diff options
| -rw-r--r-- | fs/ceph/buffer.c | 23 | ||||
| -rw-r--r-- | fs/ceph/buffer.h | 20 | ||||
| -rw-r--r-- | fs/ceph/inode.c | 11 | ||||
| -rw-r--r-- | fs/ceph/messenger.c | 2 | ||||
| -rw-r--r-- | fs/ceph/xattr.c | 8 |
5 files changed, 35 insertions, 29 deletions
diff --git a/fs/ceph/buffer.c b/fs/ceph/buffer.c index 847c5da..2576bd4 100644 --- a/fs/ceph/buffer.c +++ b/fs/ceph/buffer.c @@ -2,23 +2,38 @@ #include "ceph_debug.h" #include "buffer.h" -struct ceph_buffer *ceph_buffer_new(gfp_t gfp) +struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp) { struct ceph_buffer *b; b = kmalloc(sizeof(*b), gfp); if (!b) return NULL; + + b->vec.iov_base = kmalloc(len, gfp | __GFP_NOWARN); + if (b->vec.iov_base) { + b->is_vmalloc = false; + } else { + b->vec.iov_base = __vmalloc(len, gfp, PAGE_KERNEL); + if (!b->vec.iov_base) { + kfree(b); + return NULL; + } + b->is_vmalloc = true; + } + kref_init(&b->kref); - b->vec.iov_base = NULL; - b->vec.iov_len = 0; - b->alloc_len = 0; + b->alloc_len = len; + b->vec.iov_len = len; + dout("buffer_new %p\n", b); return b; } void ceph_buffer_release(struct kref *kref) { struct ceph_buffer *b = container_of(kref, struct ceph_buffer, kref); + + dout("buffer_release %p\n", b); if (b->vec.iov_base) { if (b->is_vmalloc) vfree(b->vec.iov_base); diff --git a/fs/ceph/buffer.h b/fs/ceph/buffer.h index 3f541a1..47b9514 100644 --- a/fs/ceph/buffer.h +++ b/fs/ceph/buffer.h @@ -20,8 +20,8 @@ struct ceph_buffer { bool is_vmalloc; }; -struct ceph_buffer *ceph_buffer_new(gfp_t gfp); -int ceph_buffer_alloc(struct ceph_buffer *b, int len, gfp_t gfp); +extern struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp); +extern void ceph_buffer_release(struct kref *kref); static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b) { @@ -29,23 +29,9 @@ static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b) return b; } -void ceph_buffer_release(struct kref *kref); - static inline void ceph_buffer_put(struct ceph_buffer *b) { - if (b) - kref_put(&b->kref, ceph_buffer_release); -} - -static inline struct ceph_buffer *ceph_buffer_new_alloc(int len, gfp_t gfp) -{ - struct ceph_buffer *b = ceph_buffer_new(gfp); - - if (b && ceph_buffer_alloc(b, len, gfp) < 0) { - ceph_buffer_put(b); - b = NULL; - } - return b; + kref_put(&b->kref, ceph_buffer_release); } #endif diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 074ee42..db68468 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -383,8 +383,10 @@ void ceph_destroy_inode(struct inode *inode) } __ceph_destroy_xattrs(ci); - ceph_buffer_put(ci->i_xattrs.blob); - ceph_buffer_put(ci->i_xattrs.prealloc_blob); + if (ci->i_xattrs.blob) + ceph_buffer_put(ci->i_xattrs.blob); + if (ci->i_xattrs.prealloc_blob) + ceph_buffer_put(ci->i_xattrs.prealloc_blob); kmem_cache_free(ceph_inode_cachep, ci); } @@ -526,7 +528,7 @@ static int fill_inode(struct inode *inode, * bytes are the xattr count). */ if (iinfo->xattr_len > 4) { - xattr_blob = ceph_buffer_new_alloc(iinfo->xattr_len, GFP_NOFS); + xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); if (!xattr_blob) pr_err("fill_inode ENOMEM xattr blob %d bytes\n", iinfo->xattr_len); @@ -715,7 +717,8 @@ no_change: err = 0; out: - ceph_buffer_put(xattr_blob); + if (xattr_blob) + ceph_buffer_put(xattr_blob); return err; } diff --git a/fs/ceph/messenger.c b/fs/ceph/messenger.c index 45cec31..bf76210 100644 --- a/fs/ceph/messenger.c +++ b/fs/ceph/messenger.c @@ -2047,7 +2047,7 @@ int ceph_alloc_middle(struct ceph_connection *con, struct ceph_msg *msg) BUG_ON(!middle_len); BUG_ON(msg->middle); - msg->middle = ceph_buffer_new_alloc(middle_len, GFP_NOFS); + msg->middle = ceph_buffer_new(middle_len, GFP_NOFS); if (!msg->middle) return -ENOMEM; return 0; diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index 04769a3..37d6ce6 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -482,7 +482,8 @@ void __ceph_build_xattrs_blob(struct ceph_inode_info *ci) ci->i_xattrs.prealloc_blob->vec.iov_len = dest - ci->i_xattrs.prealloc_blob->vec.iov_base; - ceph_buffer_put(ci->i_xattrs.blob); + if (ci->i_xattrs.blob) + ceph_buffer_put(ci->i_xattrs.blob); ci->i_xattrs.blob = ci->i_xattrs.prealloc_blob; ci->i_xattrs.prealloc_blob = NULL; ci->i_xattrs.dirty = false; @@ -745,11 +746,12 @@ retry: spin_unlock(&inode->i_lock); dout(" preaallocating new blob size=%d\n", required_blob_size); - blob = ceph_buffer_new_alloc(required_blob_size, GFP_NOFS); + blob = ceph_buffer_new(required_blob_size, GFP_NOFS); if (!blob) goto out; spin_lock(&inode->i_lock); - ceph_buffer_put(ci->i_xattrs.prealloc_blob); + if (ci->i_xattrs.prealloc_blob) + ceph_buffer_put(ci->i_xattrs.prealloc_blob); ci->i_xattrs.prealloc_blob = blob; goto retry; } |