From: Jim Rees <rees@umich.edu>
To: linux-nfs@vger.kernel.org
Cc: peter honeyman <honey@citi.umich.edu>
Subject: [PATCH 03/34] pnfs: let layoutcommit code handle multiple segments
Date: Sun, 12 Jun 2011 19:43:52 -0400 [thread overview]
Message-ID: <9f228c643de1f0378835d6ec9a493c1320bf001d.1307921137.git.rees@umich.edu> (raw)
In-Reply-To: <cover.1307921137.git.rees@umich.edu>
From: Peng Tao <bergwolf@gmail.com>
Some layout driver like block will have multiple segments.
Generic code should be able to handle it.
Signed-off-by: Peng Tao <peng_tao@emc.com>
---
fs/nfs/pnfs.c | 17 +++++++++++++----
fs/nfs/pnfs.h | 1 +
2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index e3d618b..f03a5e0 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -892,7 +892,7 @@ pnfs_find_lseg(struct pnfs_layout_hdr *lo,
dprintk("%s:Begin\n", __func__);
assert_spin_locked(&lo->plh_inode->i_lock);
- list_for_each_entry(lseg, &lo->plh_segs, pls_list) {
+ list_for_each_entry_reverse(lseg, &lo->plh_segs, pls_list) {
if (test_bit(NFS_LSEG_VALID, &lseg->pls_flags) &&
is_matching_lseg(&lseg->pls_range, range)) {
ret = get_lseg(lseg);
@@ -1193,10 +1193,18 @@ pnfs_try_to_read_data(struct nfs_read_data *rdata,
static struct pnfs_layout_segment *pnfs_list_write_lseg(struct inode *inode)
{
struct pnfs_layout_segment *lseg, *rv = NULL;
+ loff_t max_pos = 0;
+
+ list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list) {
+ if (lseg->pls_range.iomode == IOMODE_RW) {
+ if (max_pos < lseg->pls_end_pos)
+ max_pos = lseg->pls_end_pos;
+ if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, &lseg->pls_flags))
+ rv = lseg;
+ }
+ }
+ rv->pls_end_pos = max_pos;
- list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list)
- if (lseg->pls_range.iomode == IOMODE_RW)
- rv = lseg;
return rv;
}
@@ -1211,6 +1219,7 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata)
if (!test_and_set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) {
/* references matched in nfs4_layoutcommit_release */
get_lseg(wdata->lseg);
+ set_bit(NFS_LSEG_LAYOUTCOMMIT, &wdata->lseg->pls_flags);
wdata->lseg->pls_lc_cred =
get_rpccred(wdata->args.context->state->owner->so_cred);
mark_as_dirty = true;
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index b071b56..a3fc0f2 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -36,6 +36,7 @@
enum {
NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */
NFS_LSEG_ROC, /* roc bit received from server */
+ NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */
};
struct pnfs_layout_segment {
--
1.7.4.1
next prev parent reply other threads:[~2011-06-12 23:43 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-12 23:43 [PATCH 00/34] pnfs block layout driver based on v3.0-rc2 Jim Rees
2011-06-12 23:43 ` [PATCH 01/34] pnfs: GETDEVICELIST Jim Rees
2011-06-12 23:43 ` [PATCH 02/34] pnfs: add set-clear layoutdriver interface Jim Rees
2011-06-12 23:43 ` Jim Rees [this message]
2011-06-13 14:36 ` [PATCH 03/34] pnfs: let layoutcommit code handle multiple segments Fred Isaman
2011-06-14 10:40 ` tao.peng
2011-06-14 13:58 ` Fred Isaman
2011-06-14 14:28 ` Benny Halevy
2011-06-12 23:43 ` [PATCH 04/34] pnfs: hook nfs_write_begin/end to allow layout driver manipulation Jim Rees
2011-06-13 14:44 ` Fred Isaman
2011-06-14 11:01 ` tao.peng
2011-06-14 14:05 ` Fred Isaman
2011-06-14 15:53 ` Peng Tao
2011-06-14 16:02 ` Fred Isaman
2011-06-12 23:43 ` [PATCH 05/34] pnfs: ask for layout_blksize and save it in nfs_server Jim Rees
2011-06-14 15:01 ` Benny Halevy
2011-06-14 15:08 ` Peng Tao
2011-06-12 23:44 ` [PATCH 06/34] pnfs: cleanup_layoutcommit Jim Rees
2011-06-13 21:19 ` Benny Halevy
2011-06-14 15:16 ` Peng Tao
2011-06-14 15:10 ` Benny Halevy
2011-06-14 15:21 ` Peng Tao
2011-06-14 15:19 ` Benny Halevy
2011-06-12 23:44 ` [PATCH 07/34] pnfsblock: define PNFS_BLOCK Kconfig option Jim Rees
2011-06-14 15:13 ` Benny Halevy
2011-06-12 23:44 ` [PATCH 08/34] pnfsblock: blocklayout stub Jim Rees
2011-06-12 23:44 ` [PATCH 09/34] pnfsblock: layout alloc and free Jim Rees
2011-06-12 23:44 ` [PATCH 10/34] Add support for simple rpc pipefs Jim Rees
2011-06-12 23:44 ` [PATCH 11/34] pnfs-block: Add block device discovery pipe Jim Rees
2011-06-12 23:44 ` [PATCH 12/34] pnfsblock: basic extent code Jim Rees
2011-06-12 23:44 ` [PATCH 13/34] pnfsblock: add device operations Jim Rees
2011-06-12 23:44 ` [PATCH 14/34] pnfsblock: remove " Jim Rees
2011-06-12 23:44 ` [PATCH 15/34] pnfsblock: lseg alloc and free Jim Rees
2011-06-12 23:44 ` [PATCH 16/34] pnfsblock: merge extents Jim Rees
2011-06-12 23:44 ` [PATCH 17/34] pnfsblock: call and parse getdevicelist Jim Rees
2011-06-14 15:36 ` Benny Halevy
2011-06-12 23:44 ` [PATCH 18/34] pnfsblock: allow use of PG_owner_priv_1 flag Jim Rees
2011-06-13 15:56 ` Fred Isaman
2011-06-12 23:44 ` [PATCH 19/34] pnfsblock: xdr decode pnfs_block_layout4 Jim Rees
2011-06-12 23:44 ` [PATCH 20/34] pnfsblock: find_get_extent Jim Rees
2011-06-12 23:44 ` [PATCH 21/34] pnfsblock: SPLITME: add extent manipulation functions Jim Rees
2011-06-14 15:40 ` Benny Halevy
2011-06-12 23:44 ` [PATCH 22/34] pnfsblock: merge rw extents Jim Rees
2011-06-12 23:44 ` [PATCH 23/34] pnfsblock: encode_layoutcommit Jim Rees
2011-06-14 15:44 ` Benny Halevy
2011-06-12 23:44 ` [PATCH 24/34] pnfsblock: cleanup_layoutcommit Jim Rees
2011-06-12 23:44 ` [PATCH 25/34] pnfsblock: bl_read_pagelist Jim Rees
2011-06-12 23:44 ` [PATCH 26/34] pnfsblock: write_begin Jim Rees
2011-06-12 23:44 ` [PATCH 27/34] pnfsblock: write_end Jim Rees
2011-06-12 23:44 ` [PATCH 28/34] pnfsblock: write_end_cleanup Jim Rees
2011-06-12 23:45 ` [PATCH 29/34] pnfsblock: bl_write_pagelist support functions Jim Rees
2011-06-12 23:45 ` [PATCH 30/34] pnfsblock: bl_write_pagelist Jim Rees
2011-06-12 23:45 ` [PATCH 31/34] pnfsblock: note written INVAL areas for layoutcommit Jim Rees
2011-06-12 23:45 ` [PATCH 32/34] pnfsblock: Implement release_inval_marks Jim Rees
2011-06-12 23:45 ` [PATCH 33/34] Add configurable prefetch size for layoutget Jim Rees
2011-06-12 23:45 ` [PATCH 34/34] NFS41: do not update isize if inode needs layoutcommit Jim Rees
2011-06-14 16:15 ` Benny Halevy
2011-06-14 16:22 ` Fred Isaman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=9f228c643de1f0378835d6ec9a493c1320bf001d.1307921137.git.rees@umich.edu \
--to=rees@umich.edu \
--cc=honey@citi.umich.edu \
--cc=linux-nfs@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).