From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay1.corp.sgi.com [137.38.102.111]) by oss.sgi.com (Postfix) with ESMTP id 16EF7803C for ; Fri, 6 Feb 2015 13:53:11 -0600 (CST) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay1.corp.sgi.com (Postfix) with ESMTP id A8D128F80A8 for ; Fri, 6 Feb 2015 11:53:11 -0800 (PST) Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by cuda.sgi.com with ESMTP id J5ZaSQrbGQMgrzjO (version=TLSv1 cipher=AES256-SHA bits=256 verify=NO) for ; Fri, 06 Feb 2015 11:53:07 -0800 (PST) Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t16Jr7Rj032275 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Fri, 6 Feb 2015 14:53:07 -0500 Received: from bfoster.bfoster ([10.18.41.237]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t16Jr6e3023185 for ; Fri, 6 Feb 2015 14:53:06 -0500 From: Brian Foster Subject: [PATCH v3 02/18] xfs: use sparse chunk alignment for min. inode allocation requirement Date: Fri, 6 Feb 2015 14:52:49 -0500 Message-Id: <1423252385-3063-3-git-send-email-bfoster@redhat.com> In-Reply-To: <1423252385-3063-1-git-send-email-bfoster@redhat.com> References: <1423252385-3063-1-git-send-email-bfoster@redhat.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com xfs_ialloc_ag_select() iterates through the allocation groups looking for free inodes or free space to determine whether to allow an inode allocation to proceed. If no free inodes are available, it assumes that an AG must have an extent longer than mp->m_ialloc_blks. Sparse inode chunk support currently allows for allocations smaller than the traditional inode chunk size specified in m_ialloc_blks. The current minimum sparse allocation is set in the superblock sb_spinoalignmt field at mkfs time. Create a new m_ialloc_min_blks field in xfs_mount and use this to represent the minimum supported allocation size for inode chunks. Initialize m_ialloc_min_blks at mount time based on whether sparse inodes are supported. Signed-off-by: Brian Foster --- fs/xfs/libxfs/xfs_ialloc.c | 2 +- fs/xfs/libxfs/xfs_sb.c | 5 +++++ fs/xfs/xfs_mount.h | 2 ++ 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c index 116ef1d..6f2153e 100644 --- a/fs/xfs/libxfs/xfs_ialloc.c +++ b/fs/xfs/libxfs/xfs_ialloc.c @@ -644,7 +644,7 @@ xfs_ialloc_ag_select( * if we fail allocation due to alignment issues then it is most * likely a real ENOSPC condition. */ - ineed = mp->m_ialloc_blks; + ineed = mp->m_ialloc_min_blks; if (flags && ineed > 1) ineed += xfs_ialloc_cluster_alignment(mp); longest = pag->pagf_longest; diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index eb22b5f..d6b4dbeb 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -697,6 +697,11 @@ xfs_sb_mount_common( mp->m_ialloc_inos = (int)MAX((__uint16_t)XFS_INODES_PER_CHUNK, sbp->sb_inopblock); mp->m_ialloc_blks = mp->m_ialloc_inos >> sbp->sb_inopblog; + + if (sbp->sb_spinoalignmt) + mp->m_ialloc_min_blks = sbp->sb_spinoalignmt; + else + mp->m_ialloc_min_blks = mp->m_ialloc_blks; } /* diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index a5b2ff8..97f17d5 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -136,6 +136,8 @@ typedef struct xfs_mount { __uint64_t m_flags; /* global mount flags */ int m_ialloc_inos; /* inodes in inode allocation */ int m_ialloc_blks; /* blocks in inode allocation */ + int m_ialloc_min_blks;/* min blocks in sparse inode + * allocation */ int m_inoalign_mask;/* mask sb_inoalignmt if used */ uint m_qflags; /* quota status flags */ struct xfs_trans_resv m_resv; /* precomputed res values */ -- 1.8.3.1 _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs