linux-kernel - [PATCH 3/3] fuse: pass gfp flags to fuse_request

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Date:   Wed, 21 Aug 2019 17:09:33 -0700
From:   Khazhismel Kumykov <khazhy@...gle.com>
To:     miklos@...redi.hu
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        shakeelb@...gle.com, Khazhismel Kumykov <khazhy@...gle.com>
Subject: [PATCH 3/3] fuse: pass gfp flags to fuse_request_alloc

Instead of having a helper per flag

Signed-off-by: Khazhismel Kumykov <khazhy@...gle.com>
---
 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