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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2011-02-28 17:04:05 +0530
committerEric Van Hensbergen <ericvh@gmail.com>2011-03-15 09:57:40 -0500
commitb271ec47bc11deacb6a0373ee29965ab628e74b2 (patch)
treef7f1e85136b98b2da6fcc53b3a04e23a4658285d /fs/9p
parentedd73cf544849c10e0fbc294ca2171f6c28b4093 (diff)
fs/9p: Update link count correctly on different file system operations
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')
-rw-r--r--fs/9p/vfs_inode.c32
-rw-r--r--fs/9p/vfs_inode_dotl.c2
2 files changed, 29 insertions, 5 deletions
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index fdc086d0744..334ad12a7bb 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -510,8 +510,17 @@ static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir)
return PTR_ERR(v9fid);
retval = p9_client_remove(v9fid);
- if (!retval)
- drop_nlink(file_inode);
+ if (!retval) {
+ /*
+ * directories on unlink should have zero
+ * link count
+ */
+ if (rmdir) {
+ clear_nlink(file_inode);
+ drop_nlink(dir);
+ } else
+ drop_nlink(file_inode);
+ }
return retval;
}
@@ -697,7 +706,8 @@ static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
fid = NULL;
- }
+ } else
+ inc_nlink(dir);
if (fid)
p9_client_clunk(fid);
@@ -809,6 +819,7 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
struct inode *old_inode;
+ struct inode *new_inode;
struct v9fs_session_info *v9ses;
struct p9_fid *oldfid;
struct p9_fid *olddirfid;
@@ -819,6 +830,7 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
P9_DPRINTK(P9_DEBUG_VFS, "\n");
retval = 0;
old_inode = old_dentry->d_inode;
+ new_inode = new_dentry->d_inode;
v9ses = v9fs_inode2v9ses(old_inode);
oldfid = v9fs_fid_lookup(old_dentry);
if (IS_ERR(oldfid))
@@ -859,9 +871,21 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
retval = p9_client_wstat(oldfid, &wstat);
clunk_newdir:
- if (!retval)
+ if (!retval) {
+ if (new_inode) {
+ if (S_ISDIR(new_inode->i_mode))
+ clear_nlink(new_inode);
+ else
+ drop_nlink(new_inode);
+ }
+ if (S_ISDIR(old_inode->i_mode)) {
+ if (!new_inode)
+ inc_nlink(new_dir);
+ drop_nlink(old_dir);
+ }
/* successful rename */
d_move(old_dentry, new_dentry);
+ }
up_write(&v9ses->rename_sem);
p9_client_clunk(newdirfid);
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index 984594123ab..c6d9677dcb6 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -371,7 +371,7 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
}
/* Now set the ACL based on the default value */
v9fs_set_create_acl(dentry, dacl, pacl);
-
+ inc_nlink(dir);
error:
if (fid)
p9_client_clunk(fid);