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| author | David Howells <dhowells@redhat.com> | 2021-11-17 19:22:21 +0300 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2022-01-07 16:42:08 +0300 |
| commit | df98e87f2091774c377ddfaedfe64bd90ed4bdca (patch) | |
| tree | 626bfd7ea0af245966ca301cc7b1c1f28c38f9de /fs/cachefiles/main.c | |
| parent | 13871bad1ef7f41947c816a9e342aa9fa8643c5e (diff) | |
| download | linux-df98e87f2091774c377ddfaedfe64bd90ed4bdca.tar.xz | |
cachefiles: Implement object lifecycle funcs
Implement allocate, get, see and put functions for the cachefiles_object
struct. The members of the struct we're going to need are also added.
Additionally, implement a lifecycle tracepoint.
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/163819639457.215744.4600093239395728232.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/163906939569.143852.3594314410666551982.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163967148857.1823006.6332962598220464364.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/164021547762.640689.8422781599594931000.stgit@warthog.procyon.org.uk/ # v4
Diffstat (limited to 'fs/cachefiles/main.c')
| -rw-r--r-- | fs/cachefiles/main.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/cachefiles/main.c b/fs/cachefiles/main.c index 533e3067d80f..3f369c6f816d 100644 --- a/fs/cachefiles/main.c +++ b/fs/cachefiles/main.c @@ -31,6 +31,8 @@ MODULE_DESCRIPTION("Mounted-filesystem based cache"); MODULE_AUTHOR("Red Hat, Inc."); MODULE_LICENSE("GPL"); +struct kmem_cache *cachefiles_object_jar; + static struct miscdevice cachefiles_dev = { .minor = MISC_DYNAMIC_MINOR, .name = "cachefiles", @@ -51,9 +53,22 @@ static int __init cachefiles_init(void) if (ret < 0) goto error_dev; + /* create an object jar */ + ret = -ENOMEM; + cachefiles_object_jar = + kmem_cache_create("cachefiles_object_jar", + sizeof(struct cachefiles_object), + 0, SLAB_HWCACHE_ALIGN, NULL); + if (!cachefiles_object_jar) { + pr_notice("Failed to allocate an object jar\n"); + goto error_object_jar; + } + pr_info("Loaded\n"); return 0; +error_object_jar: + misc_deregister(&cachefiles_dev); error_dev: cachefiles_unregister_error_injection(); error_einj: @@ -70,6 +85,7 @@ static void __exit cachefiles_exit(void) { pr_info("Unloading\n"); + kmem_cache_destroy(cachefiles_object_jar); misc_deregister(&cachefiles_dev); cachefiles_unregister_error_injection(); } |