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NFS client bugfixes for Linux 6.0

Browse Source 
Highlights include:
 
 Stable fixes
 - NFS: Fix another fsync() issue after a server reboot
 
 Bugfixes
 - NFS: unlink/rmdir shouldn't call d_delete() twice on ENOENT
 - NFS: Fix missing unlock in nfs_unlink()
 - Add sanity checking of the file type used by __nfs42_ssc_open
 - Fix a case where we're failing to set task->tk_rpc_status
 
 Cleanups
 - Remove the flag NFS_CONTEXT_RESEND_WRITES that got obsoleted by the
   fsync() fix
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Merge tag 'nfs-for-5.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client fixes from Trond Myklebust:
"Stable fixes:
   - NFS: Fix another fsync() issue after a server reboot

  Bugfixes:
   - NFS: unlink/rmdir shouldn't call d_delete() twice on ENOENT
   - NFS: Fix missing unlock in nfs_unlink()
   - Add sanity checking of the file type used by __nfs42_ssc_open
   - Fix a case where we're failing to set task->tk_rpc_status

  Cleanups:
   - Remove the NFS_CONTEXT_RESEND_WRITES flag that got obsoleted by the
     fsync() fix"

* tag 'nfs-for-5.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: RPC level errors should set task->tk_rpc_status
  NFSv4.2 fix problems with __nfs42_ssc_open
  NFS: unlink/rmdir shouldn't call d_delete() twice on ENOENT
  NFS: Cleanup to remove unused flag NFS_CONTEXT_RESEND_WRITES
  NFS: Remove a bogus flag setting in pnfs_write_done_resend_to_mds
  NFS: Fix another fsync() issue after a server reboot
  NFS: Fix missing unlock in nfs_unlink()
This commit is contained in:
Linus Torvalds 2022-08-22 11:40:01 -07:00
commit 072e51356c
8 changed files with 24 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
fs/nfs/dir.c
View File

@ -2382,7 +2382,8 @@ static void nfs_dentry_remove_handle_error(struct inode *dir,
{
switch (error) {
case -ENOENT:
d_delete(dentry);
if (d_really_is_positive(dentry))
d_delete(dentry);
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
break;
case 0:
@ -2484,8 +2485,10 @@ int nfs_unlink(struct inode *dir, struct dentry *dentry)
*/
error = -ETXTBSY;
if (WARN_ON(dentry->d_flags & DCACHE_NFSFS_RENAMED) ||
WARN_ON(dentry->d_fsdata == NFS_FSDATA_BLOCKED))
WARN_ON(dentry->d_fsdata == NFS_FSDATA_BLOCKED)) {
spin_unlock(&dentry->d_lock);
goto out;
}
if (dentry->d_fsdata)
/* old devname */
kfree(dentry->d_fsdata);

15
fs/nfs/file.c
View File

@ -221,8 +221,10 @@ nfs_file_fsync_commit(struct file *file, int datasync)
int
nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
{
struct nfs_open_context *ctx = nfs_file_open_context(file);
struct inode *inode = file_inode(file);
struct nfs_inode *nfsi = NFS_I(inode);
long save_nredirtied = atomic_long_read(&nfsi->redirtied_pages);
long nredirtied;
int ret;
trace_nfs_fsync_enter(inode);
@ -237,15 +239,10 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
ret = pnfs_sync_inode(inode, !!datasync);
if (ret != 0)
break;
if (!test_and_clear_bit(NFS_CONTEXT_RESEND_WRITES, &ctx->flags))
nredirtied = atomic_long_read(&nfsi->redirtied_pages);
if (nredirtied == save_nredirtied)
break;
/*
* If nfs_file_fsync_commit detected a server reboot, then
* resend all dirty pages that might have been covered by
* the NFS_CONTEXT_RESEND_WRITES flag
*/
start = 0;
end = LLONG_MAX;
save_nredirtied = nredirtied;
}
trace_nfs_fsync_exit(inode, ret);

1
fs/nfs/inode.c
View File

@ -426,6 +426,7 @@ nfs_ilookup(struct super_block *sb, struct nfs_fattr *fattr, struct nfs_fh *fh)
static void nfs_inode_init_regular(struct nfs_inode *nfsi)
{
atomic_long_set(&nfsi->nrequests, 0);
atomic_long_set(&nfsi->redirtied_pages, 0);
INIT_LIST_HEAD(&nfsi->commit_info.list);
atomic_long_set(&nfsi->commit_info.ncommit, 0);
atomic_set(&nfsi->commit_info.rpcs_out, 0);

6
fs/nfs/nfs4file.c
View File

@ -340,6 +340,11 @@ static struct file *__nfs42_ssc_open(struct vfsmount *ss_mnt,
goto out;
}
if (!S_ISREG(fattr->mode)) {
res = ERR_PTR(-EBADF);
goto out;
}
res = ERR_PTR(-ENOMEM);
len = strlen(SSC_READ_NAME_BODY) + 16;
read_name = kzalloc(len, GFP_KERNEL);
@ -357,6 +362,7 @@ static struct file *__nfs42_ssc_open(struct vfsmount *ss_mnt,
r_ino->i_fop);
if (IS_ERR(filep)) {
res = ERR_CAST(filep);
iput(r_ino);
goto out_free_name;
}

1
fs/nfs/pnfs.c
View File

@ -2817,7 +2817,6 @@ int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *hdr)
/* Resend all requests through the MDS */
nfs_pageio_init_write(&pgio, hdr->inode, FLUSH_STABLE, true,
hdr->completion_ops);
set_bit(NFS_CONTEXT_RESEND_WRITES, &hdr->args.context->flags);
return nfs_pageio_resend(&pgio, hdr);
}
EXPORT_SYMBOL_GPL(pnfs_write_done_resend_to_mds);

6
fs/nfs/write.c
View File

@ -1420,10 +1420,12 @@ static void nfs_initiate_write(struct nfs_pgio_header *hdr,
*/
static void nfs_redirty_request(struct nfs_page *req)
{
struct nfs_inode *nfsi = NFS_I(page_file_mapping(req->wb_page)->host);
/* Bump the transmission count */
req->wb_nio++;
nfs_mark_request_dirty(req);
set_bit(NFS_CONTEXT_RESEND_WRITES, &nfs_req_openctx(req)->flags);
atomic_long_inc(&nfsi->redirtied_pages);
nfs_end_page_writeback(req);
nfs_release_request(req);
}
@ -1904,7 +1906,7 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
/* We have a mismatch. Write the page again */
dprintk_cont(" mismatch\n");
nfs_mark_request_dirty(req);
set_bit(NFS_CONTEXT_RESEND_WRITES, &nfs_req_openctx(req)->flags);
atomic_long_inc(&NFS_I(data->inode)->redirtied_pages);
next:
nfs_unlock_and_release_request(req);
/* Latency breaker */

2
include/linux/nfs_fs.h
View File

@ -83,7 +83,6 @@ struct nfs_open_context {
fmode_t mode;
unsigned long flags;
#define NFS_CONTEXT_RESEND_WRITES (1)
#define NFS_CONTEXT_BAD (2)
#define NFS_CONTEXT_UNLOCK (3)
#define NFS_CONTEXT_FILE_OPEN (4)
@ -182,6 +181,7 @@ struct nfs_inode {
/* Regular file */
struct {
atomic_long_t nrequests;
atomic_long_t redirtied_pages;
struct nfs_mds_commit_info commit_info;
struct mutex commit_mutex;
};

2
net/sunrpc/clnt.c
View File

@ -1902,7 +1902,7 @@ call_encode(struct rpc_task *task)
break;
case -EKEYEXPIRED:
if (!task->tk_cred_retry) {
rpc_exit(task, task->tk_status);
rpc_call_rpcerror(task, task->tk_status);
} else {
task->tk_action = call_refresh;
task->tk_cred_retry--;