AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-24 01:30:55 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

pNFS: Stricter ordering of layoutget and layoutreturn

Browse Source 
commit 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 upstream.

If a layout return is in progress, we should wait for it to complete,
in case the layout segment we are picking up gets returned too.

Fixes: 30cb3ee299 ("pNFS: Handle NFS4ERR_OLD_STATEID on layoutreturn by bumping the state seqid")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Trond Myklebust 2021-01-05 06:43:45 -05:00 committed by Greg Kroah-Hartman
parent ecaaad1801
commit 06f58dbc49
1 changed files with 21 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
fs/nfs/pnfs.c
View File

@ -2019,6 +2019,27 @@ pnfs_update_layout(struct inode *ino,
goto lookup_again;
}
/*
* Because we free lsegs when sending LAYOUTRETURN, we need to wait
* for LAYOUTRETURN.
*/
if (test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) {
spin_unlock(&ino->i_lock);
dprintk("%s wait for layoutreturn\n", __func__);
lseg = ERR_PTR(pnfs_prepare_to_retry_layoutget(lo));
if (!IS_ERR(lseg)) {
pnfs_put_layout_hdr(lo);
dprintk("%s retrying\n", __func__);
trace_pnfs_update_layout(ino, pos, count, iomode, lo,
lseg,
PNFS_UPDATE_LAYOUT_RETRY);
goto lookup_again;
}
trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg,
PNFS_UPDATE_LAYOUT_RETURN);
goto out_put_layout_hdr;
}
lseg = pnfs_find_lseg(lo, &arg, strict_iomode);
if (lseg) {
trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg,
@ -2071,28 +2092,6 @@ pnfs_update_layout(struct inode *ino,
nfs4_stateid_copy(&stateid, &lo->plh_stateid);
}
/*
* Because we free lsegs before sending LAYOUTRETURN, we need to wait
* for LAYOUTRETURN even if first is true.
*/
if (test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) {
spin_unlock(&ino->i_lock);
dprintk("%s wait for layoutreturn\n", __func__);
lseg = ERR_PTR(pnfs_prepare_to_retry_layoutget(lo));
if (!IS_ERR(lseg)) {
if (first)
pnfs_clear_first_layoutget(lo);
pnfs_put_layout_hdr(lo);
dprintk("%s retrying\n", __func__);
trace_pnfs_update_layout(ino, pos, count, iomode, lo,
lseg, PNFS_UPDATE_LAYOUT_RETRY);
goto lookup_again;
}
trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg,
PNFS_UPDATE_LAYOUT_RETURN);
goto out_put_layout_hdr;
}
if (pnfs_layoutgets_blocked(lo)) {
trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg,
PNFS_UPDATE_LAYOUT_BLOCKED);