From: trondmy@kernel.org
To: linux-nfs@vger.kernel.org
Subject: [PATCH 20/22] pNFS/flexfiles: Check the layout segment range before doing I/O
Date: Tue, 24 Mar 2020 19:47:26 -0400 [thread overview]
Message-ID: <20200324234728.8997-21-trondmy@kernel.org> (raw)
In-Reply-To: <20200324234728.8997-20-trondmy@kernel.org>
From: Trond Myklebust <trond.myklebust@hammerspace.com>
When starting to read or write with a layout segment, check that the
range matches our request.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
fs/nfs/flexfilelayout/flexfilelayout.c | 12 ++++++++++--
fs/nfs/pnfs.c | 3 ++-
fs/nfs/pnfs.h | 1 +
3 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 3cc2d3165a11..a816e304e876 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -830,6 +830,14 @@ ff_layout_pg_get_read(struct nfs_pageio_descriptor *pgio,
}
}
+static void
+ff_layout_pg_check_layout(struct nfs_pageio_descriptor *pgio,
+ struct nfs_page *req)
+{
+ pnfs_generic_pg_check_layout(pgio);
+ pnfs_generic_pg_check_range(pgio, req);
+}
+
static void
ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req)
@@ -840,7 +848,7 @@ ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,
int ds_idx;
retry:
- pnfs_generic_pg_check_layout(pgio);
+ ff_layout_pg_check_layout(pgio, req);
/* Use full layout for now */
if (!pgio->pg_lseg) {
ff_layout_pg_get_read(pgio, req, false);
@@ -900,7 +908,7 @@ ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio,
int i;
retry:
- pnfs_generic_pg_check_layout(pgio);
+ ff_layout_pg_check_layout(pgio, req);
if (!pgio->pg_lseg) {
pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
nfs_req_openctx(req),
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index eba18f137fb0..6fcf26b16816 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -2611,7 +2611,7 @@ EXPORT_SYMBOL_GPL(pnfs_generic_pg_check_layout);
* Check for any intersection between the request and the pgio->pg_lseg,
* and if none, put this pgio->pg_lseg away.
*/
-static void
+void
pnfs_generic_pg_check_range(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
{
if (pgio->pg_lseg && !pnfs_lseg_request_intersecting(pgio->pg_lseg, req)) {
@@ -2619,6 +2619,7 @@ pnfs_generic_pg_check_range(struct nfs_pageio_descriptor *pgio, struct nfs_page
pgio->pg_lseg = NULL;
}
}
+EXPORT_SYMBOL_GPL(pnfs_generic_pg_check_range);
void
pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 52a5d8aaaf46..ff2a0c53e05f 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -252,6 +252,7 @@ void pnfs_put_lseg(struct pnfs_layout_segment *lseg);
void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, struct nfs_fsinfo *);
void unset_pnfs_layoutdriver(struct nfs_server *);
void pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio);
+void pnfs_generic_pg_check_range(struct nfs_pageio_descriptor *pgio, struct nfs_page *req);
void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *);
int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc);
void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,
--
2.25.1
next prev parent reply other threads:[~2020-03-24 23:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-24 23:47 [PATCH 00/22] Fix NFS commit to DS trondmy
2020-03-24 23:47 ` [PATCH 01/22] pNFS/flexfiles: Simplify allocation of the mirror array trondmy
2020-03-24 23:47 ` [PATCH 02/22] NFS/pNFS: Refactor pnfs_generic_commit_pagelist() trondmy
2020-03-24 23:47 ` [PATCH 03/22] pNFS: Add a helper to allocate the array of buckets trondmy
2020-03-24 23:47 ` [PATCH 04/22] NFSv4/pnfs: Support a list of commit arrays in struct pnfs_ds_commit_info trondmy
2020-03-24 23:47 ` [PATCH 05/22] NFSv4/pNFS: Scan the full list of commit arrays when committing trondmy
2020-03-24 23:47 ` [PATCH 06/22] pNFS: Support per-layout segment commits in pnfs_generic_recover_commit_reqs() trondmy
2020-03-24 23:47 ` [PATCH 07/22] pNFS: Support per-layout segment commits in pnfs_generic_commit_pagelist() trondmy
2020-03-24 23:47 ` [PATCH 08/22] NFS/pNFS: Allow O_DIRECT to release the DS commitinfo trondmy
2020-03-24 23:47 ` [PATCH 09/22] NFS: commit errors should be fatal trondmy
2020-03-24 23:47 ` [PATCH 10/22] NFS: Fix O_DIRECT commit verifier handling trondmy
2020-03-24 23:47 ` [PATCH 11/22] NFS/pNFS: Support commit arrays in nfs_clear_pnfs_ds_commit_verifiers() trondmy
2020-03-24 23:47 ` [PATCH 12/22] pNFS: Add infrastructure for cleaning up per-layout commit structures trondmy
2020-03-24 23:47 ` [PATCH 13/22] pNFS: Enable per-layout segment " trondmy
2020-03-24 23:47 ` [PATCH 14/22] NFS/pNFS: Add a helper pnfs_generic_search_commit_reqs() trondmy
2020-03-24 23:47 ` [PATCH 15/22] NFS: Remove bucket array from struct pnfs_ds_commit_info trondmy
2020-03-24 23:47 ` [PATCH 16/22] NFS/pNFS: Clean up pNFS commit operations trondmy
2020-03-24 23:47 ` [PATCH 17/22] NFS/pNFS: Simplify bucket layout segment reference counting trondmy
2020-03-24 23:47 ` [PATCH 18/22] NFS/pNFS: Fix pnfs_layout_mark_request_commit() invalid layout segment handling trondmy
2020-03-24 23:47 ` [PATCH 19/22] pNFS/flexfile: Don't merge layout segments if the mirrors don't match trondmy
2020-03-24 23:47 ` trondmy [this message]
2020-03-24 23:47 ` [PATCH 21/22] pNFS/flexfiles: remove requirement for whole file layouts trondmy
2020-03-24 23:47 ` [PATCH 22/22] pNFS/flexfiles: Specify the layout segment range in LAYOUTGET trondmy
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