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pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process()

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If the server returns a new stateid that does not match the one in our
cache, then try to return the one we hold instead of just invalidating
it on the client side. This ensures that both client and server will
agree that the stateid is invalid.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2021-01-21 17:11:42 -05:00
parent 814b849713
commit 08bd8dbe88
1 changed files with 7 additions and 2 deletions
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9
fs/nfs/pnfs.c
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@ -2398,7 +2398,13 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
* We got an entirely new state ID. Mark all segments for the
* inode invalid, and retry the layoutget
*/
pnfs_mark_layout_stateid_invalid(lo, &free_me);
struct pnfs_layout_range range = {
.iomode = IOMODE_ANY,
.length = NFS4_MAX_UINT64,
};
pnfs_set_plh_return_info(lo, IOMODE_ANY, 0);
pnfs_mark_matching_lsegs_return(lo, &lo->plh_return_segs,
&range, 0);
goto out_forget;
}
@ -2417,7 +2423,6 @@ out_forget:
spin_unlock(&ino->i_lock);
lseg->pls_layout = lo;
NFS_SERVER(ino)->pnfs_curr_ld->free_lseg(lseg);
pnfs_free_lseg_list(&free_me);
return ERR_PTR(-EAGAIN);
}