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authorDavid Howells <dhowells@redhat.com>2021-12-17 19:14:15 +0300
committerIlya Dryomov <idryomov@gmail.com>2022-03-01 20:26:36 +0300
commit5b19f1eba45902bc75b92e9962374fc98a40e174 (patch)
treef257c314b7f1016903b913f11c19b9af25d1340b /fs/ceph
parenta25cedb4313d35e1f2968105678a47ca28e84d3b (diff)
downloadlinux-5b19f1eba45902bc75b92e9962374fc98a40e174.tar.xz
ceph: make ceph_netfs_issue_op() handle inlined data
Make ceph_netfs_issue_op() handle inlined data on page 0. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/addr.c77
1 files changed, 60 insertions, 17 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index d3969fb11c59..a58b851eca4a 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -245,6 +245,59 @@ static void finish_netfs_read(struct ceph_osd_request *req)
iput(req->r_inode);
}
+static bool ceph_netfs_issue_op_inline(struct netfs_read_subrequest *subreq)
+{
+ struct netfs_read_request *rreq = subreq->rreq;
+ struct inode *inode = rreq->inode;
+ struct ceph_mds_reply_info_parsed *rinfo;
+ struct ceph_mds_reply_info_in *iinfo;
+ struct ceph_mds_request *req;
+ struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb);
+ struct ceph_inode_info *ci = ceph_inode(inode);
+ struct iov_iter iter;
+ ssize_t err = 0;
+ size_t len;
+
+ __set_bit(NETFS_SREQ_CLEAR_TAIL, &subreq->flags);
+ __clear_bit(NETFS_SREQ_WRITE_TO_CACHE, &subreq->flags);
+
+ if (subreq->start >= inode->i_size)
+ goto out;
+
+ /* We need to fetch the inline data. */
+ req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS);
+ if (IS_ERR(req)) {
+ err = PTR_ERR(req);
+ goto out;
+ }
+ req->r_ino1 = ci->i_vino;
+ req->r_args.getattr.mask = cpu_to_le32(CEPH_STAT_CAP_INLINE_DATA);
+ req->r_num_caps = 2;
+
+ err = ceph_mdsc_do_request(mdsc, NULL, req);
+ if (err < 0)
+ goto out;
+
+ rinfo = &req->r_reply_info;
+ iinfo = &rinfo->targeti;
+ if (iinfo->inline_version == CEPH_INLINE_NONE) {
+ /* The data got uninlined */
+ ceph_mdsc_put_request(req);
+ return false;
+ }
+
+ len = min_t(size_t, iinfo->inline_len - subreq->start, subreq->len);
+ iov_iter_xarray(&iter, READ, &rreq->mapping->i_pages, subreq->start, len);
+ err = copy_to_iter(iinfo->inline_data + subreq->start, len, &iter);
+ if (err == 0)
+ err = -EFAULT;
+
+ ceph_mdsc_put_request(req);
+out:
+ netfs_subreq_terminated(subreq, err, false);
+ return true;
+}
+
static void ceph_netfs_issue_op(struct netfs_read_subrequest *subreq)
{
struct netfs_read_request *rreq = subreq->rreq;
@@ -259,6 +312,10 @@ static void ceph_netfs_issue_op(struct netfs_read_subrequest *subreq)
int err = 0;
u64 len = subreq->len;
+ if (ci->i_inline_version != CEPH_INLINE_NONE &&
+ ceph_netfs_issue_op_inline(subreq))
+ return;
+
req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout, vino, subreq->start, &len,
0, 1, CEPH_OSD_OP_READ,
CEPH_OSD_FLAG_READ | fsc->client->osdc.client->options->read_from_replica,
@@ -327,23 +384,9 @@ static int ceph_readpage(struct file *file, struct page *subpage)
size_t len = folio_size(folio);
u64 off = folio_file_pos(folio);
- if (ci->i_inline_version != CEPH_INLINE_NONE) {
- /*
- * Uptodate inline data should have been added
- * into page cache while getting Fcr caps.
- */
- if (off == 0) {
- folio_unlock(folio);
- return -EINVAL;
- }
- zero_user_segment(&folio->page, 0, folio_size(folio));
- folio_mark_uptodate(folio);
- folio_unlock(folio);
- return 0;
- }
-
- dout("readpage ino %llx.%llx file %p off %llu len %zu folio %p index %lu\n",
- vino.ino, vino.snap, file, off, len, folio, folio_index(folio));
+ dout("readpage ino %llx.%llx file %p off %llu len %zu folio %p index %lu\n inline %d",
+ vino.ino, vino.snap, file, off, len, folio, folio_index(folio),
+ ci->i_inline_version != CEPH_INLINE_NONE);
return netfs_readpage(file, folio, &ceph_netfs_read_ops, NULL);
}