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| author |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-04-22 15:35:57 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-04-22 15:35:57 -0400 |
| commit | 71d0a6112a363e703e383ae5b12c492485c39701 (patch) | |
| tree | fc22ab92565fb61a37a77f829a82fa9b8ea6497f /include/linux/nfs_fs.h | |
| parent | nfs: testing for null instead of ERR_PTR() (diff) | |
| download | linux-dev-71d0a6112a363e703e383ae5b12c492485c39701.tar.xz linux-dev-71d0a6112a363e703e383ae5b12c492485c39701.zip | |
NFS: Fix an unstable write data integrity race
Commit 2c61be0a9478258f77b66208a0c4b1f5f8161c3c (NFS: Ensure that the WRITE
and COMMIT RPC calls are always uninterruptible) exposed a race on file
close. In order to ensure correct close-to-open behaviour, we want to wait
for all outstanding background commit operations to complete.
This patch adds an inode flag that indicates if a commit operation is under
way, and provides a mechanism to allow ->write_inode() to wait for its
completion if this is a data integrity flush.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/nfs_fs.h')
| -rw-r--r-- | include/linux/nfs_fs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 1a0b85aa151e..07ce4609fe50 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -209,6 +209,7 @@ struct nfs_inode { #define NFS_INO_FLUSHING (4) /* inode is flushing out data */ #define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */ #define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */ +#define NFS_INO_COMMIT (7) /* inode is committing unstable writes */ static inline struct nfs_inode *NFS_I(const struct inode *inode) { |