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Subject[PATCH 10/11] vfs: Remove d_drop calls from d_revalidate implementations

Now that d_invalidate always succeeds it is not longer necessary or
desirable to hard code d_drop calls into filesystem specific
d_revalidate implementations.

Remove the unnecessary d_drop calls and rely on d_invalidate
to drop the dentries. Using d_invalidate ensures that paths
to mount points will not be dropped.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
fs/ceph/dir.c | 1 -
fs/proc/base.c | 4 ----
fs/proc/fd.c | 2 --
3 files changed, 0 insertions(+), 7 deletions(-)

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 6da4df84ba30..ecd2402739e2 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1052,7 +1052,6 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
ceph_dentry_lru_touch(dentry);
} else {
ceph_dir_clear_complete(dir);
- d_drop(dentry);
}
iput(dir);
return valid;
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 51507065263b..aa62b37f1303 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1654,7 +1654,6 @@ int pid_revalidate(struct dentry *dentry, unsigned int flags)
put_task_struct(task);
return 1;
}
- d_drop(dentry);
return 0;
}

@@ -1791,9 +1790,6 @@ out:
put_task_struct(task);

out_notask:
- if (status <= 0)
- d_drop(dentry);
-
return status;
}

diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index 985ea881b5bc..7e4f04ccab31 100644
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -127,8 +127,6 @@ static int tid_fd_revalidate(struct dentry *dentry, unsigned int flags)
}
put_task_struct(task);
}
-
- d_drop(dentry);
return 0;
}

--
1.7.5.4


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