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authorTrond Myklebust <Trond.Myklebust@netapp.com>2005-12-13 16:13:54 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2005-12-19 23:12:09 -0500
commit29884df0d89c1df0dec3449405bc41569bb44800 (patch)
treeb836dc3ece80a901d1b7a9e946bf0d51ec0c8c4f /fs/nfs/file.c
parentb079fa7baa86b47579f3f60f86d03d21c76159b8 (diff)
downloadop-kernel-dev-29884df0d89c1df0dec3449405bc41569bb44800.zip
op-kernel-dev-29884df0d89c1df0dec3449405bc41569bb44800.tar.gz
NFS: Fix another O_DIRECT race
Ensure we call unmap_mapping_range() and sync dirty pages to disk before doing an NFS direct write. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/file.c')
-rw-r--r--fs/nfs/file.c23
1 files changed, 4 insertions, 19 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 57d3e77..eb5cd4c 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -433,11 +433,7 @@ static int do_unlk(struct file *filp, int cmd, struct file_lock *fl)
* Flush all pending writes before doing anything
* with locks..
*/
- filemap_fdatawrite(filp->f_mapping);
- down(&inode->i_sem);
- nfs_wb_all(inode);
- up(&inode->i_sem);
- filemap_fdatawait(filp->f_mapping);
+ nfs_sync_mapping(filp->f_mapping);
/* NOTE: special case
* If we're signalled while cleaning up locks on process exit, we
@@ -465,15 +461,8 @@ static int do_setlk(struct file *filp, int cmd, struct file_lock *fl)
* Flush all pending writes before doing anything
* with locks..
*/
- status = filemap_fdatawrite(filp->f_mapping);
- if (status == 0) {
- down(&inode->i_sem);
- status = nfs_wb_all(inode);
- up(&inode->i_sem);
- if (status == 0)
- status = filemap_fdatawait(filp->f_mapping);
- }
- if (status < 0)
+ status = nfs_sync_mapping(filp->f_mapping);
+ if (status != 0)
goto out;
lock_kernel();
@@ -497,11 +486,7 @@ static int do_setlk(struct file *filp, int cmd, struct file_lock *fl)
* Make sure we clear the cache whenever we try to get the lock.
* This makes locking act as a cache coherency point.
*/
- filemap_fdatawrite(filp->f_mapping);
- down(&inode->i_sem);
- nfs_wb_all(inode); /* we may have slept */
- up(&inode->i_sem);
- filemap_fdatawait(filp->f_mapping);
+ nfs_sync_mapping(filp->f_mapping);
nfs_zap_caches(inode);
out:
rpc_clnt_sigunmask(NFS_CLIENT(inode), &oldset);
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