From: Peng Tao Date: Fri, 21 Aug 2015 04:49:44 +0000 (+0800) Subject: NFS41: remove NFS_LAYOUT_ROC flag X-Git-Tag: firefly_0821_release~176^2~1127^2~40 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3976143b063e3c42fe5471d87860f6ae118e0eee;p=firefly-linux-kernel-4.4.55.git NFS41: remove NFS_LAYOUT_ROC flag If we return delegation before closing, we fail to do roc check during close because NFS_LAYOUT_ROC is cleared by delegreturn and it causes layouts to be still hanging around after delegreturn + close, which is a voilation against protocol. Signed-off-by: Peng Tao Signed-off-by: Trond Myklebust --- diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index cf90eeda9d71..247c5a5d2d6b 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1068,8 +1068,7 @@ bool pnfs_roc(struct inode *ino) spin_lock(&ino->i_lock); lo = nfsi->layout; - if (!lo || !test_and_clear_bit(NFS_LAYOUT_ROC, &lo->plh_flags) || - test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) + if (!lo || test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) goto out_noroc; /* no roc if we hold a delegation */ @@ -1617,10 +1616,8 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) pnfs_get_lseg(lseg); pnfs_layout_insert_lseg(lo, lseg); - if (res->return_on_close) { + if (res->return_on_close) set_bit(NFS_LSEG_ROC, &lseg->pls_flags); - set_bit(NFS_LAYOUT_ROC, &lo->plh_flags); - } spin_unlock(&ino->i_lock); pnfs_free_lseg_list(&free_me); diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index a3d57a8fac76..02c27f93caf1 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -94,7 +94,6 @@ enum { NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */ NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */ NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ - NFS_LAYOUT_ROC, /* some lseg had roc bit set */ NFS_LAYOUT_RETURN, /* Return this layout ASAP */ NFS_LAYOUT_RETURN_BEFORE_CLOSE, /* Return this layout before close */ NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */