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Fix computation of SKB size for quota messages

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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 <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Kara 2007-12-22 14:03:25 -08:00 committed by Linus Torvalds
parent b88629060b
commit 22dd483721
1 changed files with 4 additions and 5 deletions
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9
fs/dquot.c
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@ -895,9 +895,6 @@ 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 +911,13 @@ 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 +958,7 @@ 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);
}