From 949eb95d5bcc530e6ce74cc95897c1849c53ea89 Mon Sep 17 00:00:00 2001 From: Gao Xiang Date: Wed, 12 Aug 2026 15:15:27 +0100 Subject: cachefiles,netfs: sunset ondemand mode It was an effort to enhance fscache as a kernel cache for lazy pulling (at least according to previous Incremental FS discussion [1]) and EROFS over fscache was the in-tree user of this mode. fscache has since evolved to be netfslib-oriented, serving network filesystem inodes via the netfs library, but EROFS never acts as a network filesystem and we need to cache golden filesystem images rather than individual EROFS inodes. Since EROFS over fscache is now removed, clean up netfs/fscache/ cachefiles upstream too. [1] https://lore.kernel.org/r/CAOQ4uxi4dzxArY24YO=+kBCK2gGoq3Ptb8WkzCqSogPgU_R3dQ@mail.gmail.com [dh] Fixed up comments on: https://sashiko.dev/#/patchset/20260716103030.3065561-1-dhowells%40redhat.com https://sashiko.dev/#/patchset/20260722130218.78958-1-dhowells%40redhat.com Signed-off-by: Gao Xiang Signed-off-by: David Howells Link: https://patch.msgid.link/1046393.1786544127@warthog.procyon.org.uk cc: Paulo Alcantara cc: netfs@lists.linux.dev cc: linux-erofs@lists.ozlabs.org cc: bpf@vger.kernel.org cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner (Amutable) --- include/linux/netfs.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfs.h b/include/linux/netfs.h index d0b62d53eea9..f837a501008c 100644 --- a/include/linux/netfs.h +++ b/include/linux/netfs.h @@ -191,7 +191,6 @@ struct netfs_io_subrequest { #define NETFS_SREQ_COPY_TO_CACHE 0 /* Set if should copy the data to the cache */ #define NETFS_SREQ_CLEAR_TAIL 1 /* Set if the rest of the read should be cleared */ #define NETFS_SREQ_MADE_PROGRESS 4 /* Set if we transferred at least some data */ -#define NETFS_SREQ_ONDEMAND 5 /* Set if it's from on-demand read mode */ #define NETFS_SREQ_BOUNDARY 6 /* Set if ends on hard boundary (eg. ceph object) */ #define NETFS_SREQ_HIT_EOF 7 /* Set if short due to EOF */ #define NETFS_SREQ_IN_PROGRESS 8 /* Unlocked when the subrequest completes */ @@ -374,14 +373,6 @@ struct netfs_cache_ops { loff_t *_start, size_t *_len, size_t upper_len, loff_t i_size, bool no_space_allocated_yet); - /* Prepare an on-demand read operation, shortening it to a cached/uncached - * boundary as appropriate. - */ - enum netfs_io_source (*prepare_ondemand_read)(struct netfs_cache_resources *cres, - loff_t start, size_t *_len, - loff_t i_size, - unsigned long *_flags, ino_t ino); - /* Query the occupancy of the cache in a region, returning where the * next chunk of data starts and how long it is. */ -- cgit v1.2.3