diff options
| author | Baokun Li <libaokun1@huawei.com> | 2024-06-28 14:29:22 +0800 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-07-03 10:36:14 +0200 |
| commit | 85b08b31a22b481ec6528130daf94eee4452e23f (patch) | |
| tree | f914c86f3a4048a8a323c499e895a1906c640ef0 /fs/netfs/fscache_volume.c | |
| parent | 163eae0fb0d4c610c59a8de38040f8e12f89fd43 (diff) | |
netfs, fscache: export fscache_put_volume() and add fscache_try_get_volume()
Export fscache_put_volume() and add fscache_try_get_volume()
helper function to allow cachefiles to get/put fscache_volume
via linux/fscache-cache.h.
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Link: https://lore.kernel.org/r/20240628062930.2467993-2-libaokun@huaweicloud.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/netfs/fscache_volume.c')
| -rw-r--r-- | fs/netfs/fscache_volume.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/netfs/fscache_volume.c b/fs/netfs/fscache_volume.c index fbdc428aaea9..2e2a405ca9b0 100644 --- a/fs/netfs/fscache_volume.c +++ b/fs/netfs/fscache_volume.c @@ -27,6 +27,19 @@ struct fscache_volume *fscache_get_volume(struct fscache_volume *volume, return volume; } +struct fscache_volume *fscache_try_get_volume(struct fscache_volume *volume, + enum fscache_volume_trace where) +{ + int ref; + + if (!__refcount_inc_not_zero(&volume->ref, &ref)) + return NULL; + + trace_fscache_volume(volume->debug_id, ref + 1, where); + return volume; +} +EXPORT_SYMBOL(fscache_try_get_volume); + static void fscache_see_volume(struct fscache_volume *volume, enum fscache_volume_trace where) { @@ -420,6 +433,7 @@ void fscache_put_volume(struct fscache_volume *volume, fscache_free_volume(volume); } } +EXPORT_SYMBOL(fscache_put_volume); /* * Relinquish a volume representation cookie. |