| Message ID | 20210726114541.24898-12-chandanrlinux@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | xfs: Extend per-inode extent counters | expand |
On Mon, Jul 26, 2021 at 05:15:40PM +0530, Chandan Babu R wrote: > This commit adds a new 64-bit per-inode data extent counter. However the > maximum number of extents that a data fork can hold is limited to 2^48 > extents. This feature is available only when > XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT feature bit is enabled on the > filesystem. Also, enabling this feature bit causes attr fork extent counter to > use the 32-bit extent counter that was previously used to hold the data fork > extent counter. This implies that the attr fork can now occupy a maximum of > 2^32 extents. > > This commit also exposes the newly introduced XFS_IOC_BULKSTAT_V6 ioctl > interface to user space. > > Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com> > --- > fs/xfs/libxfs/xfs_bmap.c | 8 +++----- > fs/xfs/libxfs/xfs_format.h | 27 ++++++++++++++++++++++++--- > fs/xfs/libxfs/xfs_fs.h | 1 + > fs/xfs/libxfs/xfs_inode_buf.c | 28 ++++++++++++++++++++++++---- > fs/xfs/libxfs/xfs_inode_fork.h | 22 +++++++++++++++++----- > fs/xfs/libxfs/xfs_log_format.h | 3 ++- > fs/xfs/scrub/inode_repair.c | 11 +++++++++-- > fs/xfs/xfs_inode.c | 2 +- > fs/xfs/xfs_inode_item.c | 15 +++++++++++++-- > fs/xfs/xfs_inode_item_recover.c | 25 +++++++++++++++++++------ > fs/xfs/xfs_ioctl.c | 3 +++ > 11 files changed, 116 insertions(+), 29 deletions(-) > > diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c > index a27d57ea301c..e05898c9acbc 100644 > --- a/fs/xfs/libxfs/xfs_bmap.c > +++ b/fs/xfs/libxfs/xfs_bmap.c > @@ -54,18 +54,16 @@ xfs_bmap_compute_maxlevels( > int whichfork) /* data or attr fork */ > { > xfs_extnum_t maxleafents; /* max leaf entries possible */ > + uint64_t maxblocks; /* max blocks at this level */ xfs_rfsblock_t? > int level; /* btree level */ > - uint maxblocks; /* max blocks at this level */ > int maxrootrecs; /* max records in root block */ > int minleafrecs; /* min records in leaf block */ > int minnoderecs; /* min records in node block */ > int sz; /* root block size */ > > /* > - * The maximum number of extents in a file, hence the maximum number of > - * leaf entries, is controlled by the size of the on-disk extent count, > - * either a signed 32-bit number for the data fork, or a signed 16-bit > - * number for the attr fork. > + * The maximum number of extents in a fork, hence the maximum number of > + * leaf entries, is controlled by the size of the on-disk extent count. > * > * Note that we can no longer assume that if we are in ATTR1 that the > * fork offset of all the inodes will be > diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h > index 2362cc005cc6..3aa83d75670d 100644 > --- a/fs/xfs/libxfs/xfs_format.h > +++ b/fs/xfs/libxfs/xfs_format.h > @@ -485,13 +485,15 @@ xfs_sb_has_ro_compat_feature( > #define XFS_SB_FEAT_INCOMPAT_BIGTIME (1 << 3) /* large timestamps */ > #define XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR (1 << 4) /* needs xfs_repair */ > #define XFS_SB_FEAT_INCOMPAT_METADIR (1 << 5) /* metadata dir tree */ > -#define XFS_SB_FEAT_INCOMPAT_ALL \ > +#define XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT (1 << 6) /* 64-bit inode fork extent counter */ > +#define XFS_SB_FEAT_INCOMPAT_ALL \ > (XFS_SB_FEAT_INCOMPAT_FTYPE| \ > XFS_SB_FEAT_INCOMPAT_SPINODES| \ > XFS_SB_FEAT_INCOMPAT_META_UUID| \ > XFS_SB_FEAT_INCOMPAT_BIGTIME| \ > XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR| \ > - XFS_SB_FEAT_INCOMPAT_METADIR) > + XFS_SB_FEAT_INCOMPAT_METADIR| \ Oh hey, this /definitely/ branches off djwong-dev. :) > + XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT) Hm. I don't think we're ever going to want to support more than u48 extent counts because that's a lot of memory consumption. It might be safe to call this by a shorter name, e.g. BIGBMAP? SUPERSPARSE? (no, too long) EXT64 (beat that, ext4!) NREXT64 I kinda like BIGBMAP since it's actually pronounceable... > #define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL > static inline bool > @@ -591,6 +593,12 @@ static inline bool xfs_sb_version_hasmetauuid(struct xfs_sb *sbp) > (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_META_UUID); > } > > +static inline bool xfs_sb_version_hasextcount_64bit(struct xfs_sb *sbp) > +{ > + return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) && > + (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT); > +} > + > static inline bool xfs_sb_version_hasrmapbt(struct xfs_sb *sbp) > { > return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) && > @@ -1039,6 +1047,16 @@ typedef struct xfs_dinode { > __be64 di_size; /* number of bytes in file */ > __be64 di_nblocks; /* # of direct & btree blocks used */ > __be32 di_extsize; /* basic/minimum extent size for file */ > + > + /* > + * On a extcnt64bit filesystem, di_nextents64 holds the data fork > + * extent count, di_nextents32 holds the attr fork extent count, > + * and di_nextents16 must be zero. > + * > + * Otherwise, di_nextents32 holds the data fork extent count, > + * di_nextents16 holds the attr fork extent count, and di_nextents64 > + * must be zero. (See earlier comments about reusing di_pad[6]) > + */ > __be32 di_nextents32; /* number of extents in data fork */ > __be16 di_nextents16; /* number of extents in attribute fork*/ > __u8 di_forkoff; /* attr fork offs, <<3 for 64b align */ > @@ -1057,7 +1075,8 @@ typedef struct xfs_dinode { > __be64 di_lsn; /* flush sequence */ > __be64 di_flags2; /* more random flags */ > __be32 di_cowextsize; /* basic cow extent size for file */ > - __u8 di_pad2[12]; /* more padding for future expansion */ > + __u8 di_pad2[4]; /* more padding for future expansion */ > + __be64 di_nextents64; > > /* fields only written to during inode creation */ > xfs_timestamp_t di_crtime; /* time created */ > @@ -1113,6 +1132,8 @@ enum xfs_dinode_fmt { > * Max values for extlen and disk inode's extent counters. > */ > #define MAXEXTLEN ((uint32_t)0x1fffff) /* 21 bits */ > +#define XFS_IFORK_EXTCNT_MAXU48 ((uint64_t)0xffffffffffff) /* Unsigned 48-bits */ > +#define XFS_IFORK_EXTCNT_MAXU32 ((uint32_t)0xffffffff) /* Unsigned 32-bits */ > #define XFS_IFORK_EXTCNT_MAXS32 ((int32_t)0x7fffffff) /* Signed 32-bits */ > #define XFS_IFORK_EXTCNT_MAXS16 ((int16_t)0x7fff) /* Signed 16-bits */ > > diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h > index 756be4ff5996..57f67445f095 100644 > --- a/fs/xfs/libxfs/xfs_fs.h > +++ b/fs/xfs/libxfs/xfs_fs.h > @@ -858,6 +858,7 @@ struct xfs_scrub_metadata { > #define XFS_IOC_BULKSTAT_V5 _IOR ('X', 127, struct xfs_bulkstat_req) > #define XFS_IOC_INUMBERS _IOR ('X', 128, struct xfs_inumbers_req) > /* FIEXCHANGE_RANGE ----------- hoisted 129 */ > +#define XFS_IOC_BULKSTAT_V6 _IOR ('X', 130, struct xfs_bulkstat_req) (See earlier comments about adding flags to xfs_bulk_ireq so we don't have to rev the ioctl definitions yet again.) > /* XFS_IOC_GETFSUUID ---------- deprecated 140 */ > > > diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c > index 65d753e16007..28e49394edbb 100644 > --- a/fs/xfs/libxfs/xfs_inode_buf.c > +++ b/fs/xfs/libxfs/xfs_inode_buf.c > @@ -291,6 +291,7 @@ xfs_inode_to_disk( > struct xfs_dinode *to, > xfs_lsn_t lsn) > { > + struct xfs_sb *sbp = &ip->i_mount->m_sb; > struct inode *inode = VFS_I(ip); > > to->di_magic = cpu_to_be16(XFS_DINODE_MAGIC); > @@ -313,8 +314,6 @@ xfs_inode_to_disk( > to->di_size = cpu_to_be64(ip->i_disk_size); > to->di_nblocks = cpu_to_be64(ip->i_nblocks); > to->di_extsize = cpu_to_be32(ip->i_extsize); > - to->di_nextents32 = cpu_to_be32(xfs_ifork_nextents(&ip->i_df)); > - to->di_nextents16 = cpu_to_be16(xfs_ifork_nextents(ip->i_afp)); > to->di_forkoff = ip->i_forkoff; > to->di_aformat = xfs_ifork_format(ip->i_afp); > to->di_flags = cpu_to_be16(ip->i_diflags); > @@ -334,6 +333,19 @@ xfs_inode_to_disk( > to->di_version = 2; > to->di_flushiter = cpu_to_be16(ip->i_flushiter); > } > + > + if (xfs_sb_version_hasextcount_64bit(sbp)) { > + to->di_nextents64 = cpu_to_be64(xfs_ifork_nextents(&ip->i_df)); > + to->di_nextents32 = cpu_to_be32(xfs_ifork_nextents(ip->i_afp)); Hmm, yes, these really should be separate helpers like what we did for timestamps. > + /* > + * xchk_dinode() passes an uninitialized disk inode. Hence, > + * clear di_nextents16 field explicitly. So fix xchk_dinode. > + */ > + to->di_nextents16 = cpu_to_be16(0); > + } else { > + to->di_nextents32 = cpu_to_be32(xfs_ifork_nextents(&ip->i_df)); > + to->di_nextents16 = cpu_to_be16(xfs_ifork_nextents(ip->i_afp)); > + } > } > > static xfs_failaddr_t > @@ -386,14 +398,22 @@ xfs_dfork_nextents( > xfs_extnum_t *nextents) > { > int error = 0; > + bool has_64bit_extcnt; > + > + has_64bit_extcnt = xfs_sb_version_hasextcount_64bit(&mp->m_sb); > + > + if (has_64bit_extcnt && dip->di_nextents16 != 0) > + return -EFSCORRUPTED; I think if you follow my suggestions to encode the upper 32/16 bits of the extent counters in di_pad, the need for error codes (and patch 6) go away completely. > > switch (whichfork) { > case XFS_DATA_FORK: > - *nextents = be32_to_cpu(dip->di_nextents32); > + *nextents = has_64bit_extcnt ? be64_to_cpu(dip->di_nextents64) > + : be32_to_cpu(dip->di_nextents32); > break; > > case XFS_ATTR_FORK: > - *nextents = be16_to_cpu(dip->di_nextents16); > + *nextents = has_64bit_extcnt ? be32_to_cpu(dip->di_nextents32) > + : be16_to_cpu(dip->di_nextents16); > break; > > default: > diff --git a/fs/xfs/libxfs/xfs_inode_fork.h b/fs/xfs/libxfs/xfs_inode_fork.h > index 1eda2163603e..ffdd2abcd73c 100644 > --- a/fs/xfs/libxfs/xfs_inode_fork.h > +++ b/fs/xfs/libxfs/xfs_inode_fork.h > @@ -21,9 +21,9 @@ struct xfs_ifork { > void *if_root; /* extent tree root */ > char *if_data; /* inline file data */ > } if_u1; > + xfs_extnum_t if_nextents; /* # of extents in this fork */ > short if_broot_bytes; /* bytes allocated for root */ > int8_t if_format; /* format of this fork */ > - xfs_extnum_t if_nextents; /* # of extents in this fork */ > }; > > /* > @@ -135,10 +135,22 @@ static inline int8_t xfs_ifork_format(struct xfs_ifork *ifp) > > static inline xfs_extnum_t xfs_iext_max(struct xfs_mount *mp, int whichfork) > { > - if (whichfork == XFS_DATA_FORK || whichfork == XFS_COW_FORK) > - return XFS_IFORK_EXTCNT_MAXS32; > - else > - return XFS_IFORK_EXTCNT_MAXS16; > + bool has_64bit_extcnt = xfs_sb_version_hasextcount_64bit(&mp->m_sb); > + > + switch (whichfork) { > + case XFS_DATA_FORK: > + case XFS_COW_FORK: > + return has_64bit_extcnt ? XFS_IFORK_EXTCNT_MAXU48 > + : XFS_IFORK_EXTCNT_MAXS32; > + > + case XFS_ATTR_FORK: > + return has_64bit_extcnt ? XFS_IFORK_EXTCNT_MAXU32 > + : XFS_IFORK_EXTCNT_MAXS16; > + > + default: > + ASSERT(0); > + return 0; > + } > } > > struct xfs_ifork *xfs_ifork_alloc(enum xfs_dinode_fmt format, > diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h > index ca8e4ad8312a..9b5d64708ed1 100644 > --- a/fs/xfs/libxfs/xfs_log_format.h > +++ b/fs/xfs/libxfs/xfs_log_format.h > @@ -420,7 +420,8 @@ struct xfs_log_dinode { > xfs_lsn_t di_lsn; /* flush sequence */ > uint64_t di_flags2; /* more random flags */ > uint32_t di_cowextsize; /* basic cow extent size for file */ > - uint8_t di_pad2[12]; /* more padding for future expansion */ > + uint8_t di_pad2[4]; /* more padding for future expansion */ > + uint64_t di_nextents64; /* higher part of data fork extent count */ Similarly, I think you should reuse di_pad in the log dinode for the high bits of the extent count fields. --D > > /* fields only written to during inode creation */ > xfs_log_timestamp_t di_crtime; /* time created */ > diff --git a/fs/xfs/scrub/inode_repair.c b/fs/xfs/scrub/inode_repair.c > index 4d773a16f886..dde6b700e891 100644 > --- a/fs/xfs/scrub/inode_repair.c > +++ b/fs/xfs/scrub/inode_repair.c > @@ -736,7 +736,10 @@ xrep_dinode_zap_dfork( > { > trace_xrep_dinode_zap_dfork(sc, dip); > > - dip->di_nextents32 = 0; > + if (xfs_sb_version_hasextcount_64bit(&sc->mp->m_sb)) > + dip->di_nextents64 = 0; > + else > + dip->di_nextents32 = 0; > > /* Special files always get reset to DEV */ > switch (mode & S_IFMT) { > @@ -823,7 +826,11 @@ xrep_dinode_zap_afork( > trace_xrep_dinode_zap_afork(sc, dip); > > dip->di_aformat = XFS_DINODE_FMT_EXTENTS; > - dip->di_nextents16 = 0; > + > + if (xfs_sb_version_hasextcount_64bit(&sc->mp->m_sb)) > + dip->di_nextents32 = 0; > + else > + dip->di_nextents16 = 0; > > dip->di_forkoff = 0; > dip->di_mode = cpu_to_be16(mode & ~0777); > diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c > index 4070fb01350c..19d525093702 100644 > --- a/fs/xfs/xfs_inode.c > +++ b/fs/xfs/xfs_inode.c > @@ -2511,7 +2511,7 @@ xfs_iflush( > ip->i_nblocks, mp, XFS_ERRTAG_IFLUSH_5)) { > xfs_alert_tag(mp, XFS_PTAG_IFLUSH, > "%s: detected corrupt incore inode %llu, " > - "total extents = %llu nblocks = %lld, ptr "PTR_FMT, > + "total extents = %llu, nblocks = %lld, ptr "PTR_FMT, > __func__, ip->i_ino, > ip->i_df.if_nextents + xfs_ifork_nextents(ip->i_afp), > ip->i_nblocks, ip); > diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c > index f54ce7468ba1..3fa73100484b 100644 > --- a/fs/xfs/xfs_inode_item.c > +++ b/fs/xfs/xfs_inode_item.c > @@ -364,6 +364,7 @@ xfs_inode_to_log_dinode( > struct xfs_log_dinode *to, > xfs_lsn_t lsn) > { > + struct xfs_sb *sbp = &ip->i_mount->m_sb; > struct inode *inode = VFS_I(ip); > > to->di_magic = XFS_DINODE_MAGIC; > @@ -385,8 +386,6 @@ xfs_inode_to_log_dinode( > to->di_size = ip->i_disk_size; > to->di_nblocks = ip->i_nblocks; > to->di_extsize = ip->i_extsize; > - to->di_nextents32 = xfs_ifork_nextents(&ip->i_df); > - to->di_nextents16 = xfs_ifork_nextents(ip->i_afp); > to->di_forkoff = ip->i_forkoff; > to->di_aformat = xfs_ifork_format(ip->i_afp); > to->di_flags = ip->i_diflags; > @@ -402,6 +401,16 @@ xfs_inode_to_log_dinode( > to->di_crtime = xfs_inode_to_log_dinode_ts(ip, ip->i_crtime); > to->di_flags2 = ip->i_diflags2; > to->di_cowextsize = ip->i_cowextsize; > + if (xfs_sb_version_hasextcount_64bit(sbp)) { > + to->di_nextents64 = xfs_ifork_nextents(&ip->i_df); > + to->di_nextents32 = xfs_ifork_nextents(ip->i_afp); > + to->di_nextents16 = 0; > + } else { > + to->di_nextents64 = 0; > + to->di_nextents32 = xfs_ifork_nextents(&ip->i_df); > + to->di_nextents16 = xfs_ifork_nextents(ip->i_afp); > + } > + > to->di_ino = ip->i_ino; > to->di_lsn = lsn; > memset(to->di_pad2, 0, sizeof(to->di_pad2)); > @@ -410,6 +419,8 @@ xfs_inode_to_log_dinode( > } else { > to->di_version = 2; > to->di_flushiter = ip->i_flushiter; > + to->di_nextents32 = xfs_ifork_nextents(&ip->i_df); > + to->di_nextents16 = xfs_ifork_nextents(ip->i_afp); > } > } > > diff --git a/fs/xfs/xfs_inode_item_recover.c b/fs/xfs/xfs_inode_item_recover.c > index 40af9d1265c7..fcf360c03bc1 100644 > --- a/fs/xfs/xfs_inode_item_recover.c > +++ b/fs/xfs/xfs_inode_item_recover.c > @@ -166,8 +166,6 @@ xfs_log_dinode_to_disk( > to->di_size = cpu_to_be64(from->di_size); > to->di_nblocks = cpu_to_be64(from->di_nblocks); > to->di_extsize = cpu_to_be32(from->di_extsize); > - to->di_nextents32 = cpu_to_be32(from->di_nextents32); > - to->di_nextents16 = cpu_to_be16(from->di_nextents16); > to->di_forkoff = from->di_forkoff; > to->di_aformat = from->di_aformat; > to->di_dmevmask = cpu_to_be32(from->di_dmevmask); > @@ -181,12 +179,17 @@ xfs_log_dinode_to_disk( > from->di_crtime); > to->di_flags2 = cpu_to_be64(from->di_flags2); > to->di_cowextsize = cpu_to_be32(from->di_cowextsize); > + to->di_nextents64 = cpu_to_be64(from->di_nextents64); > + to->di_nextents32 = cpu_to_be32(from->di_nextents32); > + to->di_nextents16 = cpu_to_be16(from->di_nextents16); > to->di_ino = cpu_to_be64(from->di_ino); > to->di_lsn = cpu_to_be64(from->di_lsn); > memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2)); > uuid_copy(&to->di_uuid, &from->di_uuid); > to->di_flushiter = 0; > } else { > + to->di_nextents32 = cpu_to_be32(from->di_nextents32); > + to->di_nextents16 = cpu_to_be16(from->di_nextents16); > to->di_flushiter = cpu_to_be16(from->di_flushiter); > } > } > @@ -202,6 +205,8 @@ xlog_recover_inode_commit_pass2( > struct xfs_mount *mp = log->l_mp; > struct xfs_buf *bp; > struct xfs_dinode *dip; > + xfs_extnum_t nextents; > + xfs_aextnum_t anextents; > int len; > char *src; > char *dest; > @@ -332,16 +337,24 @@ xlog_recover_inode_commit_pass2( > goto out_release; > } > } > - if (unlikely(ldip->di_nextents32 + ldip->di_nextents16 > ldip->di_nblocks)) { > + > + if (xfs_sb_version_hasextcount_64bit(&mp->m_sb)) { > + nextents = ldip->di_nextents64; > + anextents = ldip->di_nextents32; > + } else { > + nextents = ldip->di_nextents32; > + anextents = ldip->di_nextents16; > + } > + > + if (unlikely(nextents + anextents > ldip->di_nblocks)) { > XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(5)", > XFS_ERRLEVEL_LOW, mp, ldip, > sizeof(*ldip)); > xfs_alert(mp, > "%s: Bad inode log record, rec ptr "PTR_FMT", dino ptr "PTR_FMT", " > - "dino bp "PTR_FMT", ino %Ld, total extents = %d, nblocks = %Ld", > + "dino bp "PTR_FMT", ino %Ld, total extents = %llu, nblocks = %Ld", > __func__, item, dip, bp, in_f->ilf_ino, > - ldip->di_nextents32 + ldip->di_nextents16, > - ldip->di_nblocks); > + nextents + anextents, ldip->di_nblocks); > error = -EFSCORRUPTED; > goto out_release; > } > diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c > index 19964b394dc4..2d44aa655f41 100644 > --- a/fs/xfs/xfs_ioctl.c > +++ b/fs/xfs/xfs_ioctl.c > @@ -1901,6 +1901,9 @@ xfs_file_ioctl( > case XFS_IOC_BULKSTAT_V5: > return xfs_ioc_bulkstat(filp, cmd, arg, > XFS_BULKSTAT_VERSION_V5); > + case XFS_IOC_BULKSTAT_V6: > + return xfs_ioc_bulkstat(filp, cmd, arg, > + XFS_BULKSTAT_VERSION_V6); > case XFS_IOC_INUMBERS: > return xfs_ioc_inumbers(mp, cmd, arg, > XFS_INUMBERS_VERSION_V5); > -- > 2.30.2 >
On 28 Jul 2021 at 04:39, Darrick J. Wong wrote: > On Mon, Jul 26, 2021 at 05:15:40PM +0530, Chandan Babu R wrote: >> This commit adds a new 64-bit per-inode data extent counter. However the >> maximum number of extents that a data fork can hold is limited to 2^48 >> extents. This feature is available only when >> XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT feature bit is enabled on the >> filesystem. Also, enabling this feature bit causes attr fork extent counter to >> use the 32-bit extent counter that was previously used to hold the data fork >> extent counter. This implies that the attr fork can now occupy a maximum of >> 2^32 extents. >> >> This commit also exposes the newly introduced XFS_IOC_BULKSTAT_V6 ioctl >> interface to user space. >> >> Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com> >> --- >> fs/xfs/libxfs/xfs_bmap.c | 8 +++----- >> fs/xfs/libxfs/xfs_format.h | 27 ++++++++++++++++++++++++--- >> fs/xfs/libxfs/xfs_fs.h | 1 + >> fs/xfs/libxfs/xfs_inode_buf.c | 28 ++++++++++++++++++++++++---- >> fs/xfs/libxfs/xfs_inode_fork.h | 22 +++++++++++++++++----- >> fs/xfs/libxfs/xfs_log_format.h | 3 ++- >> fs/xfs/scrub/inode_repair.c | 11 +++++++++-- >> fs/xfs/xfs_inode.c | 2 +- >> fs/xfs/xfs_inode_item.c | 15 +++++++++++++-- >> fs/xfs/xfs_inode_item_recover.c | 25 +++++++++++++++++++------ >> fs/xfs/xfs_ioctl.c | 3 +++ >> 11 files changed, 116 insertions(+), 29 deletions(-) >> >> diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c >> index a27d57ea301c..e05898c9acbc 100644 >> --- a/fs/xfs/libxfs/xfs_bmap.c >> +++ b/fs/xfs/libxfs/xfs_bmap.c >> @@ -54,18 +54,16 @@ xfs_bmap_compute_maxlevels( >> int whichfork) /* data or attr fork */ >> { >> xfs_extnum_t maxleafents; /* max leaf entries possible */ >> + uint64_t maxblocks; /* max blocks at this level */ > > xfs_rfsblock_t? Ok. I will update that. > >> int level; /* btree level */ >> - uint maxblocks; /* max blocks at this level */ >> int maxrootrecs; /* max records in root block */ >> int minleafrecs; /* min records in leaf block */ >> int minnoderecs; /* min records in node block */ >> int sz; /* root block size */ >> >> /* >> - * The maximum number of extents in a file, hence the maximum number of >> - * leaf entries, is controlled by the size of the on-disk extent count, >> - * either a signed 32-bit number for the data fork, or a signed 16-bit >> - * number for the attr fork. >> + * The maximum number of extents in a fork, hence the maximum number of >> + * leaf entries, is controlled by the size of the on-disk extent count. >> * >> * Note that we can no longer assume that if we are in ATTR1 that the >> * fork offset of all the inodes will be >> diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h >> index 2362cc005cc6..3aa83d75670d 100644 >> --- a/fs/xfs/libxfs/xfs_format.h >> +++ b/fs/xfs/libxfs/xfs_format.h >> @@ -485,13 +485,15 @@ xfs_sb_has_ro_compat_feature( >> #define XFS_SB_FEAT_INCOMPAT_BIGTIME (1 << 3) /* large timestamps */ >> #define XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR (1 << 4) /* needs xfs_repair */ >> #define XFS_SB_FEAT_INCOMPAT_METADIR (1 << 5) /* metadata dir tree */ >> -#define XFS_SB_FEAT_INCOMPAT_ALL \ >> +#define XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT (1 << 6) /* 64-bit inode fork extent counter */ >> +#define XFS_SB_FEAT_INCOMPAT_ALL \ >> (XFS_SB_FEAT_INCOMPAT_FTYPE| \ >> XFS_SB_FEAT_INCOMPAT_SPINODES| \ >> XFS_SB_FEAT_INCOMPAT_META_UUID| \ >> XFS_SB_FEAT_INCOMPAT_BIGTIME| \ >> XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR| \ >> - XFS_SB_FEAT_INCOMPAT_METADIR) >> + XFS_SB_FEAT_INCOMPAT_METADIR| \ > > Oh hey, this /definitely/ branches off djwong-dev. :) > >> + XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT) > > Hm. I don't think we're ever going to want to support more than u48 > extent counts because that's a lot of memory consumption. It might be > safe to call this by a shorter name, e.g. > > BIGBMAP? > SUPERSPARSE? (no, too long) > EXT64 (beat that, ext4!) :) > NREXT64 > > I kinda like BIGBMAP since it's actually pronounceable... Dave had suggested (https://lore.kernel.org/linux-xfs/20200903225145.GG12131@dread.disaster.area/) that "field widths" be used to identify the feature since, 1. The feature name would convey the width of the field. 2. Naming a new extension in the future will be easier. I agree with the reasoning given by him. So may be NREXT64 suggested by you would strike the right balance. > >> #define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL >> static inline bool >> @@ -591,6 +593,12 @@ static inline bool xfs_sb_version_hasmetauuid(struct xfs_sb *sbp) >> (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_META_UUID); >> } >> >> +static inline bool xfs_sb_version_hasextcount_64bit(struct xfs_sb *sbp) >> +{ >> + return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) && >> + (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT); >> +} >> + >> static inline bool xfs_sb_version_hasrmapbt(struct xfs_sb *sbp) >> { >> return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) && >> @@ -1039,6 +1047,16 @@ typedef struct xfs_dinode { >> __be64 di_size; /* number of bytes in file */ >> __be64 di_nblocks; /* # of direct & btree blocks used */ >> __be32 di_extsize; /* basic/minimum extent size for file */ >> + >> + /* >> + * On a extcnt64bit filesystem, di_nextents64 holds the data fork >> + * extent count, di_nextents32 holds the attr fork extent count, >> + * and di_nextents16 must be zero. >> + * >> + * Otherwise, di_nextents32 holds the data fork extent count, >> + * di_nextents16 holds the attr fork extent count, and di_nextents64 >> + * must be zero. > > (See earlier comments about reusing di_pad[6]) > >> + */ >> __be32 di_nextents32; /* number of extents in data fork */ >> __be16 di_nextents16; /* number of extents in attribute fork*/ >> __u8 di_forkoff; /* attr fork offs, <<3 for 64b align */ >> @@ -1057,7 +1075,8 @@ typedef struct xfs_dinode { >> __be64 di_lsn; /* flush sequence */ >> __be64 di_flags2; /* more random flags */ >> __be32 di_cowextsize; /* basic cow extent size for file */ >> - __u8 di_pad2[12]; /* more padding for future expansion */ >> + __u8 di_pad2[4]; /* more padding for future expansion */ >> + __be64 di_nextents64; >> >> /* fields only written to during inode creation */ >> xfs_timestamp_t di_crtime; /* time created */ >> @@ -1113,6 +1132,8 @@ enum xfs_dinode_fmt { >> * Max values for extlen and disk inode's extent counters. >> */ >> #define MAXEXTLEN ((uint32_t)0x1fffff) /* 21 bits */ >> +#define XFS_IFORK_EXTCNT_MAXU48 ((uint64_t)0xffffffffffff) /* Unsigned 48-bits */ >> +#define XFS_IFORK_EXTCNT_MAXU32 ((uint32_t)0xffffffff) /* Unsigned 32-bits */ >> #define XFS_IFORK_EXTCNT_MAXS32 ((int32_t)0x7fffffff) /* Signed 32-bits */ >> #define XFS_IFORK_EXTCNT_MAXS16 ((int16_t)0x7fff) /* Signed 16-bits */ >> >> diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h >> index 756be4ff5996..57f67445f095 100644 >> --- a/fs/xfs/libxfs/xfs_fs.h >> +++ b/fs/xfs/libxfs/xfs_fs.h >> @@ -858,6 +858,7 @@ struct xfs_scrub_metadata { >> #define XFS_IOC_BULKSTAT_V5 _IOR ('X', 127, struct xfs_bulkstat_req) >> #define XFS_IOC_INUMBERS _IOR ('X', 128, struct xfs_inumbers_req) >> /* FIEXCHANGE_RANGE ----------- hoisted 129 */ >> +#define XFS_IOC_BULKSTAT_V6 _IOR ('X', 130, struct xfs_bulkstat_req) > > (See earlier comments about adding flags to xfs_bulk_ireq so we don't > have to rev the ioctl definitions yet again.) Sure. I will fix this. > >> /* XFS_IOC_GETFSUUID ---------- deprecated 140 */ >> >> >> diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c >> index 65d753e16007..28e49394edbb 100644 >> --- a/fs/xfs/libxfs/xfs_inode_buf.c >> +++ b/fs/xfs/libxfs/xfs_inode_buf.c >> @@ -291,6 +291,7 @@ xfs_inode_to_disk( >> struct xfs_dinode *to, >> xfs_lsn_t lsn) >> { >> + struct xfs_sb *sbp = &ip->i_mount->m_sb; >> struct inode *inode = VFS_I(ip); >> >> to->di_magic = cpu_to_be16(XFS_DINODE_MAGIC); >> @@ -313,8 +314,6 @@ xfs_inode_to_disk( >> to->di_size = cpu_to_be64(ip->i_disk_size); >> to->di_nblocks = cpu_to_be64(ip->i_nblocks); >> to->di_extsize = cpu_to_be32(ip->i_extsize); >> - to->di_nextents32 = cpu_to_be32(xfs_ifork_nextents(&ip->i_df)); >> - to->di_nextents16 = cpu_to_be16(xfs_ifork_nextents(ip->i_afp)); >> to->di_forkoff = ip->i_forkoff; >> to->di_aformat = xfs_ifork_format(ip->i_afp); >> to->di_flags = cpu_to_be16(ip->i_diflags); >> @@ -334,6 +333,19 @@ xfs_inode_to_disk( >> to->di_version = 2; >> to->di_flushiter = cpu_to_be16(ip->i_flushiter); >> } >> + >> + if (xfs_sb_version_hasextcount_64bit(sbp)) { >> + to->di_nextents64 = cpu_to_be64(xfs_ifork_nextents(&ip->i_df)); >> + to->di_nextents32 = cpu_to_be32(xfs_ifork_nextents(ip->i_afp)); > > Hmm, yes, these really should be separate helpers like what we did for > timestamps. Ok. I will make the changes. > >> + /* >> + * xchk_dinode() passes an uninitialized disk inode. Hence, >> + * clear di_nextents16 field explicitly. > > So fix xchk_dinode. Ok. Will do that. > >> + */ >> + to->di_nextents16 = cpu_to_be16(0); >> + } else { >> + to->di_nextents32 = cpu_to_be32(xfs_ifork_nextents(&ip->i_df)); >> + to->di_nextents16 = cpu_to_be16(xfs_ifork_nextents(ip->i_afp)); >> + } >> } >> >> static xfs_failaddr_t >> @@ -386,14 +398,22 @@ xfs_dfork_nextents( >> xfs_extnum_t *nextents) >> { >> int error = 0; >> + bool has_64bit_extcnt; >> + >> + has_64bit_extcnt = xfs_sb_version_hasextcount_64bit(&mp->m_sb); >> + >> + if (has_64bit_extcnt && dip->di_nextents16 != 0) >> + return -EFSCORRUPTED; > > I think if you follow my suggestions to encode the upper 32/16 bits of > the extent counters in di_pad, the need for error codes (and patch 6) go > away completely. > >> >> switch (whichfork) { >> case XFS_DATA_FORK: >> - *nextents = be32_to_cpu(dip->di_nextents32); >> + *nextents = has_64bit_extcnt ? be64_to_cpu(dip->di_nextents64) >> + : be32_to_cpu(dip->di_nextents32); >> break; >> >> case XFS_ATTR_FORK: >> - *nextents = be16_to_cpu(dip->di_nextents16); >> + *nextents = has_64bit_extcnt ? be32_to_cpu(dip->di_nextents32) >> + : be16_to_cpu(dip->di_nextents16); >> break; >> >> default: >> diff --git a/fs/xfs/libxfs/xfs_inode_fork.h b/fs/xfs/libxfs/xfs_inode_fork.h >> index 1eda2163603e..ffdd2abcd73c 100644 >> --- a/fs/xfs/libxfs/xfs_inode_fork.h >> +++ b/fs/xfs/libxfs/xfs_inode_fork.h >> @@ -21,9 +21,9 @@ struct xfs_ifork { >> void *if_root; /* extent tree root */ >> char *if_data; /* inline file data */ >> } if_u1; >> + xfs_extnum_t if_nextents; /* # of extents in this fork */ >> short if_broot_bytes; /* bytes allocated for root */ >> int8_t if_format; /* format of this fork */ >> - xfs_extnum_t if_nextents; /* # of extents in this fork */ >> }; >> >> /* >> @@ -135,10 +135,22 @@ static inline int8_t xfs_ifork_format(struct xfs_ifork *ifp) >> >> static inline xfs_extnum_t xfs_iext_max(struct xfs_mount *mp, int whichfork) >> { >> - if (whichfork == XFS_DATA_FORK || whichfork == XFS_COW_FORK) >> - return XFS_IFORK_EXTCNT_MAXS32; >> - else >> - return XFS_IFORK_EXTCNT_MAXS16; >> + bool has_64bit_extcnt = xfs_sb_version_hasextcount_64bit(&mp->m_sb); >> + >> + switch (whichfork) { >> + case XFS_DATA_FORK: >> + case XFS_COW_FORK: >> + return has_64bit_extcnt ? XFS_IFORK_EXTCNT_MAXU48 >> + : XFS_IFORK_EXTCNT_MAXS32; >> + >> + case XFS_ATTR_FORK: >> + return has_64bit_extcnt ? XFS_IFORK_EXTCNT_MAXU32 >> + : XFS_IFORK_EXTCNT_MAXS16; >> + >> + default: >> + ASSERT(0); >> + return 0; >> + } >> } >> >> struct xfs_ifork *xfs_ifork_alloc(enum xfs_dinode_fmt format, >> diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h >> index ca8e4ad8312a..9b5d64708ed1 100644 >> --- a/fs/xfs/libxfs/xfs_log_format.h >> +++ b/fs/xfs/libxfs/xfs_log_format.h >> @@ -420,7 +420,8 @@ struct xfs_log_dinode { >> xfs_lsn_t di_lsn; /* flush sequence */ >> uint64_t di_flags2; /* more random flags */ >> uint32_t di_cowextsize; /* basic cow extent size for file */ >> - uint8_t di_pad2[12]; /* more padding for future expansion */ >> + uint8_t di_pad2[4]; /* more padding for future expansion */ >> + uint64_t di_nextents64; /* higher part of data fork extent count */ > > Similarly, I think you should reuse di_pad in the log dinode for the > high bits of the extent count fields. > > --D > >> >> /* fields only written to during inode creation */ >> xfs_log_timestamp_t di_crtime; /* time created */ >> diff --git a/fs/xfs/scrub/inode_repair.c b/fs/xfs/scrub/inode_repair.c >> index 4d773a16f886..dde6b700e891 100644 >> --- a/fs/xfs/scrub/inode_repair.c >> +++ b/fs/xfs/scrub/inode_repair.c >> @@ -736,7 +736,10 @@ xrep_dinode_zap_dfork( >> { >> trace_xrep_dinode_zap_dfork(sc, dip); >> >> - dip->di_nextents32 = 0; >> + if (xfs_sb_version_hasextcount_64bit(&sc->mp->m_sb)) >> + dip->di_nextents64 = 0; >> + else >> + dip->di_nextents32 = 0; >> >> /* Special files always get reset to DEV */ >> switch (mode & S_IFMT) { >> @@ -823,7 +826,11 @@ xrep_dinode_zap_afork( >> trace_xrep_dinode_zap_afork(sc, dip); >> >> dip->di_aformat = XFS_DINODE_FMT_EXTENTS; >> - dip->di_nextents16 = 0; >> + >> + if (xfs_sb_version_hasextcount_64bit(&sc->mp->m_sb)) >> + dip->di_nextents32 = 0; >> + else >> + dip->di_nextents16 = 0; >> >> dip->di_forkoff = 0; >> dip->di_mode = cpu_to_be16(mode & ~0777); >> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c >> index 4070fb01350c..19d525093702 100644 >> --- a/fs/xfs/xfs_inode.c >> +++ b/fs/xfs/xfs_inode.c >> @@ -2511,7 +2511,7 @@ xfs_iflush( >> ip->i_nblocks, mp, XFS_ERRTAG_IFLUSH_5)) { >> xfs_alert_tag(mp, XFS_PTAG_IFLUSH, >> "%s: detected corrupt incore inode %llu, " >> - "total extents = %llu nblocks = %lld, ptr "PTR_FMT, >> + "total extents = %llu, nblocks = %lld, ptr "PTR_FMT, >> __func__, ip->i_ino, >> ip->i_df.if_nextents + xfs_ifork_nextents(ip->i_afp), >> ip->i_nblocks, ip); >> diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c >> index f54ce7468ba1..3fa73100484b 100644 >> --- a/fs/xfs/xfs_inode_item.c >> +++ b/fs/xfs/xfs_inode_item.c >> @@ -364,6 +364,7 @@ xfs_inode_to_log_dinode( >> struct xfs_log_dinode *to, >> xfs_lsn_t lsn) >> { >> + struct xfs_sb *sbp = &ip->i_mount->m_sb; >> struct inode *inode = VFS_I(ip); >> >> to->di_magic = XFS_DINODE_MAGIC; >> @@ -385,8 +386,6 @@ xfs_inode_to_log_dinode( >> to->di_size = ip->i_disk_size; >> to->di_nblocks = ip->i_nblocks; >> to->di_extsize = ip->i_extsize; >> - to->di_nextents32 = xfs_ifork_nextents(&ip->i_df); >> - to->di_nextents16 = xfs_ifork_nextents(ip->i_afp); >> to->di_forkoff = ip->i_forkoff; >> to->di_aformat = xfs_ifork_format(ip->i_afp); >> to->di_flags = ip->i_diflags; >> @@ -402,6 +401,16 @@ xfs_inode_to_log_dinode( >> to->di_crtime = xfs_inode_to_log_dinode_ts(ip, ip->i_crtime); >> to->di_flags2 = ip->i_diflags2; >> to->di_cowextsize = ip->i_cowextsize; >> + if (xfs_sb_version_hasextcount_64bit(sbp)) { >> + to->di_nextents64 = xfs_ifork_nextents(&ip->i_df); >> + to->di_nextents32 = xfs_ifork_nextents(ip->i_afp); >> + to->di_nextents16 = 0; >> + } else { >> + to->di_nextents64 = 0; >> + to->di_nextents32 = xfs_ifork_nextents(&ip->i_df); >> + to->di_nextents16 = xfs_ifork_nextents(ip->i_afp); >> + } >> + >> to->di_ino = ip->i_ino; >> to->di_lsn = lsn; >> memset(to->di_pad2, 0, sizeof(to->di_pad2)); >> @@ -410,6 +419,8 @@ xfs_inode_to_log_dinode( >> } else { >> to->di_version = 2; >> to->di_flushiter = ip->i_flushiter; >> + to->di_nextents32 = xfs_ifork_nextents(&ip->i_df); >> + to->di_nextents16 = xfs_ifork_nextents(ip->i_afp); >> } >> } >> >> diff --git a/fs/xfs/xfs_inode_item_recover.c b/fs/xfs/xfs_inode_item_recover.c >> index 40af9d1265c7..fcf360c03bc1 100644 >> --- a/fs/xfs/xfs_inode_item_recover.c >> +++ b/fs/xfs/xfs_inode_item_recover.c >> @@ -166,8 +166,6 @@ xfs_log_dinode_to_disk( >> to->di_size = cpu_to_be64(from->di_size); >> to->di_nblocks = cpu_to_be64(from->di_nblocks); >> to->di_extsize = cpu_to_be32(from->di_extsize); >> - to->di_nextents32 = cpu_to_be32(from->di_nextents32); >> - to->di_nextents16 = cpu_to_be16(from->di_nextents16); >> to->di_forkoff = from->di_forkoff; >> to->di_aformat = from->di_aformat; >> to->di_dmevmask = cpu_to_be32(from->di_dmevmask); >> @@ -181,12 +179,17 @@ xfs_log_dinode_to_disk( >> from->di_crtime); >> to->di_flags2 = cpu_to_be64(from->di_flags2); >> to->di_cowextsize = cpu_to_be32(from->di_cowextsize); >> + to->di_nextents64 = cpu_to_be64(from->di_nextents64); >> + to->di_nextents32 = cpu_to_be32(from->di_nextents32); >> + to->di_nextents16 = cpu_to_be16(from->di_nextents16); >> to->di_ino = cpu_to_be64(from->di_ino); >> to->di_lsn = cpu_to_be64(from->di_lsn); >> memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2)); >> uuid_copy(&to->di_uuid, &from->di_uuid); >> to->di_flushiter = 0; >> } else { >> + to->di_nextents32 = cpu_to_be32(from->di_nextents32); >> + to->di_nextents16 = cpu_to_be16(from->di_nextents16); >> to->di_flushiter = cpu_to_be16(from->di_flushiter); >> } >> } >> @@ -202,6 +205,8 @@ xlog_recover_inode_commit_pass2( >> struct xfs_mount *mp = log->l_mp; >> struct xfs_buf *bp; >> struct xfs_dinode *dip; >> + xfs_extnum_t nextents; >> + xfs_aextnum_t anextents; >> int len; >> char *src; >> char *dest; >> @@ -332,16 +337,24 @@ xlog_recover_inode_commit_pass2( >> goto out_release; >> } >> } >> - if (unlikely(ldip->di_nextents32 + ldip->di_nextents16 > ldip->di_nblocks)) { >> + >> + if (xfs_sb_version_hasextcount_64bit(&mp->m_sb)) { >> + nextents = ldip->di_nextents64; >> + anextents = ldip->di_nextents32; >> + } else { >> + nextents = ldip->di_nextents32; >> + anextents = ldip->di_nextents16; >> + } >> + >> + if (unlikely(nextents + anextents > ldip->di_nblocks)) { >> XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(5)", >> XFS_ERRLEVEL_LOW, mp, ldip, >> sizeof(*ldip)); >> xfs_alert(mp, >> "%s: Bad inode log record, rec ptr "PTR_FMT", dino ptr "PTR_FMT", " >> - "dino bp "PTR_FMT", ino %Ld, total extents = %d, nblocks = %Ld", >> + "dino bp "PTR_FMT", ino %Ld, total extents = %llu, nblocks = %Ld", >> __func__, item, dip, bp, in_f->ilf_ino, >> - ldip->di_nextents32 + ldip->di_nextents16, >> - ldip->di_nblocks); >> + nextents + anextents, ldip->di_nblocks); >> error = -EFSCORRUPTED; >> goto out_release; >> } >> diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c >> index 19964b394dc4..2d44aa655f41 100644 >> --- a/fs/xfs/xfs_ioctl.c >> +++ b/fs/xfs/xfs_ioctl.c >> @@ -1901,6 +1901,9 @@ xfs_file_ioctl( >> case XFS_IOC_BULKSTAT_V5: >> return xfs_ioc_bulkstat(filp, cmd, arg, >> XFS_BULKSTAT_VERSION_V5); >> + case XFS_IOC_BULKSTAT_V6: >> + return xfs_ioc_bulkstat(filp, cmd, arg, >> + XFS_BULKSTAT_VERSION_V6); >> case XFS_IOC_INUMBERS: >> return xfs_ioc_inumbers(mp, cmd, arg, >> XFS_INUMBERS_VERSION_V5); >> -- >> 2.30.2 >> -- chandan
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index a27d57ea301c..e05898c9acbc 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -54,18 +54,16 @@ xfs_bmap_compute_maxlevels( int whichfork) /* data or attr fork */ { xfs_extnum_t maxleafents; /* max leaf entries possible */ + uint64_t maxblocks; /* max blocks at this level */ int level; /* btree level */ - uint maxblocks; /* max blocks at this level */ int maxrootrecs; /* max records in root block */ int minleafrecs; /* min records in leaf block */ int minnoderecs; /* min records in node block */ int sz; /* root block size */ /* - * The maximum number of extents in a file, hence the maximum number of - * leaf entries, is controlled by the size of the on-disk extent count, - * either a signed 32-bit number for the data fork, or a signed 16-bit - * number for the attr fork. + * The maximum number of extents in a fork, hence the maximum number of + * leaf entries, is controlled by the size of the on-disk extent count. * * Note that we can no longer assume that if we are in ATTR1 that the * fork offset of all the inodes will be diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 2362cc005cc6..3aa83d75670d 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -485,13 +485,15 @@ xfs_sb_has_ro_compat_feature( #define XFS_SB_FEAT_INCOMPAT_BIGTIME (1 << 3) /* large timestamps */ #define XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR (1 << 4) /* needs xfs_repair */ #define XFS_SB_FEAT_INCOMPAT_METADIR (1 << 5) /* metadata dir tree */ -#define XFS_SB_FEAT_INCOMPAT_ALL \ +#define XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT (1 << 6) /* 64-bit inode fork extent counter */ +#define XFS_SB_FEAT_INCOMPAT_ALL \ (XFS_SB_FEAT_INCOMPAT_FTYPE| \ XFS_SB_FEAT_INCOMPAT_SPINODES| \ XFS_SB_FEAT_INCOMPAT_META_UUID| \ XFS_SB_FEAT_INCOMPAT_BIGTIME| \ XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR| \ - XFS_SB_FEAT_INCOMPAT_METADIR) + XFS_SB_FEAT_INCOMPAT_METADIR| \ + XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT) #define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL static inline bool @@ -591,6 +593,12 @@ static inline bool xfs_sb_version_hasmetauuid(struct xfs_sb *sbp) (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_META_UUID); } +static inline bool xfs_sb_version_hasextcount_64bit(struct xfs_sb *sbp) +{ + return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) && + (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT); +} + static inline bool xfs_sb_version_hasrmapbt(struct xfs_sb *sbp) { return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) && @@ -1039,6 +1047,16 @@ typedef struct xfs_dinode { __be64 di_size; /* number of bytes in file */ __be64 di_nblocks; /* # of direct & btree blocks used */ __be32 di_extsize; /* basic/minimum extent size for file */ + + /* + * On a extcnt64bit filesystem, di_nextents64 holds the data fork + * extent count, di_nextents32 holds the attr fork extent count, + * and di_nextents16 must be zero. + * + * Otherwise, di_nextents32 holds the data fork extent count, + * di_nextents16 holds the attr fork extent count, and di_nextents64 + * must be zero. + */ __be32 di_nextents32; /* number of extents in data fork */ __be16 di_nextents16; /* number of extents in attribute fork*/ __u8 di_forkoff; /* attr fork offs, <<3 for 64b align */ @@ -1057,7 +1075,8 @@ typedef struct xfs_dinode { __be64 di_lsn; /* flush sequence */ __be64 di_flags2; /* more random flags */ __be32 di_cowextsize; /* basic cow extent size for file */ - __u8 di_pad2[12]; /* more padding for future expansion */ + __u8 di_pad2[4]; /* more padding for future expansion */ + __be64 di_nextents64; /* fields only written to during inode creation */ xfs_timestamp_t di_crtime; /* time created */ @@ -1113,6 +1132,8 @@ enum xfs_dinode_fmt { * Max values for extlen and disk inode's extent counters. */ #define MAXEXTLEN ((uint32_t)0x1fffff) /* 21 bits */ +#define XFS_IFORK_EXTCNT_MAXU48 ((uint64_t)0xffffffffffff) /* Unsigned 48-bits */ +#define XFS_IFORK_EXTCNT_MAXU32 ((uint32_t)0xffffffff) /* Unsigned 32-bits */ #define XFS_IFORK_EXTCNT_MAXS32 ((int32_t)0x7fffffff) /* Signed 32-bits */ #define XFS_IFORK_EXTCNT_MAXS16 ((int16_t)0x7fff) /* Signed 16-bits */ diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index 756be4ff5996..57f67445f095 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -858,6 +858,7 @@ struct xfs_scrub_metadata { #define XFS_IOC_BULKSTAT_V5 _IOR ('X', 127, struct xfs_bulkstat_req) #define XFS_IOC_INUMBERS _IOR ('X', 128, struct xfs_inumbers_req) /* FIEXCHANGE_RANGE ----------- hoisted 129 */ +#define XFS_IOC_BULKSTAT_V6 _IOR ('X', 130, struct xfs_bulkstat_req) /* XFS_IOC_GETFSUUID ---------- deprecated 140 */ diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c index 65d753e16007..28e49394edbb 100644 --- a/fs/xfs/libxfs/xfs_inode_buf.c +++ b/fs/xfs/libxfs/xfs_inode_buf.c @@ -291,6 +291,7 @@ xfs_inode_to_disk( struct xfs_dinode *to, xfs_lsn_t lsn) { + struct xfs_sb *sbp = &ip->i_mount->m_sb; struct inode *inode = VFS_I(ip); to->di_magic = cpu_to_be16(XFS_DINODE_MAGIC); @@ -313,8 +314,6 @@ xfs_inode_to_disk( to->di_size = cpu_to_be64(ip->i_disk_size); to->di_nblocks = cpu_to_be64(ip->i_nblocks); to->di_extsize = cpu_to_be32(ip->i_extsize); - to->di_nextents32 = cpu_to_be32(xfs_ifork_nextents(&ip->i_df)); - to->di_nextents16 = cpu_to_be16(xfs_ifork_nextents(ip->i_afp)); to->di_forkoff = ip->i_forkoff; to->di_aformat = xfs_ifork_format(ip->i_afp); to->di_flags = cpu_to_be16(ip->i_diflags); @@ -334,6 +333,19 @@ xfs_inode_to_disk( to->di_version = 2; to->di_flushiter = cpu_to_be16(ip->i_flushiter); } + + if (xfs_sb_version_hasextcount_64bit(sbp)) { + to->di_nextents64 = cpu_to_be64(xfs_ifork_nextents(&ip->i_df)); + to->di_nextents32 = cpu_to_be32(xfs_ifork_nextents(ip->i_afp)); + /* + * xchk_dinode() passes an uninitialized disk inode. Hence, + * clear di_nextents16 field explicitly. + */ + to->di_nextents16 = cpu_to_be16(0); + } else { + to->di_nextents32 = cpu_to_be32(xfs_ifork_nextents(&ip->i_df)); + to->di_nextents16 = cpu_to_be16(xfs_ifork_nextents(ip->i_afp)); + } } static xfs_failaddr_t @@ -386,14 +398,22 @@ xfs_dfork_nextents( xfs_extnum_t *nextents) { int error = 0; + bool has_64bit_extcnt; + + has_64bit_extcnt = xfs_sb_version_hasextcount_64bit(&mp->m_sb); + + if (has_64bit_extcnt && dip->di_nextents16 != 0) + return -EFSCORRUPTED; switch (whichfork) { case XFS_DATA_FORK: - *nextents = be32_to_cpu(dip->di_nextents32); + *nextents = has_64bit_extcnt ? be64_to_cpu(dip->di_nextents64) + : be32_to_cpu(dip->di_nextents32); break; case XFS_ATTR_FORK: - *nextents = be16_to_cpu(dip->di_nextents16); + *nextents = has_64bit_extcnt ? be32_to_cpu(dip->di_nextents32) + : be16_to_cpu(dip->di_nextents16); break; default: diff --git a/fs/xfs/libxfs/xfs_inode_fork.h b/fs/xfs/libxfs/xfs_inode_fork.h index 1eda2163603e..ffdd2abcd73c 100644 --- a/fs/xfs/libxfs/xfs_inode_fork.h +++ b/fs/xfs/libxfs/xfs_inode_fork.h @@ -21,9 +21,9 @@ struct xfs_ifork { void *if_root; /* extent tree root */ char *if_data; /* inline file data */ } if_u1; + xfs_extnum_t if_nextents; /* # of extents in this fork */ short if_broot_bytes; /* bytes allocated for root */ int8_t if_format; /* format of this fork */ - xfs_extnum_t if_nextents; /* # of extents in this fork */ }; /* @@ -135,10 +135,22 @@ static inline int8_t xfs_ifork_format(struct xfs_ifork *ifp) static inline xfs_extnum_t xfs_iext_max(struct xfs_mount *mp, int whichfork) { - if (whichfork == XFS_DATA_FORK || whichfork == XFS_COW_FORK) - return XFS_IFORK_EXTCNT_MAXS32; - else - return XFS_IFORK_EXTCNT_MAXS16; + bool has_64bit_extcnt = xfs_sb_version_hasextcount_64bit(&mp->m_sb); + + switch (whichfork) { + case XFS_DATA_FORK: + case XFS_COW_FORK: + return has_64bit_extcnt ? XFS_IFORK_EXTCNT_MAXU48 + : XFS_IFORK_EXTCNT_MAXS32; + + case XFS_ATTR_FORK: + return has_64bit_extcnt ? XFS_IFORK_EXTCNT_MAXU32 + : XFS_IFORK_EXTCNT_MAXS16; + + default: + ASSERT(0); + return 0; + } } struct xfs_ifork *xfs_ifork_alloc(enum xfs_dinode_fmt format, diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h index ca8e4ad8312a..9b5d64708ed1 100644 --- a/fs/xfs/libxfs/xfs_log_format.h +++ b/fs/xfs/libxfs/xfs_log_format.h @@ -420,7 +420,8 @@ struct xfs_log_dinode { xfs_lsn_t di_lsn; /* flush sequence */ uint64_t di_flags2; /* more random flags */ uint32_t di_cowextsize; /* basic cow extent size for file */ - uint8_t di_pad2[12]; /* more padding for future expansion */ + uint8_t di_pad2[4]; /* more padding for future expansion */ + uint64_t di_nextents64; /* higher part of data fork extent count */ /* fields only written to during inode creation */ xfs_log_timestamp_t di_crtime; /* time created */ diff --git a/fs/xfs/scrub/inode_repair.c b/fs/xfs/scrub/inode_repair.c index 4d773a16f886..dde6b700e891 100644 --- a/fs/xfs/scrub/inode_repair.c +++ b/fs/xfs/scrub/inode_repair.c @@ -736,7 +736,10 @@ xrep_dinode_zap_dfork( { trace_xrep_dinode_zap_dfork(sc, dip); - dip->di_nextents32 = 0; + if (xfs_sb_version_hasextcount_64bit(&sc->mp->m_sb)) + dip->di_nextents64 = 0; + else + dip->di_nextents32 = 0; /* Special files always get reset to DEV */ switch (mode & S_IFMT) { @@ -823,7 +826,11 @@ xrep_dinode_zap_afork( trace_xrep_dinode_zap_afork(sc, dip); dip->di_aformat = XFS_DINODE_FMT_EXTENTS; - dip->di_nextents16 = 0; + + if (xfs_sb_version_hasextcount_64bit(&sc->mp->m_sb)) + dip->di_nextents32 = 0; + else + dip->di_nextents16 = 0; dip->di_forkoff = 0; dip->di_mode = cpu_to_be16(mode & ~0777); diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 4070fb01350c..19d525093702 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -2511,7 +2511,7 @@ xfs_iflush( ip->i_nblocks, mp, XFS_ERRTAG_IFLUSH_5)) { xfs_alert_tag(mp, XFS_PTAG_IFLUSH, "%s: detected corrupt incore inode %llu, " - "total extents = %llu nblocks = %lld, ptr "PTR_FMT, + "total extents = %llu, nblocks = %lld, ptr "PTR_FMT, __func__, ip->i_ino, ip->i_df.if_nextents + xfs_ifork_nextents(ip->i_afp), ip->i_nblocks, ip); diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index f54ce7468ba1..3fa73100484b 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -364,6 +364,7 @@ xfs_inode_to_log_dinode( struct xfs_log_dinode *to, xfs_lsn_t lsn) { + struct xfs_sb *sbp = &ip->i_mount->m_sb; struct inode *inode = VFS_I(ip); to->di_magic = XFS_DINODE_MAGIC; @@ -385,8 +386,6 @@ xfs_inode_to_log_dinode( to->di_size = ip->i_disk_size; to->di_nblocks = ip->i_nblocks; to->di_extsize = ip->i_extsize; - to->di_nextents32 = xfs_ifork_nextents(&ip->i_df); - to->di_nextents16 = xfs_ifork_nextents(ip->i_afp); to->di_forkoff = ip->i_forkoff; to->di_aformat = xfs_ifork_format(ip->i_afp); to->di_flags = ip->i_diflags; @@ -402,6 +401,16 @@ xfs_inode_to_log_dinode( to->di_crtime = xfs_inode_to_log_dinode_ts(ip, ip->i_crtime); to->di_flags2 = ip->i_diflags2; to->di_cowextsize = ip->i_cowextsize; + if (xfs_sb_version_hasextcount_64bit(sbp)) { + to->di_nextents64 = xfs_ifork_nextents(&ip->i_df); + to->di_nextents32 = xfs_ifork_nextents(ip->i_afp); + to->di_nextents16 = 0; + } else { + to->di_nextents64 = 0; + to->di_nextents32 = xfs_ifork_nextents(&ip->i_df); + to->di_nextents16 = xfs_ifork_nextents(ip->i_afp); + } + to->di_ino = ip->i_ino; to->di_lsn = lsn; memset(to->di_pad2, 0, sizeof(to->di_pad2)); @@ -410,6 +419,8 @@ xfs_inode_to_log_dinode( } else { to->di_version = 2; to->di_flushiter = ip->i_flushiter; + to->di_nextents32 = xfs_ifork_nextents(&ip->i_df); + to->di_nextents16 = xfs_ifork_nextents(ip->i_afp); } } diff --git a/fs/xfs/xfs_inode_item_recover.c b/fs/xfs/xfs_inode_item_recover.c index 40af9d1265c7..fcf360c03bc1 100644 --- a/fs/xfs/xfs_inode_item_recover.c +++ b/fs/xfs/xfs_inode_item_recover.c @@ -166,8 +166,6 @@ xfs_log_dinode_to_disk( to->di_size = cpu_to_be64(from->di_size); to->di_nblocks = cpu_to_be64(from->di_nblocks); to->di_extsize = cpu_to_be32(from->di_extsize); - to->di_nextents32 = cpu_to_be32(from->di_nextents32); - to->di_nextents16 = cpu_to_be16(from->di_nextents16); to->di_forkoff = from->di_forkoff; to->di_aformat = from->di_aformat; to->di_dmevmask = cpu_to_be32(from->di_dmevmask); @@ -181,12 +179,17 @@ xfs_log_dinode_to_disk( from->di_crtime); to->di_flags2 = cpu_to_be64(from->di_flags2); to->di_cowextsize = cpu_to_be32(from->di_cowextsize); + to->di_nextents64 = cpu_to_be64(from->di_nextents64); + to->di_nextents32 = cpu_to_be32(from->di_nextents32); + to->di_nextents16 = cpu_to_be16(from->di_nextents16); to->di_ino = cpu_to_be64(from->di_ino); to->di_lsn = cpu_to_be64(from->di_lsn); memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2)); uuid_copy(&to->di_uuid, &from->di_uuid); to->di_flushiter = 0; } else { + to->di_nextents32 = cpu_to_be32(from->di_nextents32); + to->di_nextents16 = cpu_to_be16(from->di_nextents16); to->di_flushiter = cpu_to_be16(from->di_flushiter); } } @@ -202,6 +205,8 @@ xlog_recover_inode_commit_pass2( struct xfs_mount *mp = log->l_mp; struct xfs_buf *bp; struct xfs_dinode *dip; + xfs_extnum_t nextents; + xfs_aextnum_t anextents; int len; char *src; char *dest; @@ -332,16 +337,24 @@ xlog_recover_inode_commit_pass2( goto out_release; } } - if (unlikely(ldip->di_nextents32 + ldip->di_nextents16 > ldip->di_nblocks)) { + + if (xfs_sb_version_hasextcount_64bit(&mp->m_sb)) { + nextents = ldip->di_nextents64; + anextents = ldip->di_nextents32; + } else { + nextents = ldip->di_nextents32; + anextents = ldip->di_nextents16; + } + + if (unlikely(nextents + anextents > ldip->di_nblocks)) { XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(5)", XFS_ERRLEVEL_LOW, mp, ldip, sizeof(*ldip)); xfs_alert(mp, "%s: Bad inode log record, rec ptr "PTR_FMT", dino ptr "PTR_FMT", " - "dino bp "PTR_FMT", ino %Ld, total extents = %d, nblocks = %Ld", + "dino bp "PTR_FMT", ino %Ld, total extents = %llu, nblocks = %Ld", __func__, item, dip, bp, in_f->ilf_ino, - ldip->di_nextents32 + ldip->di_nextents16, - ldip->di_nblocks); + nextents + anextents, ldip->di_nblocks); error = -EFSCORRUPTED; goto out_release; } diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index 19964b394dc4..2d44aa655f41 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -1901,6 +1901,9 @@ xfs_file_ioctl( case XFS_IOC_BULKSTAT_V5: return xfs_ioc_bulkstat(filp, cmd, arg, XFS_BULKSTAT_VERSION_V5); + case XFS_IOC_BULKSTAT_V6: + return xfs_ioc_bulkstat(filp, cmd, arg, + XFS_BULKSTAT_VERSION_V6); case XFS_IOC_INUMBERS: return xfs_ioc_inumbers(mp, cmd, arg, XFS_INUMBERS_VERSION_V5);
This commit adds a new 64-bit per-inode data extent counter. However the maximum number of extents that a data fork can hold is limited to 2^48 extents. This feature is available only when XFS_SB_FEAT_INCOMPAT_EXTCOUNT_64BIT feature bit is enabled on the filesystem. Also, enabling this feature bit causes attr fork extent counter to use the 32-bit extent counter that was previously used to hold the data fork extent counter. This implies that the attr fork can now occupy a maximum of 2^32 extents. This commit also exposes the newly introduced XFS_IOC_BULKSTAT_V6 ioctl interface to user space. Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com> --- fs/xfs/libxfs/xfs_bmap.c | 8 +++----- fs/xfs/libxfs/xfs_format.h | 27 ++++++++++++++++++++++++--- fs/xfs/libxfs/xfs_fs.h | 1 + fs/xfs/libxfs/xfs_inode_buf.c | 28 ++++++++++++++++++++++++---- fs/xfs/libxfs/xfs_inode_fork.h | 22 +++++++++++++++++----- fs/xfs/libxfs/xfs_log_format.h | 3 ++- fs/xfs/scrub/inode_repair.c | 11 +++++++++-- fs/xfs/xfs_inode.c | 2 +- fs/xfs/xfs_inode_item.c | 15 +++++++++++++-- fs/xfs/xfs_inode_item_recover.c | 25 +++++++++++++++++++------ fs/xfs/xfs_ioctl.c | 3 +++ 11 files changed, 116 insertions(+), 29 deletions(-)