David Howells 3a11b3a863 netfs: Pass more information on how to deal with a hole in the cache ... Pass more information to the cache on how to deal with a hole if it encounters one when trying to read from the cache. Three options are provided: (1) NETFS_READ_HOLE_IGNORE. Read the hole along with the data, assuming it to be a punched-out extent by the backing filesystem. (2) NETFS_READ_HOLE_CLEAR. If there's a hole, erase the requested region of the cache and clear the read buffer. (3) NETFS_READ_HOLE_FAIL. Fail the read if a hole is detected. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/163819612321.215744.9738308885948264476.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/163906914460.143852.6284247083607910189.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967119923.1823006.15637375885194297582.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021519762.640689.16994364383313159319.stgit@warthog.procyon.org.uk/ # v4		2022-01-07 09:22:19 +00:00
..
internal.h	netfs: Add write_begin helper	2021-04-23 10:14:32 +01:00
Kconfig	netfs: Make CONFIG_NETFS_SUPPORT auto-selected rather than manual	2021-05-25 13:48:04 +01:00
Makefile	netfs: Gather stats	2021-04-23 10:14:32 +01:00
read_helper.c	netfs: Pass more information on how to deal with a hole in the cache	2022-01-07 09:22:19 +00:00
stats.c	netfs: Add write_begin helper	2021-04-23 10:14:32 +01:00