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Commit 29a8bfe5 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

pNFS: Refactor nfs4_layoutget_release() 



Move the actual freeing of the struct nfs4_layoutget into fs/nfs/pnfs.c
where it can be reused by the layoutget on open code.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
parent 2409a976

fs/nfs/nfs4proc.c

+1 −46
Original line number Diff line number Diff line
@@ -8692,58 +8692,13 @@ size_t max_response_pages(struct nfs_server *server) 
	return nfs_page_array_len(0, max_resp_sz);

}



static void nfs4_free_pages(struct page **pages, size_t size)

{

	int i;



	if (!pages)

		return;



	for (i = 0; i < size; i++) {

		if (!pages[i])

			break;

		__free_page(pages[i]);

	}

	kfree(pages);

}



struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)

{

	struct page **pages;

	int i;



	pages = kcalloc(size, sizeof(struct page *), gfp_flags);

	if (!pages) {

		dprintk("%s: can't alloc array of %zu pages\n", __func__, size);

		return NULL;

	}



	for (i = 0; i < size; i++) {

		pages[i] = alloc_page(gfp_flags);

		if (!pages[i]) {

			dprintk("%s: failed to allocate page\n", __func__);

			nfs4_free_pages(pages, size);

			return NULL;

		}

	}



	return pages;

}



static void nfs4_layoutget_release(void *calldata)

{

	struct nfs4_layoutget *lgp = calldata;

	struct inode *inode = lgp->args.inode;

	size_t max_pages = lgp->args.layout.pglen / PAGE_SIZE;



	dprintk("--> %s\n", __func__);

	nfs4_sequence_free_slot(&lgp->res.seq_res);

	nfs4_free_pages(lgp->args.layout.pages, max_pages);

	if (inode)

		pnfs_put_layout_hdr(NFS_I(inode)->layout);

	put_rpccred(lgp->cred);

	put_nfs_open_context(lgp->args.ctx);

	kfree(calldata);

	pnfs_layoutget_free(lgp);

	dprintk("<-- %s\n", __func__);

}

fs/nfs/pnfs.c

+50 −0
Original line number Diff line number Diff line
@@ -931,6 +931,44 @@ pnfs_find_server(struct inode *inode, struct nfs_open_context *ctx) 
	return server;

}



static void nfs4_free_pages(struct page **pages, size_t size)

{

	int i;



	if (!pages)

		return;



	for (i = 0; i < size; i++) {

		if (!pages[i])

			break;

		__free_page(pages[i]);

	}

	kfree(pages);

}



static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)

{

	struct page **pages;

	int i;



	pages = kcalloc(size, sizeof(struct page *), gfp_flags);

	if (!pages) {

		dprintk("%s: can't alloc array of %zu pages\n", __func__, size);

		return NULL;

	}



	for (i = 0; i < size; i++) {

		pages[i] = alloc_page(gfp_flags);

		if (!pages[i]) {

			dprintk("%s: failed to allocate page\n", __func__);

			nfs4_free_pages(pages, size);

			return NULL;

		}

	}



	return pages;

}



static struct nfs4_layoutget *

pnfs_alloc_init_layoutget_args(struct inode *ino,

	   struct nfs_open_context *ctx,
@@ -982,6 +1020,18 @@ pnfs_alloc_init_layoutget_args(struct inode *ino, 
	return lgp;

}



void pnfs_layoutget_free(struct nfs4_layoutget *lgp)

{

	size_t max_pages = lgp->args.layout.pglen / PAGE_SIZE;



	nfs4_free_pages(lgp->args.layout.pages, max_pages);

	if (lgp->args.inode)

		pnfs_put_layout_hdr(NFS_I(lgp->args.inode)->layout);

	put_rpccred(lgp->cred);

	put_nfs_open_context(lgp->args.ctx);

	kfree(lgp);

}



static void pnfs_clear_layoutcommit(struct inode *inode,

		struct list_head *head)

{

fs/nfs/pnfs.h

+1 −1
Original line number Diff line number Diff line
@@ -227,7 +227,6 @@ extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); 


/* nfs4proc.c */

extern size_t max_response_pages(struct nfs_server *server);

extern struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags);

extern int nfs4_proc_getdeviceinfo(struct nfs_server *server,

				   struct pnfs_device *dev,

				   struct rpc_cred *cred);
@@ -251,6 +250,7 @@ size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, 
			    struct nfs_page *prev, struct nfs_page *req);

void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg);

struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp);

void pnfs_layoutget_free(struct nfs4_layoutget *lgp);

void pnfs_free_lseg_list(struct list_head *tmp_list);

void pnfs_destroy_layout(struct nfs_inode *);

void pnfs_destroy_all_layouts(struct nfs_client *);