The patch titled
fuse: locking fix for nlookup
has been removed from the -mm tree. Its filename is
fuse-locking-fix-for-nlookup.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: fuse: locking fix for nlookup
From: Miklos Szeredi <miklos@xxxxxxxxxx>
An inode could be returned by independent parallel lookups, in this case an
update of the lookup counter could be lost resulting in a memory leak in
userspace.
Signed-off-by: Miklos Szeredi <miklos@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/fuse/dir.c | 2 ++
fs/fuse/inode.c | 2 ++
2 files changed, 4 insertions(+)
diff -puN fs/fuse/dir.c~fuse-locking-fix-for-nlookup fs/fuse/dir.c
--- a/fs/fuse/dir.c~fuse-locking-fix-for-nlookup
+++ a/fs/fuse/dir.c
@@ -163,7 +163,9 @@ static int fuse_dentry_revalidate(struct
fuse_send_forget(fc, req, outarg.nodeid, 1);
return 0;
}
+ spin_lock(&fc->lock);
fi->nlookup ++;
+ spin_unlock(&fc->lock);
}
fuse_put_request(fc, req);
if (err || (outarg.attr.mode ^ inode->i_mode) & S_IFMT)
diff -puN fs/fuse/inode.c~fuse-locking-fix-for-nlookup fs/fuse/inode.c
--- a/fs/fuse/inode.c~fuse-locking-fix-for-nlookup
+++ a/fs/fuse/inode.c
@@ -195,7 +195,9 @@ struct inode *fuse_iget(struct super_blo
}
fi = get_fuse_inode(inode);
+ spin_lock(&fc->lock);
fi->nlookup ++;
+ spin_unlock(&fc->lock);
fuse_change_attributes(inode, attr);
return inode;
}
_
Patches currently in -mm which might be from miklos@xxxxxxxxxx are
origin.patch
fuse-update-userspace-interface-to-version-78.patch
fuse-minor-cleanup-in-fuse_dentry_revalidate.patch
fuse-add-support-for-block-device-based-filesystems.patch
fuse-add-blksize-option.patch
fuse-add-bmap-support.patch
fuse-add-destroy-operation.patch
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