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-rw-r--r--fs/jbd2/journal.c128
1 files changed, 15 insertions, 113 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index f37324aee817..6ddc5531587c 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -84,7 +84,6 @@ EXPORT_SYMBOL(jbd2_journal_force_commit);
static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
static void __journal_abort_soft (journal_t *journal, int errno);
-static int jbd2_journal_create_jbd_slab(size_t slab_size);
/*
* Helper function used to manage commit timeouts
@@ -335,10 +334,10 @@ repeat:
char *tmp;
jbd_unlock_bh_state(bh_in);
- tmp = jbd2_slab_alloc(bh_in->b_size, GFP_NOFS);
+ tmp = jbd2_alloc(bh_in->b_size, GFP_NOFS);
jbd_lock_bh_state(bh_in);
if (jh_in->b_frozen_data) {
- jbd2_slab_free(tmp, bh_in->b_size);
+ jbd2_free(tmp, bh_in->b_size);
goto repeat;
}
@@ -655,10 +654,9 @@ static journal_t * journal_init_common (void)
journal_t *journal;
int err;
- journal = jbd_kmalloc(sizeof(*journal), GFP_KERNEL);
+ journal = kzalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
if (!journal)
goto fail;
- memset(journal, 0, sizeof(*journal));
init_waitqueue_head(&journal->j_wait_transaction_locked);
init_waitqueue_head(&journal->j_wait_logspace);
@@ -672,7 +670,7 @@ static journal_t * journal_init_common (void)
spin_lock_init(&journal->j_list_lock);
spin_lock_init(&journal->j_state_lock);
- journal->j_commit_interval = (HZ * JBD_DEFAULT_MAX_COMMIT_AGE);
+ journal->j_commit_interval = (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE);
/* The journal is marked for error until we succeed with recovery! */
journal->j_flags = JBD2_ABORT;
@@ -1096,13 +1094,6 @@ int jbd2_journal_load(journal_t *journal)
}
}
- /*
- * Create a slab for this blocksize
- */
- err = jbd2_journal_create_jbd_slab(be32_to_cpu(sb->s_blocksize));
- if (err)
- return err;
-
/* Let the recovery code check whether it needs to recover any
* data from the journal. */
if (jbd2_journal_recover(journal))
@@ -1621,89 +1612,9 @@ int jbd2_journal_blocks_per_page(struct inode *inode)
size_t journal_tag_bytes(journal_t *journal)
{
if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT))
- return JBD_TAG_SIZE64;
+ return JBD2_TAG_SIZE64;
else
- return JBD_TAG_SIZE32;
-}
-
-/*
- * Simple support for retrying memory allocations. Introduced to help to
- * debug different VM deadlock avoidance strategies.
- */
-void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry)
-{
- return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
-}
-
-/*
- * jbd slab management: create 1k, 2k, 4k, 8k slabs as needed
- * and allocate frozen and commit buffers from these slabs.
- *
- * Reason for doing this is to avoid, SLAB_DEBUG - since it could
- * cause bh to cross page boundary.
- */
-
-#define JBD_MAX_SLABS 5
-#define JBD_SLAB_INDEX(size) (size >> 11)
-
-static struct kmem_cache *jbd_slab[JBD_MAX_SLABS];
-static const char *jbd_slab_names[JBD_MAX_SLABS] = {
- "jbd2_1k", "jbd2_2k", "jbd2_4k", NULL, "jbd2_8k"
-};
-
-static void jbd2_journal_destroy_jbd_slabs(void)
-{
- int i;
-
- for (i = 0; i < JBD_MAX_SLABS; i++) {
- if (jbd_slab[i])
- kmem_cache_destroy(jbd_slab[i]);
- jbd_slab[i] = NULL;
- }
-}
-
-static int jbd2_journal_create_jbd_slab(size_t slab_size)
-{
- int i = JBD_SLAB_INDEX(slab_size);
-
- BUG_ON(i >= JBD_MAX_SLABS);
-
- /*
- * Check if we already have a slab created for this size
- */
- if (jbd_slab[i])
- return 0;
-
- /*
- * Create a slab and force alignment to be same as slabsize -
- * this will make sure that allocations won't cross the page
- * boundary.
- */
- jbd_slab[i] = kmem_cache_create(jbd_slab_names[i],
- slab_size, slab_size, 0, NULL);
- if (!jbd_slab[i]) {
- printk(KERN_EMERG "JBD: no memory for jbd_slab cache\n");
- return -ENOMEM;
- }
- return 0;
-}
-
-void * jbd2_slab_alloc(size_t size, gfp_t flags)
-{
- int idx;
-
- idx = JBD_SLAB_INDEX(size);
- BUG_ON(jbd_slab[idx] == NULL);
- return kmem_cache_alloc(jbd_slab[idx], flags | __GFP_NOFAIL);
-}
-
-void jbd2_slab_free(void *ptr, size_t size)
-{
- int idx;
-
- idx = JBD_SLAB_INDEX(size);
- BUG_ON(jbd_slab[idx] == NULL);
- kmem_cache_free(jbd_slab[idx], ptr);
+ return JBD2_TAG_SIZE32;
}
/*
@@ -1770,7 +1681,7 @@ static void journal_free_journal_head(struct journal_head *jh)
{
#ifdef CONFIG_JBD2_DEBUG
atomic_dec(&nr_journal_heads);
- memset(jh, JBD_POISON_FREE, sizeof(*jh));
+ memset(jh, JBD2_POISON_FREE, sizeof(*jh));
#endif
kmem_cache_free(jbd2_journal_head_cache, jh);
}
@@ -1893,13 +1804,13 @@ static void __journal_remove_journal_head(struct buffer_head *bh)
printk(KERN_WARNING "%s: freeing "
"b_frozen_data\n",
__FUNCTION__);
- jbd2_slab_free(jh->b_frozen_data, bh->b_size);
+ jbd2_free(jh->b_frozen_data, bh->b_size);
}
if (jh->b_committed_data) {
printk(KERN_WARNING "%s: freeing "
"b_committed_data\n",
__FUNCTION__);
- jbd2_slab_free(jh->b_committed_data, bh->b_size);
+ jbd2_free(jh->b_committed_data, bh->b_size);
}
bh->b_private = NULL;
jh->b_bh = NULL; /* debug, really */
@@ -1953,16 +1864,14 @@ void jbd2_journal_put_journal_head(struct journal_head *jh)
/*
* debugfs tunables
*/
-#if defined(CONFIG_JBD2_DEBUG)
-u8 jbd2_journal_enable_debug;
+#ifdef CONFIG_JBD2_DEBUG
+u8 jbd2_journal_enable_debug __read_mostly;
EXPORT_SYMBOL(jbd2_journal_enable_debug);
-#endif
-
-#if defined(CONFIG_JBD2_DEBUG) && defined(CONFIG_DEBUG_FS)
#define JBD2_DEBUG_NAME "jbd2-debug"
-struct dentry *jbd2_debugfs_dir, *jbd2_debug;
+static struct dentry *jbd2_debugfs_dir;
+static struct dentry *jbd2_debug;
static void __init jbd2_create_debugfs_entry(void)
{
@@ -1975,24 +1884,18 @@ static void __init jbd2_create_debugfs_entry(void)
static void __exit jbd2_remove_debugfs_entry(void)
{
- if (jbd2_debug)
- debugfs_remove(jbd2_debug);
- if (jbd2_debugfs_dir)
- debugfs_remove(jbd2_debugfs_dir);
+ debugfs_remove(jbd2_debug);
+ debugfs_remove(jbd2_debugfs_dir);
}
#else
static void __init jbd2_create_debugfs_entry(void)
{
- do {
- } while (0);
}
static void __exit jbd2_remove_debugfs_entry(void)
{
- do {
- } while (0);
}
#endif
@@ -2040,7 +1943,6 @@ static void jbd2_journal_destroy_caches(void)
jbd2_journal_destroy_revoke_caches();
jbd2_journal_destroy_jbd2_journal_head_cache();
jbd2_journal_destroy_handle_cache();
- jbd2_journal_destroy_jbd_slabs();
}
static int __init journal_init(void)
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-04 02:55:06 +0000