The patch titled
replacement patch for pipefs and sockfs
has been added to the -mm tree. Its filename is
have-pipefs-ensure-i_ino-uniqueness-by-calling-iunique-and-hashing-the-inode-update.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: replacement patch for pipefs and sockfs
From: Jeff Layton <jlayton@xxxxxxxxxx>
pipefs declares its drop_inode function to be generic_delete_inode, which
obviates the need to have the fs make certain that i_nlink is properly set at
drop_inode time.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/pipe.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff -puN fs/pipe.c~have-pipefs-ensure-i_ino-uniqueness-by-calling-iunique-and-hashing-the-inode-update fs/pipe.c
--- a/fs/pipe.c~have-pipefs-ensure-i_ino-uniqueness-by-calling-iunique-and-hashing-the-inode-update
+++ a/fs/pipe.c
@@ -825,7 +825,6 @@ void free_pipe_info(struct inode *inode)
{
__free_pipe_info(inode->i_pipe);
inode->i_pipe = NULL;
- clear_nlink(inode);
}
static struct vfsmount *pipe_mnt __read_mostly;
@@ -1006,6 +1005,11 @@ int do_pipe(int *fd)
return error;
}
+static struct super_operations pipefs_sops = {
+ .statfs = simple_statfs,
+ .drop_inode = generic_delete_inode,
+};
+
/*
* pipefs should _never_ be mounted by userland - too much of security hassle,
* no real gain from having the whole whorehouse mounted. So we don't need
@@ -1016,7 +1020,7 @@ static int pipefs_get_sb(struct file_sys
int flags, const char *dev_name, void *data,
struct vfsmount *mnt)
{
- return get_sb_pseudo(fs_type, "pipe:", NULL, PIPEFS_MAGIC, mnt);
+ return get_sb_pseudo(fs_type, "pipe:", &pipefs_sops, PIPEFS_MAGIC, mnt);
}
static struct file_system_type pipe_fs_type = {
_
Patches currently in -mm which might be from jlayton@xxxxxxxxxx are
make-static-counters-in-new_inode-and-iunique-be-32-bits.patch
change-libfs-sb-creation-routines-to-avoid-collisions-with-their-root-inodes.patch
have-pipefs-ensure-i_ino-uniqueness-by-calling-iunique-and-hashing-the-inode.patch
have-pipefs-ensure-i_ino-uniqueness-by-calling-iunique-and-hashing-the-inode-update.patch
-
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