This is a note to let you know that I've just added the patch titled
nfs41: .init_read and .init_write can be called with valid pg_lseg
to the 3.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nfs41-.init_read-and-.init_write-can-be-called-with-valid-pg_lseg.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From cb5d04bc39e914124e811ea55f3034d2379a5f6c Mon Sep 17 00:00:00 2001
From: Peng Tao <tao.peng@xxxxxxxxxxxxxxx>
Date: Sat, 24 Jan 2015 22:14:52 +0800
Subject: nfs41: .init_read and .init_write can be called with valid pg_lseg
From: Peng Tao <tao.peng@xxxxxxxxxxxxxxx>
commit cb5d04bc39e914124e811ea55f3034d2379a5f6c upstream.
With pgio refactoring in v3.15, .init_read and .init_write can be
called with valid pgio->pg_lseg. file layout was fixed at that time
by commit c6194271f (pnfs: filelayout: support non page aligned
layouts). But the generic helper still needs to be fixed.
Signed-off-by: Peng Tao <tao.peng@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/nfs/pnfs.c | 41 ++++++++++++++++++++---------------------
1 file changed, 20 insertions(+), 21 deletions(-)
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1445,19 +1445,19 @@ pnfs_generic_pg_init_read(struct nfs_pag
{
u64 rd_size = req->wb_bytes;
- WARN_ON_ONCE(pgio->pg_lseg != NULL);
-
- if (pgio->pg_dreq == NULL)
- rd_size = i_size_read(pgio->pg_inode) - req_offset(req);
- else
- rd_size = nfs_dreq_bytes_left(pgio->pg_dreq);
-
- pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
- req->wb_context,
- req_offset(req),
- rd_size,
- IOMODE_READ,
- GFP_KERNEL);
+ if (pgio->pg_lseg == NULL) {
+ if (pgio->pg_dreq == NULL)
+ rd_size = i_size_read(pgio->pg_inode) - req_offset(req);
+ else
+ rd_size = nfs_dreq_bytes_left(pgio->pg_dreq);
+
+ pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
+ req->wb_context,
+ req_offset(req),
+ rd_size,
+ IOMODE_READ,
+ GFP_KERNEL);
+ }
/* If no lseg, fall back to read through mds */
if (pgio->pg_lseg == NULL)
nfs_pageio_reset_read_mds(pgio);
@@ -1469,14 +1469,13 @@ void
pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req, u64 wb_size)
{
- WARN_ON_ONCE(pgio->pg_lseg != NULL);
-
- pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
- req->wb_context,
- req_offset(req),
- wb_size,
- IOMODE_RW,
- GFP_NOFS);
+ if (pgio->pg_lseg == NULL)
+ pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
+ req->wb_context,
+ req_offset(req),
+ wb_size,
+ IOMODE_RW,
+ GFP_NOFS);
/* If no lseg, fall back to write through mds */
if (pgio->pg_lseg == NULL)
nfs_pageio_reset_write_mds(pgio);
Patches currently in stable-queue which might be from tao.peng@xxxxxxxxxxxxxxx are
queue-3.19/nfs41-.init_read-and-.init_write-can-be-called-with-valid-pg_lseg.patch
queue-3.19/nfsv4-ensure-we-reference-the-inode-for-return-on-close-in-delegreturn.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html