David Howells 80f94f29f6 cachefiles: Provide a function to check how much space there is ... Provide a function to check how much space there is. This also flips the state on the cache and will signal the daemon to inform it of the change and to ask it to do some culling if necessary. We will also need to subtract the amount of data currently being written to the cache (cache->b_writing) from the amount of available space to avoid hitting ENOSPC accidentally. 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/163819629322.215744.13457425294680841213.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/163906930100.143852.1681026700865762069.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967140058.1823006.7781243664702837128.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021539957.640689.12477177372616805706.stgit@warthog.procyon.org.uk/ # v4		2022-01-07 13:41:26 +00:00
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cache.c	cachefiles: Provide a function to check how much space there is	2022-01-07 13:41:26 +00:00
daemon.c	cachefiles: Provide a function to check how much space there is	2022-01-07 13:41:26 +00:00
error_inject.c	cachefiles: Add some error injection support	2022-01-07 13:40:56 +00:00
internal.h	cachefiles: Provide a function to check how much space there is	2022-01-07 13:41:26 +00:00
Kconfig	cachefiles: Add some error injection support	2022-01-07 13:40:56 +00:00
main.c	cachefiles: Register a miscdev and parse commands over it	2022-01-07 13:41:20 +00:00
Makefile	cachefiles: Provide a function to check how much space there is	2022-01-07 13:41:26 +00:00
security.c	cachefiles: Add security derivation	2022-01-07 13:41:14 +00:00