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authorOlga Kornievskaia <kolga@netapp.com>2019-10-08 16:34:36 -0400
committerOlga Kornievskaia <olga.kornievskaia@gmail.com>2019-10-09 12:05:56 -0400
commit0b9018b9cab9b6a30fd6758ff0745ff74efcf374 (patch)
tree700e0b52989eb63b38619c364de60c19373202bd /fs/nfs
parentec4b0925089826af45e99cdf78a8ac84c1d005f1 (diff)
downloadlinux-0b9018b9cab9b6a30fd6758ff0745ff74efcf374.tar.bz2
NFS: skip recovery of copy open on dest server
Mark the open created for the source file on the destination server. Then if this open is going thru a recovery, then fail the recovery as we don't need to be recoving a "fake" open. We need to fail the ongoing READs and vfs_copy_file_range(). Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/nfs4_fs.h1
-rw-r--r--fs/nfs/nfs4file.c1
-rw-r--r--fs/nfs/nfs4state.c14
3 files changed, 16 insertions, 0 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 5f279425ee77..814674f073a1 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -168,6 +168,7 @@ enum {
NFS_STATE_CHANGE_WAIT, /* A state changing operation is outstanding */
#ifdef CONFIG_NFS_V4_2
NFS_CLNT_DST_SSC_COPY_STATE, /* dst server open state on client*/
+ NFS_SRV_SSC_COPY_STATE, /* ssc state on the dst server */
#endif /* CONFIG_NFS_V4_2 */
};
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 1898262a2cb1..a932fc9ca9c4 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -352,6 +352,7 @@ nfs42_ssc_open(struct vfsmount *ss_mnt, struct nfs_fh *src_fh,
if (ctx->state == NULL)
goto out_stateowner;
+ set_bit(NFS_SRV_SSC_COPY_STATE, &ctx->state->flags);
set_bit(NFS_OPEN_STATE, &ctx->state->flags);
memcpy(&ctx->state->open_stateid.other, &stateid->other,
NFS4_STATEID_OTHER_SIZE);
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 0c6d53dc3672..c45b3007e2af 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1609,6 +1609,9 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
struct nfs4_state *state;
unsigned int loop = 0;
int status = 0;
+#ifdef CONFIG_NFS_V4_2
+ bool found_ssc_copy_state = false;
+#endif /* CONFIG_NFS_V4_2 */
/* Note: we rely on the sp->so_states list being ordered
* so that we always reclaim open(O_RDWR) and/or open(O_WRITE)
@@ -1628,6 +1631,13 @@ restart:
continue;
if (state->state == 0)
continue;
+#ifdef CONFIG_NFS_V4_2
+ if (test_bit(NFS_SRV_SSC_COPY_STATE, &state->flags)) {
+ nfs4_state_mark_recovery_failed(state, -EIO);
+ found_ssc_copy_state = true;
+ continue;
+ }
+#endif /* CONFIG_NFS_V4_2 */
refcount_inc(&state->count);
spin_unlock(&sp->so_lock);
status = __nfs4_reclaim_open_state(sp, state, ops);
@@ -1682,6 +1692,10 @@ restart:
}
raw_write_seqcount_end(&sp->so_reclaim_seqcount);
spin_unlock(&sp->so_lock);
+#ifdef CONFIG_NFS_V4_2
+ if (found_ssc_copy_state)
+ return -EIO;
+#endif /* CONFIG_NFS_V4_2 */
return 0;
out_err:
nfs4_put_open_state(state);