diff options
Diffstat (limited to 'fs/netfs/fscache_volume.c')
| -rw-r--r-- | fs/netfs/fscache_volume.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/fs/netfs/fscache_volume.c b/fs/netfs/fscache_volume.c index cdf991bdd9..2e2a405ca9 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) { @@ -251,7 +264,7 @@ static struct fscache_volume *fscache_alloc_volume(const char *volume_key, fscache_see_volume(volume, fscache_volume_new_acquire); fscache_stat(&fscache_n_volumes); up_write(&fscache_addremove_sem); - _leave(" = v=%x", volume->debug_id); + kleave(" = v=%x", volume->debug_id); return volume; err_vol: @@ -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. @@ -452,7 +466,7 @@ void fscache_withdraw_volume(struct fscache_volume *volume) { int n_accesses; - _debug("withdraw V=%x", volume->debug_id); + kdebug("withdraw V=%x", volume->debug_id); /* Allow wakeups on dec-to-0 */ n_accesses = atomic_dec_return(&volume->n_accesses); |