From: Christoph Hellwig <hch@infradead.org>
To: David Chinner <dgc@sgi.com>
Cc: xfs-dev <xfs-dev@sgi.com>, xfs-oss <xfs@oss.sgi.com>
Subject: Re: Review: Factor some common freelist checks
Date: Thu, 9 Aug 2007 01:53:50 +0100 [thread overview]
Message-ID: <20070809005350.GA11164@infradead.org> (raw)
In-Reply-To: <20070808234043.GT12413810@sgi.com>
On Thu, Aug 09, 2007 at 09:40:44AM +1000, David Chinner wrote:
> Suggested by Tim - don't duplicate the code used to check
> the longest available extent on the freelist.
>
> [we've got to clean up this header include mess.]
Just move it out of line, it'squite large anyway if you look at
all the branches (and there's two more hidden behing XFS_MIN_FREELIST_PAG).
Also I'd suggest returning longest from the function instead of using a
pointer to return the value.
in the end we'd have something like:
xfs_extlen_t
xfs_alloc_min_freelist(
xfs_mount_t *mp,
xfs_perag_t *pag)
{
xfs_extlen_t need, delta;
need = XFS_MIN_FREELIST_PAG(pag, mp);
if (need > pag->pagf_flcount)
delta = need - pag->pagf_flcount;
else
delta = 0;
if (pag->pagf_longest > delta)
return pag->pagf_longest - delta;
return pag->pagf_flcount > 0 || pag->pagf_longest > 0;
}
>
> Signed-off-by: Dave Chinner <dgc@sgi.com>
>
> ---
> fs/xfs/dmapi/xfs_dm.c | 2 +-
> fs/xfs/dmapi/xfs_dm_bhv.c | 2 +-
> fs/xfs/dmapi/xfs_dm_fsops.c | 2 +-
> fs/xfs/linux-2.6/xfs_ioctl.c | 2 +-
> fs/xfs/linux-2.6/xfs_iops.c | 2 +-
> fs/xfs/linux-2.6/xfs_ksyms.c | 2 +-
> fs/xfs/linux-2.6/xfs_lrw.c | 2 +-
> fs/xfs/linux-2.6/xfs_super.c | 2 +-
> fs/xfs/linux-2.6/xfs_vfs.c | 2 +-
> fs/xfs/quota/xfs_dquot.c | 2 +-
> fs/xfs/quota/xfs_dquot_item.c | 2 +-
> fs/xfs/quota/xfs_qm.c | 2 +-
> fs/xfs/quota/xfs_qm_bhv.c | 2 +-
> fs/xfs/quota/xfs_qm_ksyms.c | 2 +-
> fs/xfs/quota/xfs_qm_stats.c | 2 +-
> fs/xfs/quota/xfs_qm_syscalls.c | 2 +-
> fs/xfs/quota/xfs_trans_dquot.c | 2 +-
> fs/xfs/xfs_alloc.c | 7 ++-----
> fs/xfs/xfs_alloc.h | 19 +++++++++++++++++--
> fs/xfs/xfs_bmap.c | 12 ++----------
> fs/xfs/xfs_filestream.c | 9 ++-------
> fs/xfs/xfs_iomap.c | 2 +-
> 22 files changed, 41 insertions(+), 42 deletions(-)
>
> Index: 2.6.x-xfs-new/fs/xfs/xfs_alloc.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/xfs_alloc.c 2007-06-25 13:56:20.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/xfs_alloc.c 2007-06-25 14:06:05.123181552 +1000
> @@ -1858,15 +1858,12 @@ xfs_alloc_fix_freelist(
> }
>
> if (!(flags & XFS_ALLOC_FLAG_FREEING)) {
> - need = XFS_MIN_FREELIST_PAG(pag, mp);
> - delta = need > pag->pagf_flcount ? need - pag->pagf_flcount : 0;
> /*
> * If it looks like there isn't a long enough extent, or enough
> * total blocks, reject it.
> */
> - longest = (pag->pagf_longest > delta) ?
> - (pag->pagf_longest - delta) :
> - (pag->pagf_flcount > 0 || pag->pagf_longest > 0);
> + need = XFS_MIN_FREELIST_PAG(pag, mp);
> + xfs_alloc_min_freelist(mp, pag, &longest);
> if ((args->minlen + args->alignment + args->minalignslop - 1) >
> longest ||
> ((int)(pag->pagf_freeblks + pag->pagf_flcount -
> Index: 2.6.x-xfs-new/fs/xfs/xfs_alloc.h
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/xfs_alloc.h 2007-05-22 19:04:51.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/xfs_alloc.h 2007-06-25 14:14:13.627226544 +1000
> @@ -19,8 +19,6 @@
> #define __XFS_ALLOC_H__
>
> struct xfs_buf;
> -struct xfs_mount;
> -struct xfs_perag;
> struct xfs_trans;
>
> /*
> @@ -207,6 +205,23 @@ xfs_alloc_clear_busy(xfs_trans_t *tp,
> xfs_agnumber_t ag,
> int idx);
>
> +/*
> + * Determine the longest free extent available in the AG supplied
> + */
> +STATIC_INLINE void
> +xfs_alloc_min_freelist(
> + xfs_mount_t *mp,
> + xfs_perag_t *pag,
> + xfs_extlen_t *longest)
> +{
> + xfs_extlen_t need, delta;
> +
> + need = XFS_MIN_FREELIST_PAG(pag, mp);
> + delta = need > pag->pagf_flcount ? need - pag->pagf_flcount : 0;
> + *longest = (pag->pagf_longest > delta) ?
> + (pag->pagf_longest - delta) :
> + (pag->pagf_flcount > 0 || pag->pagf_longest > 0);
> +}
>
> #endif /* __KERNEL__ */
>
> Index: 2.6.x-xfs-new/fs/xfs/xfs_bmap.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/xfs_bmap.c 2007-06-25 13:56:11.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/xfs_bmap.c 2007-06-25 14:11:19.905965882 +1000
> @@ -2703,9 +2703,6 @@ xfs_bmap_btalloc(
> xfs_agnumber_t startag;
> xfs_alloc_arg_t args;
> xfs_extlen_t blen;
> - xfs_extlen_t delta;
> - xfs_extlen_t longest;
> - xfs_extlen_t need;
> xfs_extlen_t nextminlen = 0;
> xfs_perag_t *pag;
> int nullfb; /* true if ap->firstblock isn't set */
> @@ -2787,13 +2784,8 @@ xfs_bmap_btalloc(
> * See xfs_alloc_fix_freelist...
> */
> if (pag->pagf_init) {
> - need = XFS_MIN_FREELIST_PAG(pag, mp);
> - delta = need > pag->pagf_flcount ?
> - need - pag->pagf_flcount : 0;
> - longest = (pag->pagf_longest > delta) ?
> - (pag->pagf_longest - delta) :
> - (pag->pagf_flcount > 0 ||
> - pag->pagf_longest > 0);
> + xfs_extlen_t longest;
> + xfs_alloc_min_freelist(mp, pag, &longest);
> if (blen < longest)
> blen = longest;
> } else
> Index: 2.6.x-xfs-new/fs/xfs/xfs_filestream.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/xfs_filestream.c 2007-06-22 18:07:15.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/xfs_filestream.c 2007-06-25 14:11:11.355085273 +1000
> @@ -140,7 +140,7 @@ _xfs_filestream_pick_ag(
> xfs_extlen_t minlen)
> {
> int err, trylock, nscan;
> - xfs_extlen_t delta, longest, need, free, minfree, maxfree = 0;
> + xfs_extlen_t longest, free, minfree, maxfree = 0;
> xfs_agnumber_t ag, max_ag = NULLAGNUMBER;
> struct xfs_perag *pag;
>
> @@ -186,12 +186,7 @@ _xfs_filestream_pick_ag(
> goto next_ag;
> }
>
> - need = XFS_MIN_FREELIST_PAG(pag, mp);
> - delta = need > pag->pagf_flcount ? need - pag->pagf_flcount : 0;
> - longest = (pag->pagf_longest > delta) ?
> - (pag->pagf_longest - delta) :
> - (pag->pagf_flcount > 0 || pag->pagf_longest > 0);
> -
> + xfs_alloc_min_freelist(mp, pag, &longest);
> if (((minlen && longest >= minlen) ||
> (!minlen && pag->pagf_freeblks >= minfree)) &&
> (!pag->pagf_metadata || !(flags & XFS_PICK_USERDATA) ||
> Index: 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_ioctl.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/linux-2.6/xfs_ioctl.c 2007-06-20 17:59:36.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_ioctl.c 2007-06-25 14:13:21.298075718 +1000
> @@ -24,9 +24,9 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_iops.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/linux-2.6/xfs_iops.c 2007-05-29 16:18:03.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_iops.c 2007-06-25 14:13:02.976473863 +1000
> @@ -24,10 +24,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_lrw.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/linux-2.6/xfs_lrw.c 2007-06-20 17:53:36.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_lrw.c 2007-06-25 14:14:30.457023840 +1000
> @@ -24,10 +24,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_super.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/linux-2.6/xfs_super.c 2007-06-20 17:53:35.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_super.c 2007-06-25 14:14:43.087370791 +1000
> @@ -25,10 +25,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_vfs.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/linux-2.6/xfs_vfs.c 2007-01-16 10:54:16.000000000 +1100
> +++ 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_vfs.c 2007-06-25 14:14:56.941557595 +1000
> @@ -25,9 +25,9 @@
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> #include "xfs_imap.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_quota.h"
>
> int
> Index: 2.6.x-xfs-new/fs/xfs/xfs_iomap.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/xfs_iomap.c 2007-06-08 21:36:26.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/xfs_iomap.c 2007-06-25 14:12:09.347493741 +1000
> @@ -24,10 +24,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/dmapi/xfs_dm.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/dmapi/xfs_dm.c 2007-06-08 21:36:26.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/dmapi/xfs_dm.c 2007-06-25 14:19:43.936003898 +1000
> @@ -26,9 +26,9 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_da_btree.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/dmapi/xfs_dm_bhv.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/dmapi/xfs_dm_bhv.c 2007-01-16 10:54:14.000000000 +1100
> +++ 2.6.x-xfs-new/fs/xfs/dmapi/xfs_dm_bhv.c 2007-06-25 14:16:45.923295350 +1000
> @@ -26,9 +26,9 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/dmapi/xfs_dm_fsops.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/dmapi/xfs_dm_fsops.c 2007-01-16 10:54:14.000000000 +1100
> +++ 2.6.x-xfs-new/fs/xfs/dmapi/xfs_dm_fsops.c 2007-06-25 14:18:12.523963285 +1000
> @@ -26,9 +26,9 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_ksyms.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/linux-2.6/xfs_ksyms.c 2007-06-25 13:56:20.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_ksyms.c 2007-06-25 14:15:49.646659958 +1000
> @@ -27,10 +27,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_da_btree.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/quota/xfs_dquot.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/quota/xfs_dquot.c 2007-06-25 13:56:20.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/quota/xfs_dquot.c 2007-06-25 14:19:04.513160782 +1000
> @@ -24,10 +24,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/quota/xfs_dquot_item.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/quota/xfs_dquot_item.c 2007-06-25 13:56:20.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/quota/xfs_dquot_item.c 2007-06-25 14:19:21.906884992 +1000
> @@ -24,10 +24,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/quota/xfs_qm.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/quota/xfs_qm.c 2007-06-25 13:56:20.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/quota/xfs_qm.c 2007-06-25 14:21:29.450325544 +1000
> @@ -25,10 +25,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/quota/xfs_qm_bhv.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/quota/xfs_qm_bhv.c 2007-02-07 13:24:32.000000000 +1100
> +++ 2.6.x-xfs-new/fs/xfs/quota/xfs_qm_bhv.c 2007-06-25 14:20:21.775098823 +1000
> @@ -25,10 +25,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/quota/xfs_qm_ksyms.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/quota/xfs_qm_ksyms.c 2007-01-16 10:54:16.000000000 +1100
> +++ 2.6.x-xfs-new/fs/xfs/quota/xfs_qm_ksyms.c 2007-06-25 14:21:01.018011537 +1000
> @@ -24,10 +24,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/quota/xfs_qm_stats.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/quota/xfs_qm_stats.c 2007-02-07 13:24:32.000000000 +1100
> +++ 2.6.x-xfs-new/fs/xfs/quota/xfs_qm_stats.c 2007-06-25 14:21:14.844219110 +1000
> @@ -24,10 +24,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/quota/xfs_qm_syscalls.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/quota/xfs_qm_syscalls.c 2007-03-29 19:03:30.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/quota/xfs_qm_syscalls.c 2007-06-25 14:18:28.637854830 +1000
> @@ -27,10 +27,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
> Index: 2.6.x-xfs-new/fs/xfs/quota/xfs_trans_dquot.c
> ===================================================================
> --- 2.6.x-xfs-new.orig/fs/xfs/quota/xfs_trans_dquot.c 2007-03-29 19:03:30.000000000 +1000
> +++ 2.6.x-xfs-new/fs/xfs/quota/xfs_trans_dquot.c 2007-06-25 14:18:48.239290090 +1000
> @@ -24,10 +24,10 @@
> #include "xfs_sb.h"
> #include "xfs_ag.h"
> #include "xfs_dir2.h"
> -#include "xfs_alloc.h"
> #include "xfs_dmapi.h"
> #include "xfs_quota.h"
> #include "xfs_mount.h"
> +#include "xfs_alloc.h"
> #include "xfs_bmap_btree.h"
> #include "xfs_alloc_btree.h"
> #include "xfs_ialloc_btree.h"
>
>
---end quoted text---
prev parent reply other threads:[~2007-08-09 1:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-08 23:40 Review: Factor some common freelist checks David Chinner
2007-08-09 0:53 ` Christoph Hellwig [this message]
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