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authorJeff Layton <jlayton@redhat.com>2012-03-23 22:40:56 +0400
committerJeff Layton <jlayton@redhat.com>2012-03-23 22:40:56 +0400
commite9492871fb0546f1b73f309d9e8c0f030bfdfdca (patch)
treebe69a497fddd74de6b2f6ed18f525907a6dadab4 /fs/cifs/cifssmb.c
parenta7103b99e4cc00b9d40f6bad77389f9e2341820a (diff)
downloadlinux-e9492871fb0546f1b73f309d9e8c0f030bfdfdca.tar.xz
cifs: abstract out function to marshal up the iovec array for async writes
We'll need to do something a bit different depending on the caller. Abstract the code that marshals the page array into an iovec. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
Diffstat (limited to 'fs/cifs/cifssmb.c')
-rw-r--r--fs/cifs/cifssmb.c17
1 files changed, 7 insertions, 10 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 21ff4bff6c89..5ec0b90b0444 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -2142,7 +2142,6 @@ cifs_async_writev(struct cifs_writedata *wdata)
WRITE_REQ *smb = NULL;
int wct;
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
- struct inode *inode = wdata->cfile->dentry->d_inode;
struct kvec *iov = NULL;
if (tcon->ses->capabilities & CAP_LARGE_FILES) {
@@ -2185,15 +2184,13 @@ cifs_async_writev(struct cifs_writedata *wdata)
iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1;
iov[0].iov_base = smb;
- /* marshal up the pages into iov array */
- wdata->bytes = 0;
- for (i = 0; i < wdata->nr_pages; i++) {
- iov[i + 1].iov_len = min(inode->i_size -
- page_offset(wdata->pages[i]),
- (loff_t)PAGE_CACHE_SIZE);
- iov[i + 1].iov_base = kmap(wdata->pages[i]);
- wdata->bytes += iov[i + 1].iov_len;
- }
+ /*
+ * This function should marshal up the page array into the kvec
+ * array, reserving [0] for the header. It should kmap the pages
+ * and set the iov_len properly for each one. It may also set
+ * wdata->bytes too.
+ */
+ wdata->marshal_iov(iov, wdata);
cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes);