| To: | Dave Chinner <david@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [PATCH 2/2] xfs: inode counter needs to use __percpu_counter_compare |
| From: | Christoph Hellwig <hch@xxxxxxxxxxxxx> |
| Date: | Tue, 5 May 2015 21:38:07 -0700 |
| Cc: | xfs@xxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx |
| Delivered-to: | xfs@xxxxxxxxxxx |
| In-reply-to: | <1430863299-9341-3-git-send-email-david@xxxxxxxxxxxxx> |
| References: | <1430863299-9341-1-git-send-email-david@xxxxxxxxxxxxx> <1430863299-9341-3-git-send-email-david@xxxxxxxxxxxxx> |
| User-agent: | Mutt/1.5.23 (2014-03-12) |
> diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
> index 02f827f..900f8ce 100644
> --- a/fs/xfs/xfs_mount.c
> +++ b/fs/xfs/xfs_mount.c
> @@ -1106,8 +1106,9 @@ xfs_mod_icount(
> int64_t delta)
> {
> /* deltas are +/-64, hence the large batch size of 128. */
> - __percpu_counter_add(&mp->m_icount, delta, 128);
> - if (percpu_counter_compare(&mp->m_icount, 0) < 0) {
> +#define _ICOUNT_BATCH 128
> + __percpu_counter_add(&mp->m_icount, delta, _ICOUNT_BATCH);
Can you give XFS_ prefixes to the atch sizes and move them otuside the
function? And fix up the instance in xfs_mod_fdblocks as well while
you're at it.
Otherwise looks fine.
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