diff options
Diffstat (limited to 'fs/pipe.c')
| -rw-r--r-- | fs/pipe.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/pipe.c b/fs/pipe.c index ae17d026aaa..13c76a60802 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -22,6 +22,8 @@ #include <asm/uaccess.h> #include <asm/ioctls.h> +static struct kmem_cache *pipe_info_cache __read_mostly; + /* * We use a start+len construction, which provides full use of the * allocated memory. @@ -875,7 +877,7 @@ struct pipe_inode_info * alloc_pipe_info(struct inode *inode) { struct pipe_inode_info *pipe; - pipe = kzalloc(sizeof(struct pipe_inode_info), GFP_KERNEL); + pipe = kmem_cache_zalloc(pipe_info_cache, GFP_KERNEL); if (pipe) { init_waitqueue_head(&pipe->wait); pipe->r_counter = pipe->w_counter = 1; @@ -896,7 +898,8 @@ void __free_pipe_info(struct pipe_inode_info *pipe) } if (pipe->tmp_page) __free_page(pipe->tmp_page); - kfree(pipe); + + kmem_cache_free(pipe_info_cache, pipe); } void free_pipe_info(struct inode *inode) @@ -1146,6 +1149,10 @@ static int __init init_pipe_fs(void) unregister_filesystem(&pipe_fs_type); } } + if (!err) { + pipe_info_cache = KMEM_CACHE(pipe_inode_info, SLAB_PANIC); + printk(KERN_INFO "%s: pipe_inode_cache initialized\n", __FUNCTION__); + } return err; } |