summaryrefslogtreecommitdiff
path: root/fs/ceph/addr.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ceph/addr.c')
-rw-r--r--fs/ceph/addr.c69
1 files changed, 41 insertions, 28 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 9189257476f8..4aeccafa5dda 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -354,6 +354,45 @@ out:
dout("%s: result %d\n", __func__, err);
}
+static int ceph_init_request(struct netfs_io_request *rreq, struct file *file)
+{
+ struct inode *inode = rreq->inode;
+ int got = 0, want = CEPH_CAP_FILE_CACHE;
+ int ret = 0;
+
+ if (rreq->origin != NETFS_READAHEAD)
+ return 0;
+
+ if (file) {
+ struct ceph_rw_context *rw_ctx;
+ struct ceph_file_info *fi = file->private_data;
+
+ rw_ctx = ceph_find_rw_context(fi);
+ if (rw_ctx)
+ return 0;
+ }
+
+ /*
+ * readahead callers do not necessarily hold Fcb caps
+ * (e.g. fadvise, madvise).
+ */
+ ret = ceph_try_get_caps(inode, CEPH_CAP_FILE_RD, want, true, &got);
+ if (ret < 0) {
+ dout("start_read %p, error getting cap\n", inode);
+ return ret;
+ }
+
+ if (!(got & want)) {
+ dout("start_read %p, no cache cap\n", inode);
+ return -EACCES;
+ }
+ if (ret == 0)
+ return -EACCES;
+
+ rreq->netfs_priv = (void *)(uintptr_t)got;
+ return 0;
+}
+
static void ceph_readahead_cleanup(struct address_space *mapping, void *priv)
{
struct inode *inode = mapping->host;
@@ -365,7 +404,7 @@ static void ceph_readahead_cleanup(struct address_space *mapping, void *priv)
}
static const struct netfs_request_ops ceph_netfs_read_ops = {
- .is_cache_enabled = ceph_is_cache_enabled,
+ .init_request = ceph_init_request,
.begin_cache_operation = ceph_begin_cache_operation,
.issue_read = ceph_netfs_issue_read,
.expand_readahead = ceph_netfs_expand_readahead,
@@ -393,33 +432,7 @@ static int ceph_readpage(struct file *file, struct page *subpage)
static void ceph_readahead(struct readahead_control *ractl)
{
- struct inode *inode = file_inode(ractl->file);
- struct ceph_file_info *fi = ractl->file->private_data;
- struct ceph_rw_context *rw_ctx;
- int got = 0;
- int ret = 0;
-
- if (ceph_inode(inode)->i_inline_version != CEPH_INLINE_NONE)
- return;
-
- rw_ctx = ceph_find_rw_context(fi);
- if (!rw_ctx) {
- /*
- * readahead callers do not necessarily hold Fcb caps
- * (e.g. fadvise, madvise).
- */
- int want = CEPH_CAP_FILE_CACHE;
-
- ret = ceph_try_get_caps(inode, CEPH_CAP_FILE_RD, want, true, &got);
- if (ret < 0)
- dout("start_read %p, error getting cap\n", inode);
- else if (!(got & want))
- dout("start_read %p, no cache cap\n", inode);
-
- if (ret <= 0)
- return;
- }
- netfs_readahead(ractl, &ceph_netfs_read_ops, (void *)(uintptr_t)got);
+ netfs_readahead(ractl, &ceph_netfs_read_ops, NULL);
}
#ifdef CONFIG_CEPH_FSCACHE