From patchwork Thu Oct 17 19:04:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 13840705 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 DBF511DED44 for ; Thu, 17 Oct 2024 19:04:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729191841; cv=none; b=duJdXti1LeGjM2wfV03XQkzHK8dgybNybk3bLVI2XJ6qpr6wGaXz20GKba7S0wGpiL3Lo2oMxkvpgX/uOcHbbkYYEpiDwaa4yQlSNrZCk0NdBBqny84tWbowdBri8uPqqoShF/gL9CTXUYsCcWnMnF94wc1cYMrfWjmAf+A7M9U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729191841; c=relaxed/simple; bh=8HDDYUvS56kuffQrPOfbZDZutHnDERMp2k/H/sLoMCA=; h=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=p8RCRXKwq2B9TI+K2gIduGgkDnW6YHFC7WDZ+DI7y9nesmwurqZKOJBHn0JQAEKYjCYedgzGrVnjhSgv2VcP10DjyvhbP7+FfYw3ZygEdsgf0/UMlKO71HD2YngUC2f1wbItPR/SR2avkoNRNMfGOMbNtCoaxlW2P5yeAwNmou4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=f1k88/ix; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="f1k88/ix" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6EA62C4CEC3; Thu, 17 Oct 2024 19:04:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729191841; bh=8HDDYUvS56kuffQrPOfbZDZutHnDERMp2k/H/sLoMCA=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=f1k88/ixTZWbTcdLnaOB5rscXX599rztRKmfAWulMZ2nQeOz8LYFnKJxxJ2eYDYX8 5U0rKHpT2BmHbm9QDQIXv5gkpca9geTO8neKCkUqbXE1E0c9j2250cCwz5FQpY/Pi5 zCmHbvWDp7LoxLLr3DT2l0BggEgiq3PHo+09uhXjKbxHztHUBtETUiOM3ecQISGuDt Luu/JzXnzJYdqVRRC28z7do94yEfnGg8Eer6RvPU5j11YysGbMalqPw+PMQLEADHZR ARqNbQ24luFNhOsBO9DrgtN4CmdwtGCVqF9wbFMxQTzP2C2w6ZG/DPpaZpaJ249wIV OV/+R06eotWhQ== Date: Thu, 17 Oct 2024 12:04:00 -0700 Subject: [PATCH 01/34] xfs: define the format of rt groups From: "Darrick J. Wong" To: djwong@kernel.org Cc: linux-xfs@vger.kernel.org, hch@lst.de Message-ID: <172919071681.3453179.2361469423447590163.stgit@frogsfrogsfrogs> In-Reply-To: <172919071571.3453179.15753475627202483418.stgit@frogsfrogsfrogs> References: <172919071571.3453179.15753475627202483418.stgit@frogsfrogsfrogs> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Darrick J. Wong Define the ondisk format of realtime group metadata, and a superblock for realtime volumes. rt supers are conditionally enabled by a predicate function so that they can be disabled if we ever implement zoned storage support for the realtime volume. For rt group enabled file systems there is a separate bitmap and summary file for each group and thus the number of bitmap and summary blocks needs to be calculated differently. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig --- fs/xfs/libxfs/xfs_format.h | 42 +++++++++++++++++- fs/xfs/libxfs/xfs_ondisk.h | 3 + fs/xfs/libxfs/xfs_rtbitmap.c | 20 +++++++- fs/xfs/libxfs/xfs_rtgroup.c | 82 ++++++++++++++++++++++++++++++++++ fs/xfs/libxfs/xfs_sb.c | 100 +++++++++++++++++++++++++++++++++++++----- fs/xfs/libxfs/xfs_shared.h | 1 fs/xfs/xfs_mount.h | 6 ++- fs/xfs/xfs_rtalloc.c | 30 +++++++++++-- 8 files changed, 262 insertions(+), 22 deletions(-) diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 867060d60e8583..3cf044a2d5f2a9 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -265,8 +265,15 @@ struct xfs_dsb { uuid_t sb_meta_uuid; /* metadata file system unique id */ __be64 sb_metadirino; /* metadata directory tree root */ + __be32 sb_rgcount; /* # of realtime groups */ + __be32 sb_rgextents; /* size of rtgroup in rtx */ - /* must be padded to 64 bit alignment */ + /* + * The size of this structure must be padded to 64 bit alignment. + * + * NOTE: Don't forget to update secondary_sb_whack in xfs_repair when + * adding new fields here. + */ }; #define XFS_SB_CRC_OFF offsetof(struct xfs_dsb, sb_crc) @@ -716,6 +723,39 @@ union xfs_suminfo_raw { __u32 old; }; +/* + * Realtime allocation groups break the rt section into multiple pieces that + * could be locked independently. Realtime block group numbers are 32-bit + * quantities. Block numbers within a group are also 32-bit quantities, but + * the upper bit must never be set. rtgroup 0 might have a superblock in it, + * so the minimum size of an rtgroup is 2 rtx. + */ +#define XFS_MAX_RGBLOCKS ((xfs_rgblock_t)(1U << 31) - 1) +#define XFS_MIN_RGEXTENTS ((xfs_rtxlen_t)2) +#define XFS_MAX_RGNUMBER ((xfs_rgnumber_t)(-1U)) + +#define XFS_RTSB_MAGIC 0x46726F67 /* 'Frog' */ + +/* + * Realtime superblock - on disk version. Must be padded to 64 bit alignment. + * The first block of the realtime volume contains this superblock. + */ +struct xfs_rtsb { + __be32 rsb_magicnum; /* magic number == XFS_RTSB_MAGIC */ + __le32 rsb_crc; /* superblock crc */ + + __be32 rsb_pad; /* zero */ + unsigned char rsb_fname[XFSLABEL_MAX]; /* file system name */ + + uuid_t rsb_uuid; /* user-visible file system unique id */ + uuid_t rsb_meta_uuid; /* metadata file system unique id */ + + /* must be padded to 64 bit alignment */ +}; + +#define XFS_RTSB_CRC_OFF offsetof(struct xfs_rtsb, rsb_crc) +#define XFS_RTSB_DADDR ((xfs_daddr_t)0) /* daddr in rt section */ + /* * XFS Timestamps * ============== diff --git a/fs/xfs/libxfs/xfs_ondisk.h b/fs/xfs/libxfs/xfs_ondisk.h index 8bca86e350fdc1..38b314113d8f24 100644 --- a/fs/xfs/libxfs/xfs_ondisk.h +++ b/fs/xfs/libxfs/xfs_ondisk.h @@ -37,7 +37,7 @@ xfs_check_ondisk_structs(void) XFS_CHECK_STRUCT_SIZE(struct xfs_dinode, 176); XFS_CHECK_STRUCT_SIZE(struct xfs_disk_dquot, 104); XFS_CHECK_STRUCT_SIZE(struct xfs_dqblk, 136); - XFS_CHECK_STRUCT_SIZE(struct xfs_dsb, 272); + XFS_CHECK_STRUCT_SIZE(struct xfs_dsb, 280); XFS_CHECK_STRUCT_SIZE(struct xfs_dsymlink_hdr, 56); XFS_CHECK_STRUCT_SIZE(struct xfs_inobt_key, 4); XFS_CHECK_STRUCT_SIZE(struct xfs_inobt_rec, 16); @@ -53,6 +53,7 @@ xfs_check_ondisk_structs(void) XFS_CHECK_STRUCT_SIZE(xfs_inobt_ptr_t, 4); XFS_CHECK_STRUCT_SIZE(xfs_refcount_ptr_t, 4); XFS_CHECK_STRUCT_SIZE(xfs_rmap_ptr_t, 4); + XFS_CHECK_STRUCT_SIZE(struct xfs_rtsb, 56); /* dir/attr trees */ XFS_CHECK_STRUCT_SIZE(struct xfs_attr3_leaf_hdr, 80); diff --git a/fs/xfs/libxfs/xfs_rtbitmap.c b/fs/xfs/libxfs/xfs_rtbitmap.c index 54079edfe10feb..416bbcd92af2ad 100644 --- a/fs/xfs/libxfs/xfs_rtbitmap.c +++ b/fs/xfs/libxfs/xfs_rtbitmap.c @@ -1157,6 +1157,21 @@ xfs_rtbitmap_blockcount_len( return howmany_64(rtextents, NBBY * mp->m_sb.sb_blocksize); } +/* How many rt extents does each rtbitmap file track? */ +static inline xfs_rtbxlen_t +xfs_rtbitmap_bitcount( + struct xfs_mount *mp) +{ + if (!mp->m_sb.sb_rextents) + return 0; + + /* rtgroup size can be nonzero even if rextents is zero */ + if (xfs_has_rtgroups(mp)) + return mp->m_sb.sb_rgextents; + + return mp->m_sb.sb_rextents; +} + /* * Compute the number of rtbitmap blocks used for a given file system. */ @@ -1164,7 +1179,7 @@ xfs_filblks_t xfs_rtbitmap_blockcount( struct xfs_mount *mp) { - return xfs_rtbitmap_blockcount_len(mp, mp->m_sb.sb_rextents); + return xfs_rtbitmap_blockcount_len(mp, xfs_rtbitmap_bitcount(mp)); } /* @@ -1178,8 +1193,7 @@ xfs_rtsummary_blockcount( { unsigned long long rsumwords; - *rsumlevels = xfs_compute_rextslog(mp->m_sb.sb_rextents) + 1; - + *rsumlevels = xfs_compute_rextslog(xfs_rtbitmap_bitcount(mp)) + 1; rsumwords = xfs_rtbitmap_blockcount(mp) * (*rsumlevels); return XFS_B_TO_FSB(mp, rsumwords << XFS_WORDLOG); } diff --git a/fs/xfs/libxfs/xfs_rtgroup.c b/fs/xfs/libxfs/xfs_rtgroup.c index da29f41e51f1e1..9e2ca61559f45e 100644 --- a/fs/xfs/libxfs/xfs_rtgroup.c +++ b/fs/xfs/libxfs/xfs_rtgroup.c @@ -28,6 +28,7 @@ #include "xfs_trace.h" #include "xfs_inode.h" #include "xfs_icache.h" +#include "xfs_buf_item.h" #include "xfs_rtgroup.h" #include "xfs_rtbitmap.h" #include "xfs_metafile.h" @@ -482,3 +483,84 @@ xfs_rtginode_load_parent( return xfs_metadir_load(tp, mp->m_metadirip, "rtgroups", XFS_METAFILE_DIR, &mp->m_rtdirip); } + +/* Check superblock fields for a read or a write. */ +static xfs_failaddr_t +xfs_rtsb_verify_common( + struct xfs_buf *bp) +{ + struct xfs_rtsb *rsb = bp->b_addr; + + if (!xfs_verify_magic(bp, rsb->rsb_magicnum)) + return __this_address; + if (rsb->rsb_pad) + return __this_address; + + /* Everything to the end of the fs block must be zero */ + if (memchr_inv(rsb + 1, 0, BBTOB(bp->b_length) - sizeof(*rsb))) + return __this_address; + + return NULL; +} + +/* Check superblock fields for a read or revalidation. */ +static inline xfs_failaddr_t +xfs_rtsb_verify_all( + struct xfs_buf *bp) +{ + struct xfs_rtsb *rsb = bp->b_addr; + struct xfs_mount *mp = bp->b_mount; + xfs_failaddr_t fa; + + fa = xfs_rtsb_verify_common(bp); + if (fa) + return fa; + + if (memcmp(&rsb->rsb_fname, &mp->m_sb.sb_fname, XFSLABEL_MAX)) + return __this_address; + if (!uuid_equal(&rsb->rsb_uuid, &mp->m_sb.sb_uuid)) + return __this_address; + if (!uuid_equal(&rsb->rsb_meta_uuid, &mp->m_sb.sb_meta_uuid)) + return __this_address; + + return NULL; +} + +static void +xfs_rtsb_read_verify( + struct xfs_buf *bp) +{ + xfs_failaddr_t fa; + + if (!xfs_buf_verify_cksum(bp, XFS_RTSB_CRC_OFF)) { + xfs_verifier_error(bp, -EFSBADCRC, __this_address); + return; + } + + fa = xfs_rtsb_verify_all(bp); + if (fa) + xfs_verifier_error(bp, -EFSCORRUPTED, fa); +} + +static void +xfs_rtsb_write_verify( + struct xfs_buf *bp) +{ + xfs_failaddr_t fa; + + fa = xfs_rtsb_verify_common(bp); + if (fa) { + xfs_verifier_error(bp, -EFSCORRUPTED, fa); + return; + } + + xfs_buf_update_cksum(bp, XFS_RTSB_CRC_OFF); +} + +const struct xfs_buf_ops xfs_rtsb_buf_ops = { + .name = "xfs_rtsb", + .magic = { 0, cpu_to_be32(XFS_RTSB_MAGIC) }, + .verify_read = xfs_rtsb_read_verify, + .verify_write = xfs_rtsb_write_verify, + .verify_struct = xfs_rtsb_verify_all, +}; diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index 21891aa10ada02..b5f798d01dba05 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -234,11 +234,22 @@ xfs_validate_sb_read( return 0; } +/* Return the number of extents covered by a single rt bitmap file */ +static xfs_rtbxlen_t +xfs_extents_per_rbm( + struct xfs_sb *sbp) +{ + if (xfs_sb_is_v5(sbp) && + (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_METADIR)) + return sbp->sb_rgextents; + return sbp->sb_rextents; +} + static uint64_t -xfs_sb_calc_rbmblocks( +xfs_expected_rbmblocks( struct xfs_sb *sbp) { - return howmany_64(sbp->sb_rextents, NBBY * sbp->sb_blocksize); + return howmany_64(xfs_extents_per_rbm(sbp), NBBY * sbp->sb_blocksize); } /* Validate the realtime geometry */ @@ -260,7 +271,7 @@ xfs_validate_rt_geometry( if (sbp->sb_rextents == 0 || sbp->sb_rextents != div_u64(sbp->sb_rblocks, sbp->sb_rextsize) || sbp->sb_rextslog != xfs_compute_rextslog(sbp->sb_rextents) || - sbp->sb_rbmblocks != xfs_sb_calc_rbmblocks(sbp)) + sbp->sb_rbmblocks != xfs_expected_rbmblocks(sbp)) return false; return true; @@ -341,6 +352,59 @@ xfs_validate_sb_write( return 0; } +static int +xfs_validate_sb_rtgroups( + struct xfs_mount *mp, + struct xfs_sb *sbp) +{ + uint64_t groups; + + if (sbp->sb_rextsize == 0) { + xfs_warn(mp, +"Realtime extent size must not be zero."); + return -EINVAL; + } + + if (sbp->sb_rgextents > XFS_MAX_RGBLOCKS / sbp->sb_rextsize) { + xfs_warn(mp, +"Realtime group size (%u) must be less than %u rt extents.", + sbp->sb_rgextents, + XFS_MAX_RGBLOCKS / sbp->sb_rextsize); + return -EINVAL; + } + + if (sbp->sb_rgextents < XFS_MIN_RGEXTENTS) { + xfs_warn(mp, +"Realtime group size (%u) must be at least %u rt extents.", + sbp->sb_rgextents, XFS_MIN_RGEXTENTS); + return -EINVAL; + } + + if (sbp->sb_rgcount > XFS_MAX_RGNUMBER) { + xfs_warn(mp, +"Realtime groups (%u) must be less than %u.", + sbp->sb_rgcount, XFS_MAX_RGNUMBER); + return -EINVAL; + } + + groups = howmany_64(sbp->sb_rextents, sbp->sb_rgextents); + if (groups != sbp->sb_rgcount) { + xfs_warn(mp, +"Realtime groups (%u) do not cover the entire rt section; need (%llu) groups.", + sbp->sb_rgcount, groups); + return -EINVAL; + } + + /* Exchange-range is required for fsr to work on realtime files */ + if (!(sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_EXCHRANGE)) { + xfs_warn(mp, +"Realtime groups feature requires exchange-range support."); + return -EINVAL; + } + + return 0; +} + /* Check the validity of the SB. */ STATIC int xfs_validate_sb_common( @@ -352,6 +416,7 @@ xfs_validate_sb_common( uint32_t agcount = 0; uint32_t rem; bool has_dalign; + int error; if (!xfs_verify_magic(bp, dsb->sb_magicnum)) { xfs_warn(mp, @@ -401,6 +466,12 @@ xfs_validate_sb_common( return -EINVAL; } } + + if (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_METADIR) { + error = xfs_validate_sb_rtgroups(mp, sbp); + if (error) + return error; + } } else if (sbp->sb_qflags & (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) { xfs_notice(mp, @@ -692,13 +763,15 @@ __xfs_sb_from_disk( if (convert_xquota) xfs_sb_quota_from_disk(to); - if (to->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_METADIR) + if (to->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_METADIR) { to->sb_metadirino = be64_to_cpu(from->sb_metadirino); - else + to->sb_rgcount = be32_to_cpu(from->sb_rgcount); + to->sb_rgextents = be32_to_cpu(from->sb_rgextents); + } else { to->sb_metadirino = NULLFSINO; - - to->sb_rgcount = 1; - to->sb_rgextents = 0; + to->sb_rgcount = 1; + to->sb_rgextents = 0; + } } void @@ -847,8 +920,11 @@ xfs_sb_to_disk( if (from->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_META_UUID) uuid_copy(&to->sb_meta_uuid, &from->sb_meta_uuid); - if (from->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_METADIR) + if (from->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_METADIR) { to->sb_metadirino = cpu_to_be64(from->sb_metadirino); + to->sb_rgcount = cpu_to_be32(from->sb_rgcount); + to->sb_rgextents = cpu_to_be32(from->sb_rgextents); + } } /* @@ -988,9 +1064,9 @@ xfs_mount_sb_set_rextsize( mp->m_rtxblklog = log2_if_power2(sbp->sb_rextsize); mp->m_rtxblkmask = mask64_if_power2(sbp->sb_rextsize); - mp->m_rgblocks = 0; - mp->m_rgblklog = 0; - mp->m_rgblkmask = (uint64_t)-1; + mp->m_rgblocks = sbp->sb_rgextents * sbp->sb_rextsize; + mp->m_rgblklog = log2_if_power2(mp->m_rgblocks); + mp->m_rgblkmask = mask64_if_power2(mp->m_rgblocks); rgs->blocks = 0; rgs->blklog = 0; diff --git a/fs/xfs/libxfs/xfs_shared.h b/fs/xfs/libxfs/xfs_shared.h index 33b84a3a83ff63..552365d212ea26 100644 --- a/fs/xfs/libxfs/xfs_shared.h +++ b/fs/xfs/libxfs/xfs_shared.h @@ -39,6 +39,7 @@ extern const struct xfs_buf_ops xfs_inode_buf_ra_ops; extern const struct xfs_buf_ops xfs_refcountbt_buf_ops; extern const struct xfs_buf_ops xfs_rmapbt_buf_ops; extern const struct xfs_buf_ops xfs_rtbuf_ops; +extern const struct xfs_buf_ops xfs_rtsb_buf_ops; extern const struct xfs_buf_ops xfs_sb_buf_ops; extern const struct xfs_buf_ops xfs_sb_quiet_buf_ops; extern const struct xfs_buf_ops xfs_symlink_buf_ops; diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 2795dd83c23b3f..eca206140d4b0c 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -387,12 +387,14 @@ __XFS_HAS_FEAT(metadir, METADIR) static inline bool xfs_has_rtgroups(struct xfs_mount *mp) { - return false; + /* all metadir file systems also allow rtgroups */ + return xfs_has_metadir(mp); } static inline bool xfs_has_rtsb(struct xfs_mount *mp) { - return false; + /* all rtgroups filesystems with an rt section have an rtsb */ + return xfs_has_rtgroups(mp) && xfs_has_realtime(mp); } /* diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index a5e3f7be81ffa8..866274a66d4d28 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -751,6 +751,11 @@ xfs_growfs_rt_alloc_fake_mount( nmp->m_sb.sb_rextents = xfs_blen_to_rtbxlen(nmp, nmp->m_sb.sb_rblocks); nmp->m_sb.sb_rbmblocks = xfs_rtbitmap_blockcount(nmp); nmp->m_sb.sb_rextslog = xfs_compute_rextslog(nmp->m_sb.sb_rextents); + if (xfs_has_rtgroups(nmp)) + nmp->m_sb.sb_rgcount = howmany_64(nmp->m_sb.sb_rextents, + nmp->m_sb.sb_rgextents); + else + nmp->m_sb.sb_rgcount = 1; nmp->m_rsumblocks = xfs_rtsummary_blockcount(nmp, &nmp->m_rsumlevels); if (rblocks > 0) @@ -761,6 +766,26 @@ xfs_growfs_rt_alloc_fake_mount( return nmp; } +static xfs_rfsblock_t +xfs_growfs_rt_nrblocks( + struct xfs_rtgroup *rtg, + xfs_rfsblock_t nrblocks, + xfs_agblock_t rextsize, + xfs_fileoff_t bmbno) +{ + struct xfs_mount *mp = rtg_mount(rtg); + xfs_rfsblock_t step; + + step = (bmbno + 1) * NBBY * mp->m_sb.sb_blocksize * rextsize; + if (xfs_has_rtgroups(mp)) { + xfs_rfsblock_t rgblocks = mp->m_sb.sb_rgextents * rextsize; + + step = min(rgblocks, step) + rgblocks * rtg_rgno(rtg); + } + + return min(nrblocks, step); +} + static int xfs_growfs_rt_bmblock( struct xfs_rtgroup *rtg, @@ -779,16 +804,15 @@ xfs_growfs_rt_bmblock( .rtg = rtg, }; struct xfs_mount *nmp; - xfs_rfsblock_t nrblocks_step; xfs_rtbxlen_t freed_rtx; int error; /* * Calculate new sb and mount fields for this round. */ - nrblocks_step = (bmbno + 1) * NBBY * mp->m_sb.sb_blocksize * rextsize; nmp = nargs.mp = xfs_growfs_rt_alloc_fake_mount(mp, - min(nrblocks, nrblocks_step), rextsize); + xfs_growfs_rt_nrblocks(rtg, nrblocks, rextsize, bmbno), + rextsize); if (!nmp) return -ENOMEM;