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ceph: fold ceph_sync_writepages into writepage_nounlock

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Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Jeff Layton 2020-07-14 14:37:15 -04:00 committed by Ilya Dryomov
parent 9b4862ecae
commit 6390987f2f
1 changed files with 35 additions and 58 deletions
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93
fs/ceph/addr.c
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@ -591,50 +591,6 @@ static u64 get_writepages_data_length(struct inode *inode,
return end > start ? end - start : 0;
}
/*
* do a synchronous write on N pages
*/
static int ceph_sync_writepages(struct ceph_fs_client *fsc,
struct ceph_vino vino,
struct ceph_file_layout *layout,
struct ceph_snap_context *snapc,
u64 off, u64 len,
u32 truncate_seq, u64 truncate_size,
struct timespec64 *mtime,
struct page **pages, int num_pages)
{
struct ceph_osd_client *osdc = &fsc->client->osdc;
struct ceph_osd_request *req;
int rc = 0;
int page_align = off & ~PAGE_MASK;
req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1,
CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE,
snapc, truncate_seq, truncate_size,
true);
if (IS_ERR(req))
return PTR_ERR(req);
/* it may be a short write due to an object boundary */
osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align,
false, false);
dout("writepages %llu~%llu (%llu bytes)\n", off, len, len);
req->r_mtime = *mtime;
rc = ceph_osdc_start_request(osdc, req, true);
if (!rc)
rc = ceph_osdc_wait_request(osdc, req);
ceph_update_write_latency(&fsc->mdsc->metric, req->r_start_latency,
req->r_end_latency, rc);
ceph_osdc_put_request(req);
if (rc == 0)
rc = len;
dout("writepages result %d\n", rc);
return rc;
}
/*
* Write a single page, but leave the page locked.
*
@ -643,20 +599,19 @@ static int ceph_sync_writepages(struct ceph_fs_client *fsc,
*/
static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
{
struct inode *inode;
struct ceph_inode_info *ci;
struct ceph_fs_client *fsc;
struct inode *inode = page->mapping->host;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
struct ceph_snap_context *snapc, *oldest;
loff_t page_off = page_offset(page);
int err, len = PAGE_SIZE;
int err;
loff_t len = PAGE_SIZE;
struct ceph_writeback_ctl ceph_wbc;
struct ceph_osd_client *osdc = &fsc->client->osdc;
struct ceph_osd_request *req;
dout("writepage %p idx %lu\n", page, page->index);
inode = page->mapping->host;
ci = ceph_inode(inode);
fsc = ceph_inode_to_client(inode);
/* verify this is a writeable snap context */
snapc = page_snap_context(page);
if (!snapc) {
@ -685,7 +640,7 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
if (ceph_wbc.i_size < page_off + len)
len = ceph_wbc.i_size - page_off;
dout("writepage %p page %p index %lu on %llu~%u snapc %p seq %lld\n",
dout("writepage %p page %p index %lu on %llu~%llu snapc %p seq %lld\n",
inode, page, page->index, page_off, len, snapc, snapc->seq);
if (atomic_long_inc_return(&fsc->writeback_count) >
@ -693,11 +648,33 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
set_bdi_congested(inode_to_bdi(inode), BLK_RW_ASYNC);
set_page_writeback(page);
err = ceph_sync_writepages(fsc, ceph_vino(inode),
&ci->i_layout, snapc, page_off, len,
ceph_wbc.truncate_seq,
ceph_wbc.truncate_size,
&inode->i_mtime, &page, 1);
req = ceph_osdc_new_request(osdc, &ci->i_layout, ceph_vino(inode), page_off, &len, 0, 1,
CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, snapc,
ceph_wbc.truncate_seq, ceph_wbc.truncate_size,
true);
if (IS_ERR(req)) {
redirty_page_for_writepage(wbc, page);
end_page_writeback(page);
return PTR_ERR(req);
}
/* it may be a short write due to an object boundary */
WARN_ON_ONCE(len > PAGE_SIZE);
osd_req_op_extent_osd_data_pages(req, 0, &page, len, 0, false, false);
dout("writepage %llu~%llu (%llu bytes)\n", page_off, len, len);
req->r_mtime = inode->i_mtime;
err = ceph_osdc_start_request(osdc, req, true);
if (!err)
err = ceph_osdc_wait_request(osdc, req);
ceph_update_write_latency(&fsc->mdsc->metric, req->r_start_latency,
req->r_end_latency, err);
ceph_osdc_put_request(req);
if (err == 0)
err = len;
if (err < 0) {
struct writeback_control tmp_wbc;
if (!wbc)