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pNFS: Refactor nfs4_layoutget_release()

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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: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust
2018-05-30 17:16:20 -04:00
parent 2409a976a2
commit 29a8bfe52d
3 changed files with 52 additions and 47 deletions
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50
fs/nfs/pnfs.c
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@@ -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)
{