Hello, attached patch fixes computation of buffer size needed for quota netlink messages. Otherwise we were getting errors on some architectures. Andrew, please apply. Thanks.
Honza -- Jan Kara <[EMAIL PROTECTED]> SUSE Labs, CR --- Fix computation of size of skb needed for quota message. We should use netlink provided functions and not just an ad-hoc number. Also don't print the return value from nla_put_foo() as it is always -1. Signed-off-by: Jan Kara <[EMAIL PROTECTED]> diff --git a/fs/dquot.c b/fs/dquot.c index 686ab63..cee7c6f 100644 --- a/fs/dquot.c +++ b/fs/dquot.c @@ -895,9 +903,6 @@ out_lock: #ifdef CONFIG_QUOTA_NETLINK_INTERFACE -/* Size of quota netlink message - actually an upperbound for buffer size */ -#define QUOTA_NL_MSG_SIZE 32 - /* Netlink family structure for quota */ static struct genl_family quota_genl_family = { .id = GENL_ID_GENERATE, @@ -914,11 +919,13 @@ static void send_warning(const struct dquot *dquot, const char warntype) struct sk_buff *skb; void *msg_head; int ret; + int msg_size = 4 * nla_total_size(sizeof(u32)) + + 2 * nla_total_size(sizeof(u64)); /* We have to allocate using GFP_NOFS as we are called from a * filesystem performing write and thus further recursion into * the fs to free some data could cause deadlocks. */ - skb = genlmsg_new(QUOTA_NL_MSG_SIZE, GFP_NOFS); + skb = genlmsg_new(msg_size, GFP_NOFS); if (!skb) { printk(KERN_ERR "VFS: Not enough memory to send quota warning.\n"); @@ -959,7 +966,7 @@ static void send_warning(const struct dquot *dquot, const char warntype) "VFS: Failed to send notification message: %d\n", ret); return; attr_err_out: - printk(KERN_ERR "VFS: Failed to compose quota message: %d\n", ret); + printk(KERN_ERR "VFS: Not enough space to compose quota message!\n"); err_out: kfree_skb(skb); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/