The patch titled
Subject: vfs: remove unused have_submounts() function
has been added to the -mm tree. Its filename is
vfs-remove-unused-have_submounts-function.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/vfs-remove-unused-have_submounts-function.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/vfs-remove-unused-have_submounts-function.patch
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------------------------------------------------------
From: Ian Kent <ikent@xxxxxxxxxx>
Subject: vfs: remove unused have_submounts() function
Now that path_has_submounts() has been added have_submounts() is no
longer used so remove it.
Link: http://lkml.kernel.org/r/20161011053428.27645.12310.stgit@xxxxxxxxxxxxxxxx
Signed-off-by: Ian Kent <raven@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Omar Sandoval <osandov@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/dcache.c | 33 ---------------------------------
include/linux/dcache.h | 1 -
2 files changed, 34 deletions(-)
diff -puN fs/dcache.c~vfs-remove-unused-have_submounts-function fs/dcache.c
--- a/fs/dcache.c~vfs-remove-unused-have_submounts-function
+++ a/fs/dcache.c
@@ -1273,39 +1273,6 @@ rename_retry:
goto again;
}
-/*
- * Search for at least 1 mount point in the dentry's subdirs.
- * We descend to the next level whenever the d_subdirs
- * list is non-empty and continue searching.
- */
-
-static enum d_walk_ret check_mount(void *data, struct dentry *dentry)
-{
- int *ret = data;
- if (d_mountpoint(dentry)) {
- *ret = 1;
- return D_WALK_QUIT;
- }
- return D_WALK_CONTINUE;
-}
-
-/**
- * have_submounts - check for mounts over a dentry
- * @parent: dentry to check.
- *
- * Return true if the parent or its subdirectories contain
- * a mount point
- */
-int have_submounts(struct dentry *parent)
-{
- int ret = 0;
-
- d_walk(parent, &ret, check_mount, NULL);
-
- return ret;
-}
-EXPORT_SYMBOL(have_submounts);
-
struct check_mount {
struct vfsmount *mnt;
unsigned int mounted;
diff -puN include/linux/dcache.h~vfs-remove-unused-have_submounts-function include/linux/dcache.h
--- a/include/linux/dcache.h~vfs-remove-unused-have_submounts-function
+++ a/include/linux/dcache.h
@@ -254,7 +254,6 @@ extern struct dentry *d_find_alias(struc
extern void d_prune_aliases(struct inode *);
/* test whether we have any submounts in a subdir tree */
-extern int have_submounts(struct dentry *);
extern int path_has_submounts(struct path *);
/*
_
Patches currently in -mm which might be from ikent@xxxxxxxxxx are
vfs-change-d_manage-to-take-a-struct-path.patch
vfs-add-path_is_mountpoint-helper.patch
vfs-add-path_has_submounts.patch
autofs-change-autofs4_expire_wait-to-take-struct-path.patch
autofs-change-autofs4_wait-to-take-struct-path.patch
autofs-use-path_is_mountpoint-to-fix-unreliable-d_mountpoint-checks.patch
autofs-use-path_has_submounts-to-fix-unreliable-have_submount-checks.patch
vfs-remove-unused-have_submounts-function.patch
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