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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-10 13:03:38 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-10 13:03:38 -0700 |
commit | 73ccb023a2f25b72c4b95499ca24760588014614 (patch) | |
tree | b0fd9968af3e929ac496f159420a25dc3e1dcafb /fs/nfs/file.c | |
parent | f94c128eefcce2e3448d543f13cd7d7b8aa660a5 (diff) | |
parent | 76b2a303384e1d6299c3a0249f0f0ce2f8f96017 (diff) | |
download | op-kernel-dev-73ccb023a2f25b72c4b95499ca24760588014614.zip op-kernel-dev-73ccb023a2f25b72c4b95499ca24760588014614.tar.gz |
Merge tag 'nfs-for-4.12-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
Stable bugfixes:
- Fix use after free in write error path
- Use GFP_NOIO for two allocations in writeback
- Fix a hang in OPEN related to server reboot
- Check the result of nfs4_pnfs_ds_connect
- Fix an rcu lock leak
Features:
- Removal of the unmaintained and unused OSD pNFS layout
- Cleanup and removal of lots of unnecessary dprintk()s
- Cleanup and removal of some memory failure paths now that GFP_NOFS
is guaranteed to never fail.
- Remove the v3-only data server limitation on pNFS/flexfiles
Bugfixes:
- RPC/RDMA connection handling bugfixes
- Copy offload: fixes to ensure the copied data is COMMITed to disk.
- Readdir: switch back to using the ->iterate VFS interface
- File locking fixes from Ben Coddington
- Various use-after-free and deadlock issues in pNFS
- Write path bugfixes"
* tag 'nfs-for-4.12-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (89 commits)
pNFS/flexfiles: Always attempt to call layoutstats when flexfiles is enabled
NFSv4.1: Work around a Linux server bug...
NFS append COMMIT after synchronous COPY
NFSv4: Fix exclusive create attributes encoding
NFSv4: Fix an rcu lock leak
nfs: use kmap/kunmap directly
NFS: always treat the invocation of nfs_getattr as cache hit when noac is on
Fix nfs_client refcounting if kmalloc fails in nfs4_proc_exchange_id and nfs4_proc_async_renew
NFSv4.1: RECLAIM_COMPLETE must handle NFS4ERR_CONN_NOT_BOUND_TO_SESSION
pNFS: Fix NULL dereference in pnfs_generic_alloc_ds_commits
pNFS: Fix a typo in pnfs_generic_alloc_ds_commits
pNFS: Fix a deadlock when coalescing writes and returning the layout
pNFS: Don't clear the layout return info if there are segments to return
pNFS: Ensure we commit the layout if it has been invalidated
pNFS: Don't send COMMITs to the DSes if the server invalidated our layout
pNFS/flexfiles: Fix up the ff_layout_write_pagelist failure path
pNFS: Ensure we check layout validity before marking it for return
NFS4.1 handle interrupted slot reuse from ERR_DELAY
NFSv4: check return value of xdr_inline_decode
nfs/filelayout: fix NULL pointer dereference in fl_pnfs_update_layout()
...
Diffstat (limited to 'fs/nfs/file.c')
-rw-r--r-- | fs/nfs/file.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 6682139..5713eb3 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -482,7 +482,7 @@ static int nfs_launder_page(struct page *page) inode->i_ino, (long long)page_offset(page)); nfs_fscache_wait_on_page_write(nfsi, page); - return nfs_wb_launder_page(inode, page); + return nfs_wb_page(inode, page); } static int nfs_swap_activate(struct swap_info_struct *sis, struct file *file, @@ -697,14 +697,14 @@ do_unlk(struct file *filp, int cmd, struct file_lock *fl, int is_local) if (!IS_ERR(l_ctx)) { status = nfs_iocounter_wait(l_ctx); nfs_put_lock_context(l_ctx); - if (status < 0) + /* NOTE: special case + * If we're signalled while cleaning up locks on process exit, we + * still need to complete the unlock. + */ + if (status < 0 && !(fl->fl_flags & FL_CLOSE)) return status; } - /* NOTE: special case - * If we're signalled while cleaning up locks on process exit, we - * still need to complete the unlock. - */ /* * Use local locking if mounted with "-onolock" or with appropriate * "-olocal_lock=" @@ -820,9 +820,23 @@ int nfs_flock(struct file *filp, int cmd, struct file_lock *fl) if (NFS_SERVER(inode)->flags & NFS_MOUNT_LOCAL_FLOCK) is_local = 1; - /* We're simulating flock() locks using posix locks on the server */ - if (fl->fl_type == F_UNLCK) + /* + * VFS doesn't require the open mode to match a flock() lock's type. + * NFS, however, may simulate flock() locking with posix locking which + * requires the open mode to match the lock type. + */ + switch (fl->fl_type) { + case F_UNLCK: return do_unlk(filp, cmd, fl, is_local); + case F_RDLCK: + if (!(filp->f_mode & FMODE_READ)) + return -EBADF; + break; + case F_WRLCK: + if (!(filp->f_mode & FMODE_WRITE)) + return -EBADF; + } + return do_setlk(filp, cmd, fl, is_local); } EXPORT_SYMBOL_GPL(nfs_flock); |