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| author |   Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> | 2010-05-10 18:08:28 +0000 |
|---|---|---|
| committer |   Eric Van Hensbergen <ericvh@gmail.com> | 2010-05-22 12:39:02 -0500 |
| commit | 6d27e64d74e14c1cf2b4af438d7e8a77017bd654 (patch) | |
| tree | 8b402bf58da42297521ec12bb024be566790cd6a /fs | |
| parent | 9p: cleanup: remove unneeded assignment (diff) | |
| download | linux-dev-6d27e64d74e14c1cf2b4af438d7e8a77017bd654.tar.xz linux-dev-6d27e64d74e14c1cf2b4af438d7e8a77017bd654.zip | |
9p: Optimize TCREATE by eliminating a redundant fid clone.
This patch removes a redundant fid clone on the directory fid and hence
reduces a server transaction while creating new filesystem object.
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/9p/vfs_inode.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index aecfc0c17945..0ba2db44e0b8 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -504,12 +504,11 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, ofid = NULL; fid = NULL; name = (char *) dentry->d_name.name; - dfid = v9fs_fid_clone(dentry->d_parent); + dfid = v9fs_fid_lookup(dentry->d_parent); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); - P9_DPRINTK(P9_DEBUG_VFS, "fid clone failed %d\n", err); - dfid = NULL; - goto error; + P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); + return ERR_PTR(err); } /* clone a fid to use for creation */ @@ -517,8 +516,7 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, if (IS_ERR(ofid)) { err = PTR_ERR(ofid); P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); - ofid = NULL; - goto error; + return ERR_PTR(err); } err = p9_client_fcreate(ofid, name, perm, mode, extension); @@ -528,14 +526,13 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, } /* now walk from the parent so we can get unopened fid */ - fid = p9_client_walk(dfid, 1, &name, 0); + fid = p9_client_walk(dfid, 1, &name, 1); if (IS_ERR(fid)) { err = PTR_ERR(fid); P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); fid = NULL; goto error; - } else - dfid = NULL; + } /* instantiate inode and assign the unopened fid to the dentry */ inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); @@ -558,9 +555,6 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, return ofid; error: - if (dfid) - p9_client_clunk(dfid); - if (ofid) p9_client_clunk(ofid); |