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SubjectRe: [PATCH 3/3] fuse: pass gfp flags to fuse_request_alloc
On Wed, Aug 21, 2019 at 5:10 PM Khazhismel Kumykov <khazhy@google.com> wrote:
>
> Instead of having a helper per flag
>
> Signed-off-by: Khazhismel Kumykov <khazhy@google.com>

I think it would be better to re-order the patch 2 and 3 of this
series. There will be less code churn.

> ---
> fs/fuse/dev.c | 22 +++-------------------
> fs/fuse/file.c | 6 +++---
> fs/fuse/fuse_i.h | 6 +-----
> fs/fuse/inode.c | 4 ++--
> 4 files changed, 9 insertions(+), 29 deletions(-)
>
> diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
> index a0d166a6596f..c957620ce7ba 100644
> --- a/fs/fuse/dev.c
> +++ b/fs/fuse/dev.c
> @@ -66,7 +66,7 @@ static struct page **fuse_req_pages_alloc(unsigned int npages, gfp_t flags,
> return pages;
> }
>
> -static struct fuse_req *__fuse_request_alloc(unsigned npages, gfp_t flags)
> +struct fuse_req *fuse_request_alloc(unsigned int npages, gfp_t flags)
> {
> struct fuse_req *req = kmem_cache_zalloc(fuse_req_cachep, flags);
> if (req) {
> @@ -90,24 +90,8 @@ static struct fuse_req *__fuse_request_alloc(unsigned npages, gfp_t flags)
> }
> return req;
> }
> -
> -struct fuse_req *fuse_request_alloc(unsigned npages)
> -{
> - return __fuse_request_alloc(npages, GFP_KERNEL);
> -}
> EXPORT_SYMBOL_GPL(fuse_request_alloc);
>
> -struct fuse_req *fuse_request_alloc_account(unsigned int npages)
> -{
> - return __fuse_request_alloc(npages, GFP_KERNEL_ACCOUNT);
> -}
> -EXPORT_SYMBOL_GPL(fuse_request_alloc_account);
> -
> -struct fuse_req *fuse_request_alloc_nofs(unsigned npages)
> -{
> - return __fuse_request_alloc(npages, GFP_NOFS);
> -}
> -
> static void fuse_req_pages_free(struct fuse_req *req)
> {
> if (req->pages != req->inline_pages)
> @@ -207,7 +191,7 @@ static struct fuse_req *__fuse_get_req(struct fuse_conn *fc, unsigned npages,
> if (fc->conn_error)
> goto out;
>
> - req = fuse_request_alloc(npages);
> + req = fuse_request_alloc(npages, GFP_KERNEL);
> err = -ENOMEM;
> if (!req) {
> if (for_background)
> @@ -316,7 +300,7 @@ struct fuse_req *fuse_get_req_nofail_nopages(struct fuse_conn *fc,
> wait_event(fc->blocked_waitq, fc->initialized);
> /* Matches smp_wmb() in fuse_set_initialized() */
> smp_rmb();
> - req = fuse_request_alloc(0);
> + req = fuse_request_alloc(0, GFP_KERNEL);
> if (!req)
> req = get_reserved_req(fc, file);
>
> diff --git a/fs/fuse/file.c b/fs/fuse/file.c
> index c584ad7478b3..ae8c8016bb8e 100644
> --- a/fs/fuse/file.c
> +++ b/fs/fuse/file.c
> @@ -50,7 +50,7 @@ struct fuse_file *fuse_file_alloc(struct fuse_conn *fc)
> return NULL;
>
> ff->fc = fc;
> - ff->reserved_req = fuse_request_alloc_account(0);
> + ff->reserved_req = fuse_request_alloc(0, GFP_KERNEL_ACCOUNT);
> if (unlikely(!ff->reserved_req)) {
> kfree(ff);
> return NULL;
> @@ -1703,7 +1703,7 @@ static int fuse_writepage_locked(struct page *page)
>
> set_page_writeback(page);
>
> - req = fuse_request_alloc_nofs(1);
> + req = fuse_request_alloc(1, GFP_NOFS);
> if (!req)
> goto err;
>
> @@ -1923,7 +1923,7 @@ static int fuse_writepages_fill(struct page *page,
> struct fuse_inode *fi = get_fuse_inode(inode);
>
> err = -ENOMEM;
> - req = fuse_request_alloc_nofs(FUSE_REQ_INLINE_PAGES);
> + req = fuse_request_alloc(FUSE_REQ_INLINE_PAGES, GFP_NOFS);
> if (!req) {
> __free_page(tmp_page);
> goto out_unlock;
> diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
> index 08161b2d9b08..8080a51096e9 100644
> --- a/fs/fuse/fuse_i.h
> +++ b/fs/fuse/fuse_i.h
> @@ -902,11 +902,7 @@ void __exit fuse_ctl_cleanup(void);
> /**
> * Allocate a request
> */
> -struct fuse_req *fuse_request_alloc(unsigned npages);
> -
> -struct fuse_req *fuse_request_alloc_account(unsigned int npages);
> -
> -struct fuse_req *fuse_request_alloc_nofs(unsigned npages);
> +struct fuse_req *fuse_request_alloc(unsigned int npages, gfp_t flags);
>
> bool fuse_req_realloc_pages(struct fuse_conn *fc, struct fuse_req *req,
> gfp_t flags);
> diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
> index eab44ddc68b9..ad92e93eaddd 100644
> --- a/fs/fuse/inode.c
> +++ b/fs/fuse/inode.c
> @@ -1178,13 +1178,13 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
> /* Root dentry doesn't have .d_revalidate */
> sb->s_d_op = &fuse_dentry_operations;
>
> - init_req = fuse_request_alloc(0);
> + init_req = fuse_request_alloc(0, GFP_KERNEL);
> if (!init_req)
> goto err_put_root;
> __set_bit(FR_BACKGROUND, &init_req->flags);
>
> if (is_bdev) {
> - fc->destroy_req = fuse_request_alloc(0);
> + fc->destroy_req = fuse_request_alloc(0, GFP_KERNEL);
> if (!fc->destroy_req)
> goto err_free_init_req;
> }
> --
> 2.23.0.187.g17f5b7556c-goog
>

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