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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-02-28 12:33:57 +0100 |
|---|---|---|
| committer | Eric Van Hensbergen <ericvh@gmail.com> | 2011-03-15 15:57:37 +0100 |
| commit | 3cf387d780944305839f5b27c51f225444ba4d27 (patch) | |
| tree | ed4ef1d723ed3c7c280aadfcf397218004e49252 /fs/9p/vfs_file.c | |
| parent | fs/9p: Add read write helper function (diff) | |
| download | linux-3cf387d780944305839f5b27c51f225444ba4d27.tar.xz linux-3cf387d780944305839f5b27c51f225444ba4d27.zip | |
fs/9p: Add fid to inode in cached mode
The fid attached to inode will be opened O_RDWR mode and is used
for dirty page writeback only.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'fs/9p/vfs_file.c')
| -rw-r--r-- | fs/9p/vfs_file.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 6e1e8f43edac..e966f15f92ec 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -86,11 +86,30 @@ int v9fs_file_open(struct inode *inode, struct file *file) } file->private_data = fid; + if (v9ses->cache && !inode->i_private) { + /* + * clone a fid and add it to inode->i_private + * we do it during open time instead of + * page dirty time via write_begin/page_mkwrite + * because we want write after unlink usecase + * to work. + */ + fid = v9fs_writeback_fid(file->f_path.dentry); + if (IS_ERR(fid)) { + err = PTR_ERR(fid); + goto out_error; + } + inode->i_private = (void *) fid; + } #ifdef CONFIG_9P_FSCACHE if (v9ses->cache) v9fs_cache_inode_set_cookie(inode, file); #endif return 0; +out_error: + p9_client_clunk(file->private_data); + file->private_data = NULL; + return err; } /** |