From: Trond Myklebust <trondmy@gmail.com>
To: linux-nfs@vger.kernel.org
Subject: [PATCH 06/19] pnfs: move allocations out of nfs4_proc_layoutget
Date: Wed, 30 May 2018 14:05:40 -0400 [thread overview]
Message-ID: <20180530180553.38769-7-trond.myklebust@hammerspace.com> (raw)
In-Reply-To: <20180530180553.38769-6-trond.myklebust@hammerspace.com>
From: Fred Isaman <fred.isaman@gmail.com>
They work better in the new alloc_init function.
Signed-off-by: Fred Isaman <fred.isaman@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
fs/nfs/nfs4proc.c | 15 +++------------
fs/nfs/pnfs.c | 12 +++++++++++-
fs/nfs/pnfs.h | 4 +++-
3 files changed, 17 insertions(+), 14 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 830569a8d00a..0eaab13dff04 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -8694,7 +8694,7 @@ nfs4_layoutget_handle_exception(struct rpc_task *task,
return status;
}
-static size_t max_response_pages(struct nfs_server *server)
+size_t max_response_pages(struct nfs_server *server)
{
u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
return nfs_page_array_len(0, max_resp_sz);
@@ -8715,7 +8715,7 @@ static void nfs4_free_pages(struct page **pages, size_t size)
kfree(pages);
}
-static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)
+struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)
{
struct page **pages;
int i;
@@ -8761,11 +8761,10 @@ static const struct rpc_call_ops nfs4_layoutget_call_ops = {
};
struct pnfs_layout_segment *
-nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags)
+nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout)
{
struct inode *inode = lgp->args.inode;
struct nfs_server *server = NFS_SERVER(inode);
- size_t max_pages = max_response_pages(server);
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
@@ -8792,14 +8791,6 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags)
/* nfs4_layoutget_release calls pnfs_put_layout_hdr */
pnfs_get_layout_hdr(NFS_I(inode)->layout);
- lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags);
- if (!lgp->args.layout.pages) {
- nfs4_layoutget_release(lgp);
- return ERR_PTR(-ENOMEM);
- }
- lgp->args.layout.pglen = max_pages * PAGE_SIZE;
-
- lgp->res.layoutp = &lgp->args.layout;
nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0, 0);
task = rpc_run_task(&task_setup_data);
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 2c955c389ecf..363420d0f3a0 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -924,6 +924,7 @@ pnfs_alloc_init_layoutget_args(struct pnfs_layout_hdr *lo,
{
struct inode *ino = lo->plh_inode;
struct nfs_server *server = NFS_SERVER(ino);
+ size_t max_pages = max_response_pages(server);
struct nfs4_layoutget *lgp;
loff_t i_size;
@@ -933,6 +934,15 @@ pnfs_alloc_init_layoutget_args(struct pnfs_layout_hdr *lo,
if (lgp == NULL)
return NULL;
+ lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags);
+ if (!lgp->args.layout.pages) {
+ kfree(lgp);
+ return NULL;
+ }
+ lgp->args.layout.pglen = max_pages * PAGE_SIZE;
+ lgp->res.layoutp = &lgp->args.layout;
+
+
i_size = i_size_read(ino);
lgp->args.minlength = PAGE_SIZE;
@@ -1835,7 +1845,7 @@ pnfs_update_layout(struct inode *ino,
goto out_put_layout_hdr;
}
- lseg = nfs4_proc_layoutget(lgp, &timeout, gfp_flags);
+ lseg = nfs4_proc_layoutget(lgp, &timeout);
trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg,
PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET);
atomic_dec(&lo->plh_outstanding);
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index f71a55f11b97..964a7227ea97 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -224,10 +224,12 @@ extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *);
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);
-extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags);
+extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout);
extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync);
/* pnfs.c */
--
2.17.0
next prev parent reply other threads:[~2018-05-30 18:06 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-30 18:05 [PATCH 00/19] Layoutget on OPEN Trond Myklebust
2018-05-30 18:05 ` [PATCH 01/19] pnfs: Remove redundant assignment from nfs4_proc_layoutget() Trond Myklebust
2018-05-30 18:05 ` [PATCH 02/19] pnfs: Store return value of decode_layoutget for later processing Trond Myklebust
2018-05-30 18:05 ` [PATCH 03/19] NFS4: move ctx into nfs4_run_open_task Trond Myklebust
2018-05-30 18:05 ` [PATCH 04/19] pnfs: Add layout driver flag PNFS_LAYOUTGET_ON_OPEN Trond Myklebust
2018-05-30 18:05 ` [PATCH 05/19] pnfs: refactor send_layoutget Trond Myklebust
2018-05-30 18:05 ` Trond Myklebust [this message]
2018-05-30 18:05 ` [PATCH 07/19] pnfs: Add conditional encode/decode of LAYOUTGET within OPEN compound Trond Myklebust
2018-05-30 18:05 ` [PATCH 08/19] pnfs: Move nfs4_opendata into nfs4_fs.h Trond Myklebust
2018-05-30 18:05 ` [PATCH 09/19] pnfs: Change pnfs_alloc_init_layoutget_args call signature Trond Myklebust
2018-05-30 18:05 ` [PATCH 10/19] pnfs: Add LAYOUTGET to OPEN of a new file Trond Myklebust
2018-05-30 18:05 ` [PATCH 11/19] pnfs: Add LAYOUTGET to OPEN of an existing file Trond Myklebust
2018-05-30 18:05 ` [PATCH 12/19] pnfs: Stop attempting LAYOUTGET on OPEN on failure Trond Myklebust
2018-05-30 18:05 ` [PATCH 13/19] pnfs: Add barrier to prevent lgopen using LAYOUTGET during recall Trond Myklebust
2018-05-30 18:05 ` [PATCH 14/19] pnfs: Fix manipulation of NFS_LAYOUT_FIRST_LAYOUTGET Trond Myklebust
2018-05-30 18:05 ` [PATCH 15/19] NFSv4/pnfs: Ensure pnfs_parse_lgopen() won't try to parse uninitialised data Trond Myklebust
2018-05-30 18:05 ` [PATCH 16/19] NFSv4/pnfs: Don't switch off layoutget-on-open for transient errors Trond Myklebust
2018-05-30 18:05 ` [PATCH 17/19] pNFS: Don't send LAYOUTGET on OPEN for read, if we already have cached data Trond Myklebust
2018-05-30 18:05 ` [PATCH 18/19] pnfs: Don't call commit on failed layoutget-on-open Trond Myklebust
2018-05-30 18:05 ` [PATCH 19/19] pnfs: Don't release the sequence slot until we've processed layoutget on open Trond Myklebust
2018-05-30 20:10 ` [PATCH 04/19] pnfs: Add layout driver flag PNFS_LAYOUTGET_ON_OPEN Olga Kornievskaia
2018-05-31 12:40 ` Trond Myklebust
2019-09-06 20:17 ` Olga Kornievskaia
2018-05-30 18:25 ` [PATCH 00/19] Layoutget on OPEN Olga Kornievskaia
2018-05-30 18:36 ` Trond Myklebust
2018-05-30 18:37 ` Olga Kornievskaia
2018-05-30 19:27 ` Olga Kornievskaia
2018-05-30 19:29 ` Olga Kornievskaia
2018-05-30 19:47 ` Olga Kornievskaia
2018-05-30 22:33 ` Trond Myklebust
2018-05-31 18:59 ` J. Bruce Fields
2018-06-01 0:28 ` Trond Myklebust
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