[10/26] xfs: export the geometry of realtime groups to userspace

Message ID	172437088693.60592.13218743269576141133.stgit@frogsfrogsfrogs (mailing list archive)
State	Not Applicable, archived
Headers	show Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E660C33D8 for <linux-xfs@vger.kernel.org>; Fri, 23 Aug 2024 00:23:47 +0000 (UTC) Date: Thu, 22 Aug 2024 17:23:46 -0700 Subject: [PATCH 10/26] xfs: export the geometry of realtime groups to userspace From: "Darrick J. Wong" <djwong@kernel.org> To: djwong@kernel.org Cc: hch@lst.de, linux-xfs@vger.kernel.org Message-ID: <172437088693.60592.13218743269576141133.stgit@frogsfrogsfrogs> In-Reply-To: <172437088439.60592.14498225725916348568.stgit@frogsfrogsfrogs> References: <172437088439.60592.14498225725916348568.stgit@frogsfrogsfrogs> User-Agent: StGit/0.19 Precedence: bulk MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit
Series	[01/26] xfs: define the format of rt groups \| expand [01/26] xfs: define the format of rt groups [02/26] xfs: check the realtime superblock at mount time [03/26] xfs: update realtime super every time we update the primary fs super [04/26] xfs: export realtime group geometry via XFS_FSOP_GEOM [05/26] xfs: check that rtblock extents do not break rtsupers or rtgroups [06/26] xfs: add a helper to prevent bmap merges across rtgroup boundaries [07/26] xfs: add frextents to the lazysbcounters when rtgroups enabled [08/26] xfs: convert sick_map loops to use ARRAY_SIZE [09/26] xfs: record rt group metadata errors in the health system [10/26] xfs: export the geometry of realtime groups to userspace [11/26] xfs: add block headers to realtime bitmap and summary blocks [12/26] xfs: encode the rtbitmap in big endian format [13/26] xfs: encode the rtsummary in big endian format [14/26] xfs: grow the realtime section when realtime groups are enabled [15/26] xfs: store rtgroup information with a bmap intent [16/26] xfs: force swapext to a realtime file to use the file content exchange ioctl [17/26] xfs: support logging EFIs for realtime extents [18/26] xfs: support error injection when freeing rt extents [19/26] xfs: use realtime EFI to free extents when rtgroups are enabled [20/26] xfs: don't merge ioends across RTGs [21/26] xfs: make the RT allocator rtgroup aware [22/26] xfs: don't coalesce file mappings that cross rtgroup boundaries in scrub [23/26] xfs: scrub the realtime group superblock [24/26] xfs: repair realtime group superblock [25/26] xfs: scrub metadir paths for rtgroup metadata [26/26] xfs: mask off the rtbitmap and summary inodes when metadir in use

diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index 57819fea064e7..2dacc19723c37 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -971,6 +971,22 @@ struct xfs_getparents_by_handle { struct xfs_getparents gph_request; }; +/* + * Output for XFS_IOC_RTGROUP_GEOMETRY + */ +struct xfs_rtgroup_geometry { + __u32 rg_number; /* i/o: rtgroup number */ + __u32 rg_length; /* o: length in blocks */ + __u32 rg_capacity; /* o: usable capacity in blocks */ + __u32 rg_sick; /* o: sick things in ag */ + __u32 rg_checked; /* o: checked metadata in ag */ + __u32 rg_flags; /* i/o: flags for this ag */ + __u64 rg_reserved[13]; /* o: zero */ +}; +#define XFS_RTGROUP_GEOM_SICK_SUPER (1U << 0) /* superblock */ +#define XFS_RTGROUP_GEOM_SICK_BITMAP (1U << 1) /* rtbitmap */ +#define XFS_RTGROUP_GEOM_SICK_SUMMARY (1U << 2) /* rtsummary */ + /* * ioctl commands that are used by Linux filesystems */ @@ -1009,6 +1025,7 @@ struct xfs_getparents_by_handle { #define XFS_IOC_GETPARENTS _IOWR('X', 62, struct xfs_getparents) #define XFS_IOC_GETPARENTS_BY_HANDLE _IOWR('X', 63, struct xfs_getparents_by_handle) #define XFS_IOC_SCRUBV_METADATA _IOWR('X', 64, struct xfs_scrub_vec_head) +#define XFS_IOC_RTGROUP_GEOMETRY _IOWR('X', 65, struct xfs_rtgroup_geometry) /* * ioctl commands that replace IRIX syssgi()'s diff --git a/fs/xfs/libxfs/xfs_health.h b/fs/xfs/libxfs/xfs_health.h index 7e77e2df9704a..2da64555434d5 100644 --- a/fs/xfs/libxfs/xfs_health.h +++ b/fs/xfs/libxfs/xfs_health.h @@ -288,6 +288,8 @@ xfs_inode_is_healthy(struct xfs_inode *ip) void xfs_fsop_geom_health(struct xfs_mount *mp, struct xfs_fsop_geom *geo); void xfs_ag_geom_health(struct xfs_perag *pag, struct xfs_ag_geometry *ageo); +void xfs_rtgroup_geom_health(struct xfs_rtgroup *rtg, + struct xfs_rtgroup_geometry *rgeo); void xfs_bulkstat_health(struct xfs_inode *ip, struct xfs_bulkstat *bs); #define xfs_metadata_is_sick(error) \ diff --git a/fs/xfs/libxfs/xfs_rtgroup.c b/fs/xfs/libxfs/xfs_rtgroup.c index 3cb08f5cfc260..df70015c68dd0 100644 --- a/fs/xfs/libxfs/xfs_rtgroup.c +++ b/fs/xfs/libxfs/xfs_rtgroup.c @@ -259,6 +259,21 @@ xfs_rtgroup_trans_join( } } +/* Retrieve rt group geometry. */ +int +xfs_rtgroup_get_geometry( + struct xfs_rtgroup *rtg, + struct xfs_rtgroup_geometry *rgeo) +{ + /* Fill out form. */ + memset(rgeo, 0, sizeof(*rgeo)); + rgeo->rg_number = rtg->rtg_rgno; + rgeo->rg_length = rtg->rtg_extents * rtg->rtg_mount->m_sb.sb_rextsize; + rgeo->rg_capacity = rgeo->rg_length; + xfs_rtgroup_geom_health(rtg, rgeo); + return 0; +} + #ifdef CONFIG_PROVE_LOCKING static struct lock_class_key xfs_rtginode_lock_class; diff --git a/fs/xfs/libxfs/xfs_rtgroup.h b/fs/xfs/libxfs/xfs_rtgroup.h index f51f1a7592775..4525aaa26efc2 100644 --- a/fs/xfs/libxfs/xfs_rtgroup.h +++ b/fs/xfs/libxfs/xfs_rtgroup.h @@ -249,6 +249,9 @@ void xfs_rtgroup_unlock(struct xfs_rtgroup *rtg, unsigned int rtglock_flags); void xfs_rtgroup_trans_join(struct xfs_trans *tp, struct xfs_rtgroup *rtg, unsigned int rtglock_flags); +int xfs_rtgroup_get_geometry(struct xfs_rtgroup *rtg, + struct xfs_rtgroup_geometry *rgeo); + int xfs_rtginode_mkdir_parent(struct xfs_mount *mp); int xfs_rtginode_load_parent(struct xfs_trans *tp); @@ -279,6 +282,7 @@ struct xfs_buf *xfs_log_rtsb(struct xfs_trans *tp, # define xfs_rtgroup_trans_join(tp, rtg, gf) ((void)0) # define xfs_update_rtsb(bp, sb_bp) ((void)0) # define xfs_log_rtsb(tp, sb_bp) (NULL) +# define xfs_rtgroup_get_geometry(rtg, rgeo) (-EOPNOTSUPP) #endif /* CONFIG_XFS_RT */ #endif /* __LIBXFS_RTGROUP_H */ diff --git a/fs/xfs/xfs_health.c b/fs/xfs/xfs_health.c index e94a5ede103d4..b3d288df4ca20 100644 --- a/fs/xfs/xfs_health.c +++ b/fs/xfs/xfs_health.c @@ -485,6 +485,34 @@ xfs_ag_geom_health( } } +static const struct ioctl_sick_map rtgroup_map[] = { + { XFS_SICK_RG_SUPER, XFS_RTGROUP_GEOM_SICK_SUPER }, + { XFS_SICK_RG_BITMAP, XFS_RTGROUP_GEOM_SICK_BITMAP }, + { XFS_SICK_RG_SUMMARY, XFS_RTGROUP_GEOM_SICK_SUMMARY }, +}; + +/* Fill out rtgroup geometry health info. */ +void +xfs_rtgroup_geom_health( + struct xfs_rtgroup *rtg, + struct xfs_rtgroup_geometry *rgeo) +{ + const struct ioctl_sick_map *m; + unsigned int sick; + unsigned int checked; + + rgeo->rg_sick = 0; + rgeo->rg_checked = 0; + + xfs_rtgroup_measure_sickness(rtg, &sick, &checked); + for_each_sick_map(rtgroup_map, m) { + if (checked & m->sick_mask) + rgeo->rg_checked |= m->ioctl_mask; + if (sick & m->sick_mask) + rgeo->rg_sick |= m->ioctl_mask; + } +} + static const struct ioctl_sick_map ino_map[] = { { XFS_SICK_INO_CORE, XFS_BS_SICK_INODE }, { XFS_SICK_INO_BMBTD, XFS_BS_SICK_BMBTD }, diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index c5526434f66fd..6f5cd06267873 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -40,6 +40,7 @@ #include "xfs_file.h" #include "xfs_exchrange.h" #include "xfs_handle.h" +#include "xfs_rtgroup.h" #include <linux/mount.h> #include <linux/fileattr.h> @@ -403,6 +404,36 @@ xfs_ioc_ag_geometry( return 0; } +STATIC int +xfs_ioc_rtgroup_geometry( + struct xfs_mount *mp, + void __user *arg) +{ + struct xfs_rtgroup *rtg; + struct xfs_rtgroup_geometry rgeo; + int error; + + if (copy_from_user(&rgeo, arg, sizeof(rgeo))) + return -EFAULT; + if (rgeo.rg_flags) + return -EINVAL; + if (memchr_inv(&rgeo.rg_reserved, 0, sizeof(rgeo.rg_reserved))) + return -EINVAL; + + rtg = xfs_rtgroup_get(mp, rgeo.rg_number); + if (!rtg) + return -EINVAL; + + error = xfs_rtgroup_get_geometry(rtg, &rgeo); + xfs_rtgroup_put(rtg); + if (error) + return error; + + if (copy_to_user(arg, &rgeo, sizeof(rgeo))) + return -EFAULT; + return 0; +} + /* * Linux extended inode flags interface. */ @@ -1225,6 +1256,8 @@ xfs_file_ioctl( case XFS_IOC_AG_GEOMETRY: return xfs_ioc_ag_geometry(mp, arg); + case XFS_IOC_RTGROUP_GEOMETRY: + return xfs_ioc_rtgroup_geometry(mp, arg); case XFS_IOC_GETVERSION: return put_user(inode->i_generation, (int __user *)arg);

[10/26] xfs: export the geometry of realtime groups to userspace

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