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netfs: Rearrange netfs_io_subrequest to put request pointer first

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Rearrange the netfs_io_subrequest struct to put the netfs_io_request
pointer (rreq) first.  This then allows netfs_io_subrequest to be put in a
union with a pointer to a wrapper around netfs_io_request.  This will be
useful in the future for cifs and maybe ceph.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
This commit is contained in:
David Howells 2023-10-13 12:26:31 +01:00
parent 252cf7b2ea
commit 040a82be54
1 changed files with 1 additions and 1 deletions
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2
include/linux/netfs.h
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@ -204,8 +204,8 @@ struct netfs_cache_resources {
* the pages it points to can be relied on to exist for the duration.
*/
struct netfs_io_subrequest {
struct work_struct work;
struct netfs_io_request *rreq; /* Supervising I/O request */
struct work_struct work;
struct list_head rreq_link; /* Link in rreq->subrequests */
struct iov_iter io_iter; /* Iterator for this subrequest */
loff_t start; /* Where to start the I/O */