diff options
| author | Pavel Shilovsky <pshilovsky@samba.org> | 2014-07-10 11:31:53 +0400 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2014-07-14 23:20:20 -0500 |
| commit | 6e12da5830d61246dcb7bdd45593926e49c8b3f8 (patch) | |
| tree | a66c18e84955b67c0a1a34b17ac93e9219bdfad5 /fs/cifs | |
| parent | 33a36e8999b8965df1ca3dfad00857ddd4858a04 (diff) | |
CIFS: Optimize readpages in a short read case on reconnects
by marking pages with a data from a partially received response up-to-date.
This is suitable for non-signed connections.
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/file.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index e42d26dd4b62..4b83d726b86e 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -3280,25 +3280,30 @@ int cifs_file_mmap(struct file *file, struct vm_area_struct *vma) 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; } |