From: Ira Weiny ira.weiny@intel.com
The kmap() calls in this FS are localized to a single thread. To avoid the over head of global PKRS updates use the new kmap_thread() call.
Cc: Steve French sfrench@samba.org Signed-off-by: Ira Weiny ira.weiny@intel.com --- fs/cifs/cifsencrypt.c | 6 +++--- fs/cifs/file.c | 16 ++++++++-------- fs/cifs/smb2ops.c | 8 ++++---- 3 files changed, 15 insertions(+), 15 deletions(-)
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 9daa256f69d4..2f8232d01a56 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -82,17 +82,17 @@ int __cifs_calc_signature(struct smb_rqst *rqst,
rqst_page_get_length(rqst, i, &len, &offset);
- kaddr = (char *) kmap(rqst->rq_pages[i]) + offset; + kaddr = (char *) kmap_thread(rqst->rq_pages[i]) + offset;
rc = crypto_shash_update(shash, kaddr, len); if (rc) { cifs_dbg(VFS, "%s: Could not update with payload\n", __func__); - kunmap(rqst->rq_pages[i]); + kunmap_thread(rqst->rq_pages[i]); return rc; }
- kunmap(rqst->rq_pages[i]); + kunmap_thread(rqst->rq_pages[i]); }
rc = crypto_shash_final(shash, signature); diff --git a/fs/cifs/file.c b/fs/cifs/file.c index be46fab4c96d..6db2caab8852 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2145,17 +2145,17 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to) inode = page->mapping->host;
offset += (loff_t)from; - write_data = kmap(page); + write_data = kmap_thread(page); write_data += from;
if ((to > PAGE_SIZE) || (from > to)) { - kunmap(page); + kunmap_thread(page); return -EIO; }
/* racing with truncate? */ if (offset > mapping->host->i_size) { - kunmap(page); + kunmap_thread(page); return 0; /* don't care */ }
@@ -2183,7 +2183,7 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to) rc = -EIO; }
- kunmap(page); + kunmap_thread(page); return rc; }
@@ -2559,10 +2559,10 @@ static int cifs_write_end(struct file *file, struct address_space *mapping, known which we might as well leverage */ /* BB check if anything else missing out of ppw such as updating last write time */ - page_data = kmap(page); + page_data = kmap_thread(page); rc = cifs_write(cfile, pid, page_data + offset, copied, &pos); /* if (rc < 0) should we set writebehind rc? */ - kunmap(page); + kunmap_thread(page);
free_xid(xid); } else { @@ -4511,7 +4511,7 @@ static int cifs_readpage_worker(struct file *file, struct page *page, if (rc == 0) goto read_complete;
- read_data = kmap(page); + read_data = kmap_thread(page); /* for reads over a certain size could initiate async read ahead */
rc = cifs_read(file, read_data, PAGE_SIZE, poffset); @@ -4540,7 +4540,7 @@ static int cifs_readpage_worker(struct file *file, struct page *page, rc = 0;
io_error: - kunmap(page); + kunmap_thread(page); unlock_page(page);
read_complete: diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 32f90dc82c84..a3e7ebab38b6 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -4068,12 +4068,12 @@ smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
rqst_page_get_length(&new_rq[i], j, &len, &offset);
- dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset; - src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset; + dst = (char *) kmap_thread(new_rq[i].rq_pages[j]) + offset; + src = (char *) kmap_thread(old_rq[i - 1].rq_pages[j]) + offset;
memcpy(dst, src, len); - kunmap(new_rq[i].rq_pages[j]); - kunmap(old_rq[i - 1].rq_pages[j]); + kunmap_thread(new_rq[i].rq_pages[j]); + kunmap_thread(old_rq[i - 1].rq_pages[j]); } }