xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

flexfiles: use per-mirror specified stateid for IO

Browse Source 
rfc8435 says:

  For tight coupling, ffds_stateid provides the stateid to be used by
  the client to access the file.

However current implementation replaces per-mirror provided stateid with
by open or lock stateid.

Ensure that per-mirror stateid is used by ff_layout_write_prepare_v4 and
nfs4_ff_layout_prepare_ds.

Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Signed-off-by: Rick Macklem <rmacklem@uoguelph.ca>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Tigran Mkrtchyan
2018-11-21 12:25:41 +01:00
committed by Trond Myklebust
parent 99f2c55591
commit bb21ce0ad2
3 changed files with 32 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
fs/nfs/flexfilelayout/flexfilelayout.c
View File

@@ -1361,12 +1361,7 @@ static void ff_layout_read_prepare_v4(struct rpc_task *task, void *data)
task))
return;
if (ff_layout_read_prepare_common(task, hdr))
return;
if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context,
hdr->args.lock_context, FMODE_READ) == -EIO)
rpc_exit(task, -EIO); /* lost lock, terminate I/O */
ff_layout_read_prepare_common(task, hdr);
}
static void ff_layout_read_call_done(struct rpc_task *task, void *data)
@@ -1542,12 +1537,7 @@ static void ff_layout_write_prepare_v4(struct rpc_task *task, void *data)
task))
return;
if (ff_layout_write_prepare_common(task, hdr))
return;
if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context,
hdr->args.lock_context, FMODE_WRITE) == -EIO)
rpc_exit(task, -EIO); /* lost lock, terminate I/O */
ff_layout_write_prepare_common(task, hdr);
}
static void ff_layout_write_call_done(struct rpc_task *task, void *data)
@@ -1742,6 +1732,10 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr)
fh = nfs4_ff_layout_select_ds_fh(lseg, idx);
if (fh)
hdr->args.fh = fh;
if (!nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid))
goto out_failed;
/*
* Note that if we ever decide to split across DSes,
* then we may need to handle dense-like offsets.
@@ -1804,6 +1798,9 @@ ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync)
if (fh)
hdr->args.fh = fh;
if (!nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid))
goto out_failed;
/*
* Note that if we ever decide to split across DSes,
* then we may need to handle dense-like offsets.