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pnfs: save layoutcommit lwb at layout header

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No need to save it for every lseg.

[Needed in v3.0]
CC: Stable Tree <stable@kernel.org>
Signed-off-by: Peng Tao <peng_tao@emc.com>
Signed-off-by: Jim Rees <rees@umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Peng Tao
2011-07-30 20:52:31 -04:00
committed by Trond Myklebust
parent 374e4e3ec3
commit acff588053
3 changed files with 8 additions and 6 deletions
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10
fs/nfs/pnfs.c
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@@ -1379,9 +1379,11 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata)
dprintk("%s: Set layoutcommit for inode %lu ",
__func__, wdata->inode->i_ino);
}
if (end_pos > wdata->lseg->pls_end_pos)
wdata->lseg->pls_end_pos = end_pos;
if (end_pos > nfsi->layout->plh_lwb)
nfsi->layout->plh_lwb = end_pos;
spin_unlock(&nfsi->vfs_inode.i_lock);
dprintk("%s: lseg %p end_pos %llu\n",
__func__, wdata->lseg, nfsi->layout->plh_lwb);
/* if pnfs_layoutcommit_inode() runs between inode locks, the next one
* will be a noop because NFS_INO_LAYOUTCOMMIT will not be set */
@@ -1433,9 +1435,9 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync)
*/
lseg = pnfs_list_write_lseg(inode);
end_pos = lseg->pls_end_pos;
end_pos = nfsi->layout->plh_lwb;
cred = lseg->pls_lc_cred;
lseg->pls_end_pos = 0;
nfsi->layout->plh_lwb = 0;
lseg->pls_lc_cred = NULL;
memcpy(&data->args.stateid.data, nfsi->layout->plh_stateid.data,