From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from aserp2130.oracle.com ([141.146.126.79]:46218 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729683AbfDARKo (ORCPT ); Mon, 1 Apr 2019 13:10:44 -0400 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x31H9HuK134141 for ; Mon, 1 Apr 2019 17:10:43 GMT Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by aserp2130.oracle.com with ESMTP id 2rhwyd0gkc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Mon, 01 Apr 2019 17:10:42 +0000 Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userv0021.oracle.com (8.14.4/8.14.4) with ESMTP id x31HAfaV004879 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Mon, 1 Apr 2019 17:10:41 GMT Received: from abhmp0011.oracle.com (abhmp0011.oracle.com [141.146.116.17]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x31HAfaE017713 for ; Mon, 1 Apr 2019 17:10:41 GMT Subject: [PATCH 05/10] xfs: add a new ioctl to describe allocation group geometry From: "Darrick J. Wong" Date: Mon, 01 Apr 2019 10:10:40 -0700 Message-ID: <155413864032.4966.11238815153270272807.stgit@magnolia> In-Reply-To: <155413860964.4966.6087725033542837255.stgit@magnolia> References: <155413860964.4966.6087725033542837255.stgit@magnolia> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: darrick.wong@oracle.com Cc: linux-xfs@vger.kernel.org From: Darrick J. Wong Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_ag.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/xfs/libxfs/xfs_ag.h | 2 ++ fs/xfs/libxfs/xfs_fs.h | 14 ++++++++++++++ fs/xfs/xfs_ioctl.c | 24 ++++++++++++++++++++++++ fs/xfs/xfs_ioctl32.c | 1 + 5 files changed, 89 insertions(+) diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c index 1ef8acf35e7d..1679e37fe28d 100644 --- a/fs/xfs/libxfs/xfs_ag.c +++ b/fs/xfs/libxfs/xfs_ag.c @@ -19,6 +19,7 @@ #include "xfs_ialloc.h" #include "xfs_rmap.h" #include "xfs_ag.h" +#include "xfs_ag_resv.h" static struct xfs_buf * xfs_get_aghdr_buf( @@ -461,3 +462,50 @@ xfs_ag_extend_space( len, &XFS_RMAP_OINFO_SKIP_UPDATE, XFS_AG_RESV_NONE); } + +/* Retrieve AG geometry. */ +int +xfs_ag_get_geometry( + struct xfs_mount *mp, + xfs_agnumber_t agno, + struct xfs_ag_geometry *ageo) +{ + struct xfs_buf *bp; + struct xfs_agi *agi; + struct xfs_agf *agf; + struct xfs_perag *pag; + unsigned int freeblks; + int error; + + memset(ageo, 0, sizeof(*ageo)); + + if (agno >= mp->m_sb.sb_agcount) + return -EINVAL; + + error = xfs_ialloc_read_agi(mp, NULL, agno, &bp); + if (error) + return error; + + agi = XFS_BUF_TO_AGI(bp); + ageo->ag_icount = be32_to_cpu(agi->agi_count); + ageo->ag_ifree = be32_to_cpu(agi->agi_freecount); + xfs_buf_relse(bp); + + error = xfs_alloc_read_agf(mp, NULL, agno, 0, &bp); + if (error) + return error; + + agf = XFS_BUF_TO_AGF(bp); + pag = xfs_perag_get(mp, agno); + ageo->ag_length = be32_to_cpu(agf->agf_length); + freeblks = pag->pagf_freeblks + + pag->pagf_flcount + + pag->pagf_btreeblks - + xfs_ag_resv_needed(pag, XFS_AG_RESV_NONE); + ageo->ag_freeblks = freeblks; + xfs_perag_put(pag); + xfs_buf_relse(bp); + + ageo->ag_number = agno; + return 0; +} diff --git a/fs/xfs/libxfs/xfs_ag.h b/fs/xfs/libxfs/xfs_ag.h index 412702e23f61..5166322807e7 100644 --- a/fs/xfs/libxfs/xfs_ag.h +++ b/fs/xfs/libxfs/xfs_ag.h @@ -26,5 +26,7 @@ struct aghdr_init_data { int xfs_ag_init_headers(struct xfs_mount *mp, struct aghdr_init_data *id); int xfs_ag_extend_space(struct xfs_mount *mp, struct xfs_trans *tp, struct aghdr_init_data *id, xfs_extlen_t len); +int xfs_ag_get_geometry(struct xfs_mount *mp, xfs_agnumber_t agno, + struct xfs_ag_geometry *ageo); #endif /* __LIBXFS_AG_H */ diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index 1dba751cde60..87226e00e7bd 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -266,6 +266,19 @@ typedef struct xfs_fsop_resblks { #define XFS_MIN_DBLOCKS(s) ((xfs_rfsblock_t)((s)->sb_agcount - 1) * \ (s)->sb_agblocks + XFS_MIN_AG_BLOCKS) +/* + * Output for XFS_IOC_AG_GEOMETRY + */ +struct xfs_ag_geometry { + __u32 ag_number; /* i/o: AG number */ + __u32 ag_length; /* o: length in blocks */ + __u32 ag_freeblks; /* o: free space */ + __u32 ag_icount; /* o: inodes allocated */ + __u32 ag_ifree; /* o: inodes free */ + __u32 ag_reserved32; /* o: zero */ + __u64 ag_reserved[5]; /* o: zero */ +}; + /* * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT */ @@ -619,6 +632,7 @@ struct xfs_scrub_metadata { #define XFS_IOC_FREE_EOFBLOCKS _IOR ('X', 58, struct xfs_fs_eofblocks) /* XFS_IOC_GETFSMAP ------ hoisted 59 */ #define XFS_IOC_SCRUB_METADATA _IOWR('X', 60, struct xfs_scrub_metadata) +#define XFS_IOC_AG_GEOMETRY _IOWR('X', 61, struct xfs_ag_geometry) /* * ioctl commands that replace IRIX syssgi()'s diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index 7fd8815633dc..b5918ce656bd 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -33,6 +33,7 @@ #include "xfs_fsmap.h" #include "scrub/xfs_scrub.h" #include "xfs_sb.h" +#include "xfs_ag.h" #include #include @@ -834,6 +835,26 @@ xfs_ioc_fsgeometry( return 0; } +STATIC int +xfs_ioc_ag_geometry( + struct xfs_mount *mp, + void __user *arg) +{ + struct xfs_ag_geometry ageo; + int error; + + if (copy_from_user(&ageo, arg, sizeof(ageo))) + return -EFAULT; + + error = xfs_ag_get_geometry(mp, ageo.ag_number, &ageo); + if (error) + return error; + + if (copy_to_user(arg, &ageo, sizeof(ageo))) + return -EFAULT; + return 0; +} + /* * Linux extended inode flags interface. */ @@ -1960,6 +1981,9 @@ xfs_file_ioctl( case XFS_IOC_FSGEOMETRY: return xfs_ioc_fsgeometry(mp, arg); + case XFS_IOC_AG_GEOMETRY: + return xfs_ioc_ag_geometry(mp, arg); + case XFS_IOC_GETVERSION: return put_user(inode->i_generation, (int __user *)arg); diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c index 323cfd4b15dc..28d2110dd871 100644 --- a/fs/xfs/xfs_ioctl32.c +++ b/fs/xfs/xfs_ioctl32.c @@ -563,6 +563,7 @@ xfs_file_compat_ioctl( case XFS_IOC_DIOINFO: case XFS_IOC_FSGEOMETRY_V2: case XFS_IOC_FSGEOMETRY: + case XFS_IOC_AG_GEOMETRY: case XFS_IOC_FSGETXATTR: case XFS_IOC_FSSETXATTR: case XFS_IOC_FSGETXATTRA: