rdata->got_bytes += result;
}
- return total_read > 0 && result != -EAGAIN ? total_read : result;
+ return rdata->got_bytes > 0 && result != -ECONNABORTED ?
+ rdata->got_bytes : result;
}
-ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to)
+static int
+cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file,
+ struct cifs_sb_info *cifs_sb, struct list_head *rdata_list)
{
- struct file *file = iocb->ki_filp;
- ssize_t rc;
- size_t len, cur_len;
- ssize_t total_read = 0;
- loff_t offset = iocb->ki_pos;
- unsigned int npages;
- struct cifs_sb_info *cifs_sb;
- struct cifs_tcon *tcon;
- struct cifsFileInfo *open_file;
- struct cifs_readdata *rdata, *tmp;
- struct list_head rdata_list;
+ struct cifs_readdata *rdata;
+ unsigned int npages, rsize, credits;
+ size_t cur_len;
+ int rc;
pid_t pid;
+ struct TCP_Server_Info *server;
- len = iov_iter_count(to);
- if (!len)
- return 0;
-
- INIT_LIST_HEAD(&rdata_list);
- cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
- open_file = file->private_data;
- tcon = tlink_tcon(open_file->tlink);
-
- if (!tcon->ses->server->ops->async_readv)
- return -ENOSYS;
+ server = tlink_tcon(open_file->tlink)->ses->server;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
pid = open_file->pid;
else
pid = current->tgid;
- if ((file->f_flags & O_ACCMODE) == O_WRONLY)
- cifs_dbg(FYI, "attempting read on write only file instance\n");
-
do {
- cur_len = min_t(const size_t, len - total_read, cifs_sb->rsize);
+ rc = server->ops->wait_mtu_credits(server, cifs_sb->rsize,
+ &rsize, &credits);
+ if (rc)
+ break;
+
+ cur_len = min_t(const size_t, len, rsize);
npages = DIV_ROUND_UP(cur_len, PAGE_SIZE);
/* allocate a readdata struct */
rdata = cifs_readdata_alloc(npages,
cifs_uncached_readv_complete);
if (!rdata) {
+ add_credits_and_wake_if(server, credits, 0);
rc = -ENOMEM;
break;
}
rdata->pid = pid;
rdata->pagesz = PAGE_SIZE;
rdata->read_into_pages = cifs_uncached_read_into_pages;
+ rdata->credits = credits;
- rc = cifs_retry_async_readv(rdata);
+ if (!rdata->cfile->invalidHandle ||
+ !cifs_reopen_file(rdata->cfile, true))
+ rc = server->ops->async_readv(rdata);
error:
if (rc) {
+ add_credits_and_wake_if(server, rdata->credits, 0);
kref_put(&rdata->refcount,
cifs_uncached_readdata_release);
+ if (rc == -EAGAIN)
+ continue;
break;
}
- list_add_tail(&rdata->list, &rdata_list);
+ list_add_tail(&rdata->list, rdata_list);
offset += cur_len;
len -= cur_len;
} while (len > 0);
+ return rc;
+}
+
+ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to)
+{
+ struct file *file = iocb->ki_filp;
+ ssize_t rc;
+ size_t len;
+ ssize_t total_read = 0;
+ loff_t offset = iocb->ki_pos;
+ struct cifs_sb_info *cifs_sb;
+ struct cifs_tcon *tcon;
+ struct cifsFileInfo *open_file;
+ struct cifs_readdata *rdata, *tmp;
+ struct list_head rdata_list;
+
+ len = iov_iter_count(to);
+ if (!len)
+ return 0;
+
+ INIT_LIST_HEAD(&rdata_list);
+ cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+ open_file = file->private_data;
+ tcon = tlink_tcon(open_file->tlink);
+
+ if (!tcon->ses->server->ops->async_readv)
+ return -ENOSYS;
+
+ if ((file->f_flags & O_ACCMODE) == O_WRONLY)
+ cifs_dbg(FYI, "attempting read on write only file instance\n");
+
+ rc = cifs_send_async_read(offset, len, open_file, cifs_sb, &rdata_list);
+
/* if at least one read request send succeeded, then reset rc */
if (!list_empty(&rdata_list))
rc = 0;
len = iov_iter_count(to);
/* the loop below should proceed in the order of increasing offsets */
+again:
list_for_each_entry_safe(rdata, tmp, &rdata_list, list) {
- again:
if (!rc) {
/* FIXME: freezable sleep too? */
rc = wait_for_completion_killable(&rdata->done);
if (rc)
rc = -EINTR;
- else if (rdata->result) {
- rc = rdata->result;
+ else if (rdata->result == -EAGAIN) {
/* resend call if it's a retryable error */
- if (rc == -EAGAIN) {
- rc = cifs_retry_async_readv(rdata);
- goto again;
+ struct list_head tmp_list;
+ unsigned int got_bytes = rdata->got_bytes;
+
+ list_del_init(&rdata->list);
+ INIT_LIST_HEAD(&tmp_list);
+
+ /*
+ * Got a part of data and then reconnect has
+ * happened -- fill the buffer and continue
+ * reading.
+ */
+ if (got_bytes && got_bytes < rdata->bytes) {
+ rc = cifs_readdata_to_iov(rdata, to);
+ if (rc) {
+ kref_put(&rdata->refcount,
+ cifs_uncached_readdata_release);
+ continue;
+ }
}
- } else {
+
+ rc = cifs_send_async_read(
+ rdata->offset + got_bytes,
+ rdata->bytes - got_bytes,
+ rdata->cfile, cifs_sb,
+ &tmp_list);
+
+ list_splice(&tmp_list, &rdata_list);
+
+ kref_put(&rdata->refcount,
+ cifs_uncached_readdata_release);
+ goto again;
+ } else if (rdata->result)
+ rc = rdata->result;
+ else
rc = cifs_readdata_to_iov(rdata, to);
- }
+ /* if there was a short read -- discard anything left */
+ if (rdata->got_bytes && rdata->got_bytes < rdata->bytes)
+ rc = -ENODATA;
}
list_del_init(&rdata->list);
kref_put(&rdata->refcount, cifs_uncached_readdata_release);
for (total_read = 0, cur_offset = read_data; read_size > total_read;
total_read += bytes_read, cur_offset += bytes_read) {
- current_read_size = min_t(uint, read_size - total_read, rsize);
- /*
- * For windows me and 9x we do not want to request more than it
- * negotiated since it will refuse the read then.
- */
- if ((tcon->ses) && !(tcon->ses->capabilities &
+ do {
+ current_read_size = min_t(uint, read_size - total_read,
+ rsize);
+ /*
+ * For windows me and 9x we do not want to request more
+ * than it negotiated since it will refuse the read
+ * then.
+ */
+ if ((tcon->ses) && !(tcon->ses->capabilities &
tcon->ses->server->vals->cap_large_files)) {
- current_read_size = min_t(uint, current_read_size,
- CIFSMaxBufSize);
- }
- rc = -EAGAIN;
- while (rc == -EAGAIN) {
+ current_read_size = min_t(uint,
+ current_read_size, CIFSMaxBufSize);
+ }
if (open_file->invalidHandle) {
rc = cifs_reopen_file(open_file, true);
if (rc != 0)
rc = server->ops->sync_read(xid, open_file, &io_parms,
&bytes_read, &cur_offset,
&buf_type);
- }
+ } while (rc == -EAGAIN);
+
if (rc || (bytes_read == 0)) {
if (total_read) {
break;
static void
cifs_readv_complete(struct work_struct *work)
{
- unsigned int i;
+ unsigned int i, got_bytes;
struct cifs_readdata *rdata = container_of(work,
struct cifs_readdata, work);
+ got_bytes = rdata->got_bytes;
for (i = 0; i < rdata->nr_pages; i++) {
struct page *page = rdata->pages[i];
lru_cache_add_file(page);
- if (rdata->result == 0) {
+ if (rdata->result == 0 ||
+ (rdata->result == -EAGAIN && got_bytes)) {
flush_dcache_page(page);
SetPageUptodate(page);
}
unlock_page(page);
- if (rdata->result == 0)
+ if (rdata->result == 0 ||
+ (rdata->result == -EAGAIN && got_bytes))
cifs_readpage_to_fscache(rdata->mapping->host, page);
+ got_bytes -= min_t(unsigned int, PAGE_CACHE_SIZE, got_bytes);
+
page_cache_release(page);
rdata->pages[i] = NULL;
}
cifs_readpages_read_into_pages(struct TCP_Server_Info *server,
struct cifs_readdata *rdata, unsigned int len)
{
- int total_read = 0, result = 0;
+ int result = 0;
unsigned int i;
u64 eof;
pgoff_t eof_index;
eof_index = eof ? (eof - 1) >> PAGE_CACHE_SHIFT : 0;
cifs_dbg(FYI, "eof=%llu eof_index=%lu\n", eof, eof_index);
+ rdata->got_bytes = 0;
rdata->tailsz = PAGE_CACHE_SIZE;
for (i = 0; i < nr_pages; i++) {
struct page *page = rdata->pages[i];
if (result < 0)
break;
- total_read += result;
+ rdata->got_bytes += result;
+ }
+
+ return rdata->got_bytes > 0 && result != -ECONNABORTED ?
+ rdata->got_bytes : result;
+}
+
+static int
+readpages_get_pages(struct address_space *mapping, struct list_head *page_list,
+ unsigned int rsize, struct list_head *tmplist,
+ unsigned int *nr_pages, loff_t *offset, unsigned int *bytes)
+{
+ struct page *page, *tpage;
+ unsigned int expected_index;
+ int rc;
+
+ INIT_LIST_HEAD(tmplist);
+
+ page = list_entry(page_list->prev, struct page, lru);
+
+ /*
+ * Lock the page and put it in the cache. Since no one else
+ * should have access to this page, we're safe to simply set
+ * PG_locked without checking it first.
+ */
+ __set_page_locked(page);
+ rc = add_to_page_cache_locked(page, mapping,
+ page->index, GFP_KERNEL);
+
+ /* give up if we can't stick it in the cache */
+ if (rc) {
+ __clear_page_locked(page);
+ return rc;
}
- return total_read > 0 && result != -EAGAIN ? total_read : result;
+ /* move first page to the tmplist */
+ *offset = (loff_t)page->index << PAGE_CACHE_SHIFT;
+ *bytes = PAGE_CACHE_SIZE;
+ *nr_pages = 1;
+ list_move_tail(&page->lru, tmplist);
+
+ /* now try and add more pages onto the request */
+ expected_index = page->index + 1;
+ list_for_each_entry_safe_reverse(page, tpage, page_list, lru) {
+ /* discontinuity ? */
+ if (page->index != expected_index)
+ break;
+
+ /* would this page push the read over the rsize? */
+ if (*bytes + PAGE_CACHE_SIZE > rsize)
+ break;
+
+ __set_page_locked(page);
+ if (add_to_page_cache_locked(page, mapping, page->index,
+ GFP_KERNEL)) {
+ __clear_page_locked(page);
+ break;
+ }
+ list_move_tail(&page->lru, tmplist);
+ (*bytes) += PAGE_CACHE_SIZE;
+ expected_index++;
+ (*nr_pages)++;
+ }
+ return rc;
}
static int cifs_readpages(struct file *file, struct address_space *mapping,
struct list_head tmplist;
struct cifsFileInfo *open_file = file->private_data;
struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
- unsigned int rsize = cifs_sb->rsize;
+ struct TCP_Server_Info *server;
pid_t pid;
- /*
- * Give up immediately if rsize is too small to read an entire page.
- * The VFS will fall back to readpage. We should never reach this
- * point however since we set ra_pages to 0 when the rsize is smaller
- * than a cache page.
- */
- if (unlikely(rsize < PAGE_CACHE_SIZE))
- return 0;
-
/*
* Reads as many pages as possible from fscache. Returns -ENOBUFS
* immediately if the cookie is negative
pid = current->tgid;
rc = 0;
- INIT_LIST_HEAD(&tmplist);
+ server = tlink_tcon(open_file->tlink)->ses->server;
cifs_dbg(FYI, "%s: file=%p mapping=%p num_pages=%u\n",
__func__, file, mapping, num_pages);
* the rdata->pages, then we want them in increasing order.
*/
while (!list_empty(page_list)) {
- unsigned int i;
- unsigned int bytes = PAGE_CACHE_SIZE;
- unsigned int expected_index;
- unsigned int nr_pages = 1;
+ unsigned int i, nr_pages, bytes, rsize;
loff_t offset;
struct page *page, *tpage;
struct cifs_readdata *rdata;
+ unsigned credits;
- page = list_entry(page_list->prev, struct page, lru);
+ rc = server->ops->wait_mtu_credits(server, cifs_sb->rsize,
+ &rsize, &credits);
+ if (rc)
+ break;
/*
- * Lock the page and put it in the cache. Since no one else
- * should have access to this page, we're safe to simply set
- * PG_locked without checking it first.
+ * Give up immediately if rsize is too small to read an entire
+ * page. The VFS will fall back to readpage. We should never
+ * reach this point however since we set ra_pages to 0 when the
+ * rsize is smaller than a cache page.
*/
- __set_page_locked(page);
- rc = add_to_page_cache_locked(page, mapping,
- page->index, GFP_KERNEL);
+ if (unlikely(rsize < PAGE_CACHE_SIZE)) {
+ add_credits_and_wake_if(server, credits, 0);
+ return 0;
+ }
- /* give up if we can't stick it in the cache */
+ rc = readpages_get_pages(mapping, page_list, rsize, &tmplist,
+ &nr_pages, &offset, &bytes);
if (rc) {
- __clear_page_locked(page);
+ add_credits_and_wake_if(server, credits, 0);
break;
}
- /* move first page to the tmplist */
- offset = (loff_t)page->index << PAGE_CACHE_SHIFT;
- list_move_tail(&page->lru, &tmplist);
-
- /* now try and add more pages onto the request */
- expected_index = page->index + 1;
- list_for_each_entry_safe_reverse(page, tpage, page_list, lru) {
- /* discontinuity ? */
- if (page->index != expected_index)
- break;
-
- /* would this page push the read over the rsize? */
- if (bytes + PAGE_CACHE_SIZE > rsize)
- break;
-
- __set_page_locked(page);
- if (add_to_page_cache_locked(page, mapping,
- page->index, GFP_KERNEL)) {
- __clear_page_locked(page);
- break;
- }
- list_move_tail(&page->lru, &tmplist);
- bytes += PAGE_CACHE_SIZE;
- expected_index++;
- nr_pages++;
- }
-
rdata = cifs_readdata_alloc(nr_pages, cifs_readv_complete);
if (!rdata) {
/* best to give up if we're out of mem */
page_cache_release(page);
}
rc = -ENOMEM;
+ add_credits_and_wake_if(server, credits, 0);
break;
}
rdata->pid = pid;
rdata->pagesz = PAGE_CACHE_SIZE;
rdata->read_into_pages = cifs_readpages_read_into_pages;
+ rdata->credits = credits;
list_for_each_entry_safe(page, tpage, &tmplist, lru) {
list_del(&page->lru);
rdata->pages[rdata->nr_pages++] = page;
}
- rc = cifs_retry_async_readv(rdata);
- if (rc != 0) {
+ if (!rdata->cfile->invalidHandle ||
+ !cifs_reopen_file(rdata->cfile, true))
+ rc = server->ops->async_readv(rdata);
+ if (rc) {
+ 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);
unlock_page(page);
page_cache_release(page);
+ if (rc == -EAGAIN)
+ list_add_tail(&page->lru, &tmplist);
}
kref_put(&rdata->refcount, cifs_readdata_release);
+ if (rc == -EAGAIN) {
+ /* Re-add pages to the page_list and retry */
+ list_splice(&tmplist, page_list);
+ continue;
+ }
break;
}
return rc;
}
-static int
-cifs_pending_writers_wait(void *unused)
-{
- schedule();
- return 0;
-}
-
void cifs_oplock_break(struct work_struct *work)
{
struct cifsFileInfo *cfile = container_of(work, struct cifsFileInfo,
int rc = 0;
wait_on_bit(&cinode->flags, CIFS_INODE_PENDING_WRITERS,
- cifs_pending_writers_wait, TASK_UNINTERRUPTIBLE);
+ TASK_UNINTERRUPTIBLE);
server->ops->downgrade_oplock(server, cinode,
test_bit(CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2, &cinode->flags));
projects / firefly-linux-kernel-4.4.55.git / blobdiff