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Subject[PATCH 16/19] orangefs: use kmem_cache for orangefs_write_request
Date
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
---
fs/orangefs/inode.c | 10 +++++-----
fs/orangefs/orangefs-cache.c | 24 ++++++++++++++++++++++--
fs/orangefs/orangefs-kernel.h | 6 ++++--
fs/orangefs/orangefs-mod.c | 10 +++++-----
4 files changed, 36 insertions(+), 14 deletions(-)

diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c
index 5c155b259b13..f53d768acdd9 100644
--- a/fs/orangefs/inode.c
+++ b/fs/orangefs/inode.c
@@ -66,7 +66,7 @@ static int orangefs_writepage_locked(struct page *page,
ret = 0;
if (wr) {
ClearPagePrivate(page);
- kfree(wr);
+ wr_release(wr);
}
}
end_page_writeback(page);
@@ -126,7 +126,7 @@ static int update_wr(struct page *page, loff_t pos, unsigned len, int mwrite)
else
wr->len = wr->pos + wr->len - wr->pos;
} else {
- wr = kmalloc(sizeof *wr, GFP_KERNEL);
+ wr = wr_alloc();
if (wr) {
wr->pos = pos;
wr->len = len;
@@ -272,7 +272,7 @@ static void orangefs_invalidatepage(struct page *page,
/* XXX prove */
if (offset == 0 && length == PAGE_SIZE) {
ClearPagePrivate(page);
- kfree(wr);
+ wr_release(wr);
} else if (wr->pos - page_offset(page) < offset &&
wr->pos - page_offset(page) + wr->len > offset + length) {
wbc.range_start = page_file_offset(page);
@@ -284,7 +284,7 @@ static void orangefs_invalidatepage(struct page *page,
return;
} else {
ClearPagePrivate(page);
- kfree(wr);
+ wr_release(wr);
}
} else if (wr->pos - page_offset(page) < offset &&
wr->pos - page_offset(page) + wr->len <= offset + length) {
@@ -299,7 +299,7 @@ static void orangefs_invalidatepage(struct page *page,
* entire write range is to be invalidated.
*/
ClearPagePrivate(page);
- kfree(wr);
+ wr_release(wr);
}
}
return;
diff --git a/fs/orangefs/orangefs-cache.c b/fs/orangefs/orangefs-cache.c
index 3b6982bf6bcf..cfb405ca8aa5 100644
--- a/fs/orangefs/orangefs-cache.c
+++ b/fs/orangefs/orangefs-cache.c
@@ -16,8 +16,9 @@ static DEFINE_SPINLOCK(next_tag_value_lock);

/* a cache for orangefs upcall/downcall operations */
static struct kmem_cache *op_cache;
+static struct kmem_cache *wr_cache;

-int op_cache_initialize(void)
+int orangefs_caches_initialize(void)
{
op_cache = kmem_cache_create("orangefs_op_cache",
sizeof(struct orangefs_kernel_op_s),
@@ -34,12 +35,21 @@ int op_cache_initialize(void)
spin_lock(&next_tag_value_lock);
next_tag_value = 100;
spin_unlock(&next_tag_value_lock);
+
+ wr_cache = kmem_cache_create("orangefs_wr_cache",
+ sizeof(struct orangefs_write_request), 0, ORANGEFS_CACHE_CREATE_FLAGS, NULL);
+ if (!wr_cache) {
+ gossip_err("Cannot create orangefs_wr_cache\n");
+ return -ENOMEM;
+ }
+
return 0;
}

-int op_cache_finalize(void)
+int orangefs_caches_finalize(void)
{
kmem_cache_destroy(op_cache);
+ kmem_cache_destroy(wr_cache);
return 0;
}

@@ -162,3 +172,13 @@ void op_release(struct orangefs_kernel_op_s *orangefs_op)
gossip_err("NULL pointer in op_release\n");
}
}
+
+struct orangefs_write_request *wr_alloc(void)
+{
+ return kmem_cache_zalloc(wr_cache, GFP_KERNEL);
+}
+
+void wr_release(struct orangefs_write_request *wr)
+{
+ kmem_cache_free(wr_cache, wr);
+}
diff --git a/fs/orangefs/orangefs-kernel.h b/fs/orangefs/orangefs-kernel.h
index 2e9726d1de7d..256851bab7a5 100644
--- a/fs/orangefs/orangefs-kernel.h
+++ b/fs/orangefs/orangefs-kernel.h
@@ -311,11 +311,13 @@ static inline int match_handle(struct orangefs_khandle resp_handle,
/*
* defined in orangefs-cache.c
*/
-int op_cache_initialize(void);
-int op_cache_finalize(void);
+int orangefs_caches_initialize(void);
+int orangefs_caches_finalize(void);
struct orangefs_kernel_op_s *op_alloc(__s32 type);
void orangefs_new_tag(struct orangefs_kernel_op_s *op);
char *get_opname_string(struct orangefs_kernel_op_s *new_op);
+struct orangefs_write_request *wr_alloc(void);
+void wr_release(struct orangefs_write_request *);

int orangefs_inode_cache_initialize(void);
int orangefs_inode_cache_finalize(void);
diff --git a/fs/orangefs/orangefs-mod.c b/fs/orangefs/orangefs-mod.c
index 85ef87245a87..c7373e682653 100644
--- a/fs/orangefs/orangefs-mod.c
+++ b/fs/orangefs/orangefs-mod.c
@@ -87,13 +87,13 @@ static int __init orangefs_init(void)
slot_timeout_secs = 0;

/* initialize global book keeping data structures */
- ret = op_cache_initialize();
+ ret = orangefs_caches_initialize();
if (ret < 0)
goto out;

ret = orangefs_inode_cache_initialize();
if (ret < 0)
- goto cleanup_op;
+ goto cleanup_caches;

orangefs_htable_ops_in_progress =
kcalloc(hash_table_size, sizeof(struct list_head), GFP_KERNEL);
@@ -172,8 +172,8 @@ static int __init orangefs_init(void)
cleanup_inode:
orangefs_inode_cache_finalize();

-cleanup_op:
- op_cache_finalize();
+cleanup_caches:
+ orangefs_caches_finalize();

out:
return ret;
@@ -194,7 +194,7 @@ static void __exit orangefs_exit(void)
BUG_ON(!list_empty(&orangefs_htable_ops_in_progress[i]));

orangefs_inode_cache_finalize();
- op_cache_finalize();
+ orangefs_caches_finalize();

kfree(orangefs_htable_ops_in_progress);

--
2.19.0
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