Add an rsize parameter to netfs_io_request to be filled in by the network
filesystem when the request is initialised. This indicates the maximum
size of a read request that the netfs will honour in that region.
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: Jeff Layton <jlayton@xxxxxxxxxx>
cc: linux-cachefs@xxxxxxxxxx
cc: linux-fsdevel@xxxxxxxxxxxxxxx
cc: linux-mm@xxxxxxxxx
---
fs/afs/file.c | 1 +
fs/ceph/addr.c | 2 ++
include/linux/netfs.h | 1 +
3 files changed, 4 insertions(+)
diff --git a/fs/afs/file.c b/fs/afs/file.c
index 3fea5cd8ef13..3d2e1913ea27 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -360,6 +360,7 @@ static int afs_symlink_read_folio(struct file *file, struct folio *folio)
static int afs_init_request(struct netfs_io_request *rreq, struct file *file)
{
rreq->netfs_priv = key_get(afs_file_key(file));
+ rreq->rsize = 4 * 1024 * 1024;
return 0;
}
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index ced19ff08988..92a5ddcd9a76 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -419,6 +419,8 @@ static int ceph_init_request(struct netfs_io_request *rreq, struct file *file)
struct ceph_netfs_request_data *priv;
int ret = 0;
+ rreq->rsize = 1024 * 1024;
+
if (rreq->origin != NETFS_READAHEAD)
return 0;
diff --git a/include/linux/netfs.h b/include/linux/netfs.h
index daa431c4148d..02e888c170da 100644
--- a/include/linux/netfs.h
+++ b/include/linux/netfs.h
@@ -188,6 +188,7 @@ struct netfs_io_request {
struct list_head subrequests; /* Contributory I/O operations */
void *netfs_priv; /* Private data for the netfs */
unsigned int debug_id;
+ unsigned int rsize; /* Maximum read size (0 for none) */
atomic_t nr_outstanding; /* Number of ops in progress */
atomic_t nr_copy_ops; /* Number of copy-to-cache ops in progress */
size_t submitted; /* Amount submitted for I/O so far */
--
Linux-cachefs mailing list
Linux-cachefs@xxxxxxxxxx
https://listman.redhat.com/mailman/listinfo/linux-cachefs
