GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

NFS add a simple sync nfs4_proc_commit after async COPY

Browse source 
A COPY with unstable write data needs a simple sync commit.
Filehandle value is gotten as a part of the inner loop so in
case of a reboot retry it should get the new value.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Olga Kornievskaia 2018-07-09 15:13:36 -04:00 • committed by Anna Schumaker
parent 539f57b3e0
commit 6b8d84e2f1
3 changed files with 66 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

31
fs/nfs/nfs42proc.c
View file

@ -185,6 +185,30 @@ out:
return status;
}
static int process_copy_commit(struct file *dst, loff_t pos_dst,
struct nfs42_copy_res *res)
{
struct nfs_commitres cres;
int status = -ENOMEM;
cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
if (!cres.verf)
goto out;
status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres);
if (status)
goto out_free;
if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
&cres.verf->verifier)) {
dprintk("commit verf differs from copy verf\n");
status = -EAGAIN;
}
out_free:
kfree(cres.verf);
out:
return status;
}
static ssize_t _nfs42_proc_copy(struct file *src,
struct nfs_lock_context *src_lock,
struct file *dst,
@ -251,6 +275,13 @@ static ssize_t _nfs42_proc_copy(struct file *src,
return status;
}
if ((!res->synchronous || !args->sync) &&
res->write_res.verifier.committed != NFS_FILE_SYNC) {
status = process_copy_commit(dst, pos_dst, res);
if (status)
return status;
}
truncate_pagecache_range(dst_inode, pos_dst,
pos_dst + res->write_res.count);