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authorOlga Kornievskaia <olga.kornievskaia@gmail.com>2018-06-11 15:32:06 -0400
committerTrond Myklebust <trond.myklebust@hammerspace.com>2018-06-12 08:48:04 -0400
commit93b7f7ad2018d2037559b1d0892417864c78b371 (patch)
tree381b44b5f8ec0bbc614368cd3349a4e9f84f32f5 /fs/nfs/pnfs.c
parentNFSv4.1: Fix the client behaviour on NFS4ERR_SEQ_FALSE_RETRY (diff)
downloadlinux-dev-93b7f7ad2018d2037559b1d0892417864c78b371.tar.xz
linux-dev-93b7f7ad2018d2037559b1d0892417864c78b371.zip
skip LAYOUTRETURN if layout is invalid
Currently, when IO to DS fails, client returns the layout and retries against the MDS. However, then on umounting (inode eviction) it returns the layout again. This is because pnfs_return_layout() was changed in commit d78471d32bb6 ("pnfs/blocklayout: set PNFS_LAYOUTRETURN_ON_ERROR") to always set NFS_LAYOUT_RETURN_REQUESTED so even if we returned the layout, it will be returned again. Instead, let's also check if we have already marked the layout invalid. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/pnfs.c')
-rw-r--r--fs/nfs/pnfs.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index d93942fa3817..bcc3addec3c5 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1211,7 +1211,7 @@ _pnfs_return_layout(struct inode *ino)
LIST_HEAD(tmp_list);
nfs4_stateid stateid;
int status = 0;
- bool send;
+ bool send, valid_layout;
dprintk("NFS: %s for inode %lu\n", __func__, ino->i_ino);
@@ -1232,6 +1232,7 @@ _pnfs_return_layout(struct inode *ino)
goto out_put_layout_hdr;
spin_lock(&ino->i_lock);
}
+ valid_layout = pnfs_layout_is_valid(lo);
pnfs_clear_layoutcommit(ino, &tmp_list);
pnfs_mark_matching_lsegs_invalid(lo, &tmp_list, NULL, 0);
@@ -1245,7 +1246,8 @@ _pnfs_return_layout(struct inode *ino)
}
/* Don't send a LAYOUTRETURN if list was initially empty */
- if (!test_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags)) {
+ if (!test_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags) ||
+ !valid_layout) {
spin_unlock(&ino->i_lock);
dprintk("NFS: %s no layout segments to return\n", __func__);
goto out_put_layout_hdr;