diff options
| author | David Howells <dhowells@redhat.com> | 2023-09-22 14:25:22 +0200 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2023-12-28 10:45:18 +0100 |
| commit | 7d828a06634799aba0fa392913c7fe2953eb64a6 (patch) | |
| tree | 5fa6cc75c11007bf13f9178b0602dad3480d9948 /include | |
| parent | netfs: Add support for DIO buffering (diff) | |
| download | linux-7d828a06634799aba0fa392913c7fe2953eb64a6.tar.xz linux-7d828a06634799aba0fa392913c7fe2953eb64a6.zip | |
netfs: Provide tools to create a buffer in an xarray
Provide tools to create a buffer in an xarray, with a function to add new
folios with a mark. This will be used to create bounce buffer and can be
used more easily to create a list of folios the span of which would require
more than a page's worth of bio_vec structs.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/netfs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/netfs.h b/include/linux/netfs.h index 2bb1273b38f4..c05365e3f428 100644 --- a/include/linux/netfs.h +++ b/include/linux/netfs.h @@ -109,6 +109,10 @@ static inline int wait_on_page_fscache_killable(struct page *page) return folio_wait_private_2_killable(page_folio(page)); } +/* Marks used on xarray-based buffers */ +#define NETFS_BUF_PUT_MARK XA_MARK_0 /* - Page needs putting */ +#define NETFS_BUF_PAGECACHE_MARK XA_MARK_1 /* - Page needs wb/dirty flag wrangling */ + enum netfs_io_source { NETFS_FILL_WITH_ZEROES, NETFS_DOWNLOAD_FROM_SERVER, |