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-rw-r--r--fs/nfs/blocklayout/blocklayout.c22
-rw-r--r--fs/nfs/dir.c41
-rw-r--r--fs/nfs/direct.c10
-rw-r--r--fs/nfs/inode.c1
-rw-r--r--fs/nfs/nfs4proc.c18
-rw-r--r--fs/nfs/nfs4state.c2
-rw-r--r--fs/nfs/pnfs.c10
-rw-r--r--fs/nfs/pnfs_nfs.c12
-rw-r--r--fs/nfs/read.c4
9 files changed, 83 insertions, 37 deletions
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index 17a42e4eb872..f55a4e756047 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -102,14 +102,15 @@ static inline void put_parallel(struct parallel_io *p)
}
static struct bio *
-bl_submit_bio(int rw, struct bio *bio)
+bl_submit_bio(struct bio *bio)
{
if (bio) {
get_parallel(bio->bi_private);
dprintk("%s submitting %s bio %u@%llu\n", __func__,
- rw == READ ? "read" : "write", bio->bi_iter.bi_size,
+ bio_op(bio) == READ ? "read" : "write",
+ bio->bi_iter.bi_size,
(unsigned long long)bio->bi_iter.bi_sector);
- submit_bio(rw, bio);
+ submit_bio(bio);
}
return NULL;
}
@@ -158,7 +159,7 @@ do_add_page_to_bio(struct bio *bio, int npg, int rw, sector_t isect,
if (disk_addr < map->start || disk_addr >= map->start + map->len) {
if (!dev->map(dev, disk_addr, map))
return ERR_PTR(-EIO);
- bio = bl_submit_bio(rw, bio);
+ bio = bl_submit_bio(bio);
}
disk_addr += map->disk_offset;
disk_addr -= map->start;
@@ -174,9 +175,10 @@ retry:
disk_addr >> SECTOR_SHIFT, end_io, par);
if (!bio)
return ERR_PTR(-ENOMEM);
+ bio_set_op_attrs(bio, rw, 0);
}
if (bio_add_page(bio, page, *len, offset) < *len) {
- bio = bl_submit_bio(rw, bio);
+ bio = bl_submit_bio(bio);
goto retry;
}
return bio;
@@ -252,7 +254,7 @@ bl_read_pagelist(struct nfs_pgio_header *header)
for (i = pg_index; i < header->page_array.npages; i++) {
if (extent_length <= 0) {
/* We've used up the previous extent */
- bio = bl_submit_bio(READ, bio);
+ bio = bl_submit_bio(bio);
/* Get the next one */
if (!ext_tree_lookup(bl, isect, &be, false)) {
@@ -273,7 +275,7 @@ bl_read_pagelist(struct nfs_pgio_header *header)
}
if (is_hole(&be)) {
- bio = bl_submit_bio(READ, bio);
+ bio = bl_submit_bio(bio);
/* Fill hole w/ zeroes w/o accessing device */
dprintk("%s Zeroing page for hole\n", __func__);
zero_user_segment(pages[i], pg_offset, pg_len);
@@ -306,7 +308,7 @@ bl_read_pagelist(struct nfs_pgio_header *header)
header->res.count = (isect << SECTOR_SHIFT) - header->args.offset;
}
out:
- bl_submit_bio(READ, bio);
+ bl_submit_bio(bio);
blk_finish_plug(&plug);
put_parallel(par);
return PNFS_ATTEMPTED;
@@ -398,7 +400,7 @@ bl_write_pagelist(struct nfs_pgio_header *header, int sync)
for (i = pg_index; i < header->page_array.npages; i++) {
if (extent_length <= 0) {
/* We've used up the previous extent */
- bio = bl_submit_bio(WRITE, bio);
+ bio = bl_submit_bio(bio);
/* Get the next one */
if (!ext_tree_lookup(bl, isect, &be, true)) {
header->pnfs_error = -EINVAL;
@@ -427,7 +429,7 @@ bl_write_pagelist(struct nfs_pgio_header *header, int sync)
header->res.count = header->args.count;
out:
- bl_submit_bio(WRITE, bio);
+ bl_submit_bio(bio);
blk_finish_plug(&plug);
put_parallel(par);
return PNFS_ATTEMPTED;
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index aaf7bd0cbae2..19d93d0cd400 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -424,12 +424,17 @@ static int xdr_decode(nfs_readdir_descriptor_t *desc,
static
int nfs_same_file(struct dentry *dentry, struct nfs_entry *entry)
{
+ struct inode *inode;
struct nfs_inode *nfsi;
if (d_really_is_negative(dentry))
return 0;
- nfsi = NFS_I(d_inode(dentry));
+ inode = d_inode(dentry);
+ if (is_bad_inode(inode) || NFS_STALE(inode))
+ return 0;
+
+ nfsi = NFS_I(inode);
if (entry->fattr->fileid == nfsi->fileid)
return 1;
if (nfs_compare_fh(entry->fh, &nfsi->fh) == 0)
@@ -1363,7 +1368,6 @@ EXPORT_SYMBOL_GPL(nfs_dentry_operations);
struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned int flags)
{
struct dentry *res;
- struct dentry *parent;
struct inode *inode = NULL;
struct nfs_fh *fhandle = NULL;
struct nfs_fattr *fattr = NULL;
@@ -1393,7 +1397,6 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in
if (IS_ERR(label))
goto out;
- parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
trace_nfs_lookup_enter(dir, dentry, flags);
error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label);
@@ -1482,11 +1485,13 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
struct file *file, unsigned open_flags,
umode_t mode, int *opened)
{
+ DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
struct nfs_open_context *ctx;
struct dentry *res;
struct iattr attr = { .ia_valid = ATTR_OPEN };
struct inode *inode;
unsigned int lookup_flags = 0;
+ bool switched = false;
int err;
/* Expect a negative dentry */
@@ -1501,7 +1506,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
/* NFS only supports OPEN on regular files */
if ((open_flags & O_DIRECTORY)) {
- if (!d_unhashed(dentry)) {
+ if (!d_in_lookup(dentry)) {
/*
* Hashed negative dentry with O_DIRECTORY: dentry was
* revalidated and is fine, no need to perform lookup
@@ -1525,6 +1530,17 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
attr.ia_size = 0;
}
+ if (!(open_flags & O_CREAT) && !d_in_lookup(dentry)) {
+ d_drop(dentry);
+ switched = true;
+ dentry = d_alloc_parallel(dentry->d_parent,
+ &dentry->d_name, &wq);
+ if (IS_ERR(dentry))
+ return PTR_ERR(dentry);
+ if (unlikely(!d_in_lookup(dentry)))
+ return finish_no_open(file, dentry);
+ }
+
ctx = create_nfs_open_context(dentry, open_flags);
err = PTR_ERR(ctx);
if (IS_ERR(ctx))
@@ -1536,9 +1552,9 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
err = PTR_ERR(inode);
trace_nfs_atomic_open_exit(dir, ctx, open_flags, err);
put_nfs_open_context(ctx);
+ d_drop(dentry);
switch (err) {
case -ENOENT:
- d_drop(dentry);
d_add(dentry, NULL);
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
break;
@@ -1560,14 +1576,23 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
trace_nfs_atomic_open_exit(dir, ctx, open_flags, err);
put_nfs_open_context(ctx);
out:
+ if (unlikely(switched)) {
+ d_lookup_done(dentry);
+ dput(dentry);
+ }
return err;
no_open:
res = nfs_lookup(dir, dentry, lookup_flags);
- err = PTR_ERR(res);
+ if (switched) {
+ d_lookup_done(dentry);
+ if (!res)
+ res = dentry;
+ else
+ dput(dentry);
+ }
if (IS_ERR(res))
- goto out;
-
+ return PTR_ERR(res);
return finish_no_open(file, res);
}
EXPORT_SYMBOL_GPL(nfs_atomic_open);
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 979b3c4dee6a..c7326c2af2c3 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -353,10 +353,12 @@ static ssize_t nfs_direct_wait(struct nfs_direct_req *dreq)
result = wait_for_completion_killable(&dreq->completion);
+ if (!result) {
+ result = dreq->count;
+ WARN_ON_ONCE(dreq->count < 0);
+ }
if (!result)
result = dreq->error;
- if (!result)
- result = dreq->count;
out:
return (ssize_t) result;
@@ -386,8 +388,10 @@ static void nfs_direct_complete(struct nfs_direct_req *dreq, bool write)
if (dreq->iocb) {
long res = (long) dreq->error;
- if (!res)
+ if (dreq->count != 0) {
res = (long) dreq->count;
+ WARN_ON_ONCE(dreq->count < 0);
+ }
dreq->iocb->ki_complete(dreq->iocb, res, 0);
}
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 52e7d6869e3b..dda689d7a8a7 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -282,6 +282,7 @@ nfs_init_locked(struct inode *inode, void *opaque)
struct nfs_fattr *fattr = desc->fattr;
set_nfs_fileid(inode, fattr->fileid);
+ inode->i_mode = fattr->mode;
nfs_copy_fh(NFS_FH(inode), desc->fh);
return 0;
}
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index de97567795a5..ff416d0e24bc 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2882,12 +2882,11 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
call_close |= is_wronly;
else if (is_wronly)
calldata->arg.fmode |= FMODE_WRITE;
+ if (calldata->arg.fmode != (FMODE_READ|FMODE_WRITE))
+ call_close |= is_rdwr;
} else if (is_rdwr)
calldata->arg.fmode |= FMODE_READ|FMODE_WRITE;
- if (calldata->arg.fmode == 0)
- call_close |= is_rdwr;
-
if (!nfs4_valid_open_stateid(state))
call_close = 0;
spin_unlock(&state->owner->so_lock);
@@ -7924,8 +7923,8 @@ nfs4_layoutget_handle_exception(struct rpc_task *task,
break;
}
lo = NFS_I(inode)->layout;
- if (lo && nfs4_stateid_match(&lgp->args.stateid,
- &lo->plh_stateid)) {
+ if (lo && !test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) &&
+ nfs4_stateid_match_other(&lgp->args.stateid, &lo->plh_stateid)) {
LIST_HEAD(head);
/*
@@ -7936,10 +7935,10 @@ nfs4_layoutget_handle_exception(struct rpc_task *task,
pnfs_mark_matching_lsegs_invalid(lo, &head, NULL, 0);
spin_unlock(&inode->i_lock);
pnfs_free_lseg_list(&head);
+ status = -EAGAIN;
+ goto out;
} else
spin_unlock(&inode->i_lock);
- status = -EAGAIN;
- goto out;
}
status = nfs4_handle_exception(server, status, exception);
@@ -8036,7 +8035,10 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags)
.flags = RPC_TASK_ASYNC,
};
struct pnfs_layout_segment *lseg = NULL;
- struct nfs4_exception exception = { .timeout = *timeout };
+ struct nfs4_exception exception = {
+ .inode = inode,
+ .timeout = *timeout,
+ };
int status = 0;
dprintk("--> %s\n", __func__);
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 9679f4749364..834b875900d6 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1488,9 +1488,9 @@ restart:
}
spin_unlock(&state->state_lock);
}
- nfs4_put_open_state(state);
clear_bit(NFS_STATE_RECLAIM_NOGRACE,
&state->flags);
+ nfs4_put_open_state(state);
spin_lock(&sp->so_lock);
goto restart;
}
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 0c7e0d45a4de..0fbe734cc38c 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -361,8 +361,10 @@ pnfs_layout_remove_lseg(struct pnfs_layout_hdr *lo,
list_del_init(&lseg->pls_list);
/* Matched by pnfs_get_layout_hdr in pnfs_layout_insert_lseg */
atomic_dec(&lo->plh_refcount);
- if (list_empty(&lo->plh_segs))
+ if (list_empty(&lo->plh_segs)) {
+ set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags);
clear_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags);
+ }
rpc_wake_up(&NFS_SERVER(inode)->roc_rpcwaitq);
}
@@ -1290,6 +1292,7 @@ alloc_init_layout_hdr(struct inode *ino,
INIT_LIST_HEAD(&lo->plh_bulk_destroy);
lo->plh_inode = ino;
lo->plh_lc_cred = get_rpccred(ctx->cred);
+ lo->plh_flags |= 1 << NFS_LAYOUT_INVALID_STID;
return lo;
}
@@ -1297,6 +1300,8 @@ static struct pnfs_layout_hdr *
pnfs_find_alloc_layout(struct inode *ino,
struct nfs_open_context *ctx,
gfp_t gfp_flags)
+ __releases(&ino->i_lock)
+ __acquires(&ino->i_lock)
{
struct nfs_inode *nfsi = NFS_I(ino);
struct pnfs_layout_hdr *new = NULL;
@@ -1565,8 +1570,7 @@ lookup_again:
* stateid, or it has been invalidated, then we must use the open
* stateid.
*/
- if (lo->plh_stateid.seqid == 0 ||
- test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags)) {
+ if (test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags)) {
/*
* The first layoutget for the file. Need to serialize per
diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c
index 0dfc476da3e1..b38e3c0dc790 100644
--- a/fs/nfs/pnfs_nfs.c
+++ b/fs/nfs/pnfs_nfs.c
@@ -247,7 +247,11 @@ void pnfs_fetch_commit_bucket_list(struct list_head *pages,
}
/* Helper function for pnfs_generic_commit_pagelist to catch an empty
- * page list. This can happen when two commits race. */
+ * page list. This can happen when two commits race.
+ *
+ * This must be called instead of nfs_init_commit - call one or the other, but
+ * not both!
+ */
static bool
pnfs_generic_commit_cancel_empty_pagelist(struct list_head *pages,
struct nfs_commit_data *data,
@@ -256,7 +260,11 @@ pnfs_generic_commit_cancel_empty_pagelist(struct list_head *pages,
if (list_empty(pages)) {
if (atomic_dec_and_test(&cinfo->mds->rpcs_out))
wake_up_atomic_t(&cinfo->mds->rpcs_out);
- nfs_commitdata_release(data);
+ /* don't call nfs_commitdata_release - it tries to put
+ * the open_context which is not acquired until nfs_init_commit
+ * which has not been called on @data */
+ WARN_ON_ONCE(data->context);
+ nfs_commit_free(data);
return true;
}
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 6776d7a7839e..572e5b3b06f1 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -367,13 +367,13 @@ readpage_async_filler(void *data, struct page *page)
nfs_list_remove_request(new);
nfs_readpage_release(new);
error = desc->pgio->pg_error;
- goto out_unlock;
+ goto out;
}
return 0;
out_error:
error = PTR_ERR(new);
-out_unlock:
unlock_page(page);
+out:
return error;
}
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