diff options
| author | David Howells <dhowells@redhat.com> | 2021-10-21 08:59:46 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2022-01-07 13:41:26 +0000 |
| commit | 80f94f29f677d32a1edabc055acfe91c00803592 (patch) | |
| tree | 23e578a123ba44c3564fbb66b5f94f4f0454f4e4 /fs/cachefiles/daemon.c | |
| parent | 8667d434b2a993b34a9dae6f6673bf93870fac25 (diff) | |
| download | linux-80f94f29f677d32a1edabc055acfe91c00803592.tar.bz2 | |
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
Diffstat (limited to 'fs/cachefiles/daemon.c')
| -rw-r--r-- | fs/cachefiles/daemon.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c index 4cfb7c8b37d0..7d4691614cec 100644 --- a/fs/cachefiles/daemon.c +++ b/fs/cachefiles/daemon.c @@ -167,7 +167,7 @@ static ssize_t cachefiles_daemon_read(struct file *file, char __user *_buffer, return 0; /* check how much space the cache has */ - // PLACEHOLDER: Check space + cachefiles_has_space(cache, 0, 0); /* summarise */ f_released = atomic_xchg(&cache->f_released, 0); |