hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

jbd2: tidy up revoke cache initialisation and destruction 

Make revocation cache destruction safe to call if initialisation fails
partially or entirely.  This allows it to be used to cleanup in the case of
initialisation failure, simplifying the code slightly.

Signed-off-by: Duane Griffin <duaneg@dghda.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
This commit is contained in:
Duane Griffin 2008-04-28 09:40:00 -04:00 committed by Theodore Ts'o
parent 418f6e9e5b
commit 9fa27c85de
1 changed files with 22 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
fs/jbd2/revoke.c
View File

@ -167,33 +167,41 @@ static struct jbd2_revoke_record_s *find_revoke_record(journal_t *journal,
return NULL;
}
void jbd2_journal_destroy_revoke_caches(void)
{
if (jbd2_revoke_record_cache) {
kmem_cache_destroy(jbd2_revoke_record_cache);
jbd2_revoke_record_cache = NULL;
}
if (jbd2_revoke_table_cache) {
kmem_cache_destroy(jbd2_revoke_table_cache);
jbd2_revoke_table_cache = NULL;
}
}
int __init jbd2_journal_init_revoke_caches(void)
{
J_ASSERT(!jbd2_revoke_record_cache);
J_ASSERT(!jbd2_revoke_table_cache);
jbd2_revoke_record_cache = kmem_cache_create("jbd2_revoke_record",
sizeof(struct jbd2_revoke_record_s),
0,
SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY,
NULL);
if (!jbd2_revoke_record_cache)
return -ENOMEM;
goto record_cache_failure;
jbd2_revoke_table_cache = kmem_cache_create("jbd2_revoke_table",
sizeof(struct jbd2_revoke_table_s),
0, SLAB_TEMPORARY, NULL);
if (!jbd2_revoke_table_cache) {
kmem_cache_destroy(jbd2_revoke_record_cache);
jbd2_revoke_record_cache = NULL;
return -ENOMEM;
}
if (!jbd2_revoke_table_cache)
goto table_cache_failure;
return 0;
}
void jbd2_journal_destroy_revoke_caches(void)
{
kmem_cache_destroy(jbd2_revoke_record_cache);
jbd2_revoke_record_cache = NULL;
kmem_cache_destroy(jbd2_revoke_table_cache);
jbd2_revoke_table_cache = NULL;
table_cache_failure:
jbd2_journal_destroy_revoke_caches();
record_cache_failure:
return -ENOMEM;
}
/* Initialise the revoke table for a given journal to a given size. */