From: Miklos Szeredi Date: Tue, 6 Sep 2005 22:17:18 +0000 (-0700) Subject: [PATCH] proc: link count fix X-Git-Tag: 2.1b_release~40339 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2b579beec255d6589fabe51b60933d723630bcd4;p=platform%2Fkernel%2Fkernel-mfld-blackbay.git [PATCH] proc: link count fix This patch fixes bug titled "sunrpc as module and bad proc/sys link count" reported by Jiri Slaby. The problem was, that only proc_dir_entry->nlink was updated and the corresponding inode->i_nlink was not. The fix is to implement the inode->getattr() method, and update i_nlink (if necessary). A quick audit of proc code shows that no other attribute changes after creation. Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/fs/proc/generic.c b/fs/proc/generic.c index abe8920..8a8c344 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -249,6 +249,18 @@ out: return error; } +static int proc_getattr(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat) +{ + struct inode *inode = dentry->d_inode; + struct proc_dir_entry *de = PROC_I(inode)->pde; + if (de && de->nlink) + inode->i_nlink = de->nlink; + + generic_fillattr(inode, stat); + return 0; +} + static struct inode_operations proc_file_inode_operations = { .setattr = proc_notify_change, }; @@ -475,6 +487,7 @@ static struct file_operations proc_dir_operations = { */ static struct inode_operations proc_dir_inode_operations = { .lookup = proc_lookup, + .getattr = proc_getattr, .setattr = proc_notify_change, };