This patch adds support for 32bit project quota identifiers. On disk format is backward compatible with 16bit projid numbers. projid on disk is now keept in two 16bit values - di_projid_lo (which holds the same position as old 16bit projid value) and new di_projid_hi (takes existing padding) and convertes from/to 32bit value on the fly. xfs_admin (for existing fs), mkfs.xfs (for new fs) needs to be used to enable PROJID32BIT support. Signed-off-by: Arkadiusz MiÅkiewicz <arekm@xxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> --- News: - use 0x80 instead of 0x20 for PROJID32BIT superblock bit (as 0x20 and 0x40 are reserved) - style fix fs/xfs/linux-2.6/xfs_ioctl.c | 14 +++++++------- fs/xfs/linux-2.6/xfs_ioctl32.c | 2 ++ fs/xfs/linux-2.6/xfs_ioctl32.h | 5 +++-- fs/xfs/linux-2.6/xfs_linux.h | 2 +- fs/xfs/quota/xfs_qm.c | 12 ++++++------ fs/xfs/quota/xfs_qm_bhv.c | 2 +- fs/xfs/quota/xfs_qm_syscalls.c | 2 +- fs/xfs/xfs_dinode.h | 5 +++-- fs/xfs/xfs_fs.h | 5 +++-- fs/xfs/xfs_inode.c | 14 ++++++++------ fs/xfs/xfs_inode.h | 26 +++++++++++++++++++++++--- fs/xfs/xfs_itable.c | 3 ++- fs/xfs/xfs_rename.c | 2 +- fs/xfs/xfs_sb.h | 10 +++++++++- fs/xfs/xfs_types.h | 2 -- fs/xfs/xfs_vnodeops.c | 16 ++++++++-------- 16 files changed, 78 insertions(+), 44 deletions(-) diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c index 4fec427..30dd78f 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ b/fs/xfs/linux-2.6/xfs_ioctl.c @@ -788,7 +788,7 @@ xfs_ioc_fsgetxattr( xfs_ilock(ip, XFS_ILOCK_SHARED); fa.fsx_xflags = xfs_ip2xflags(ip); fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; - fa.fsx_projid = ip->i_d.di_projid; + fa.fsx_projid = xfs_get_projid(ip); if (attr) { if (ip->i_afp) { @@ -907,10 +907,10 @@ xfs_ioctl_setattr( return XFS_ERROR(EIO); /* - * Disallow 32bit project ids because on-disk structure - * is 16bit only. + * Disallow 32bit project ids when projid32bit feature is not enabled. */ - if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1)) + if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && + !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) return XFS_ERROR(EINVAL); /* @@ -959,7 +959,7 @@ xfs_ioctl_setattr( if (mask & FSX_PROJID) { if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && - ip->i_d.di_projid != fa->fsx_projid) { + xfs_get_projid(ip) != fa->fsx_projid) { ASSERT(tp); code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, capable(CAP_FOWNER) ? @@ -1061,12 +1061,12 @@ xfs_ioctl_setattr( * Change the ownerships and register quota modifications * in the transaction. */ - if (ip->i_d.di_projid != fa->fsx_projid) { + if (xfs_get_projid(ip) != fa->fsx_projid) { if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { olddquot = xfs_qm_vop_chown(tp, ip, &ip->i_gdquot, gdqp); } - ip->i_d.di_projid = fa->fsx_projid; + xfs_set_projid(ip, fa->fsx_projid); /* * We may have to rev the inode as well as diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c index 6c83f7f..1124157 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl32.c +++ b/fs/xfs/linux-2.6/xfs_ioctl32.c @@ -165,6 +165,7 @@ xfs_ioctl32_bstat_copyin( get_user(bstat->bs_extents, &bstat32->bs_extents) || get_user(bstat->bs_gen, &bstat32->bs_gen) || get_user(bstat->bs_projid, &bstat32->bs_projid) || + get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) || get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) || get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) || get_user(bstat->bs_aextents, &bstat32->bs_aextents)) @@ -218,6 +219,7 @@ xfs_bulkstat_one_fmt_compat( put_user(buffer->bs_extents, &p32->bs_extents) || put_user(buffer->bs_gen, &p32->bs_gen) || put_user(buffer->bs_projid, &p32->bs_projid) || + put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) || put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) || put_user(buffer->bs_dmstate, &p32->bs_dmstate) || put_user(buffer->bs_aextents, &p32->bs_aextents)) diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.h b/fs/xfs/linux-2.6/xfs_ioctl32.h index 1024c4f..f92d662 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl32.h +++ b/fs/xfs/linux-2.6/xfs_ioctl32.h @@ -65,8 +65,9 @@ typedef struct compat_xfs_bstat { __s32 bs_extsize; /* extent size */ __s32 bs_extents; /* number of extents */ __u32 bs_gen; /* generation count */ - __u16 bs_projid; /* project id */ - unsigned char bs_pad[14]; /* pad space, unused */ + __u16 bs_projid; /* lower part of project id */ + __u16 bs_projid_hi; /* high part of project id */ + unsigned char bs_pad[12]; /* pad space, unused */ __u32 bs_dmevmask; /* DMIG event mask */ __u16 bs_dmstate; /* DMIG state info */ __u16 bs_aextents; /* attribute number of extents */ diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index 2fa0bd9..844b9a9 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -144,7 +144,7 @@ #define SYNCHRONIZE() barrier() #define __return_address __builtin_return_address(0) -#define dfltprid 0 +#define XFS_PROJID_DEFAULT 0 #define MAXPATHLEN 1024 #define MIN(a,b) (min(a,b)) diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c index 9a92407..9a8885e 100644 --- a/fs/xfs/quota/xfs_qm.c +++ b/fs/xfs/quota/xfs_qm.c @@ -837,7 +837,7 @@ xfs_qm_dqattach_locked( xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, flags & XFS_QMOPT_DQALLOC, ip->i_udquot, &ip->i_gdquot) : - xfs_qm_dqattach_one(ip, ip->i_d.di_projid, XFS_DQ_PROJ, + xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, flags & XFS_QMOPT_DQALLOC, ip->i_udquot, &ip->i_gdquot); /* @@ -1248,7 +1248,7 @@ xfs_qm_dqget_noattach( XFS_QMOPT_DQALLOC|XFS_QMOPT_DOWARN, &gdqp) : xfs_qm_dqget(mp, ip, - ip->i_d.di_projid, XFS_DQ_PROJ, + xfs_get_projid(ip), XFS_DQ_PROJ, XFS_QMOPT_DQALLOC|XFS_QMOPT_DOWARN, &gdqp); if (error) { @@ -2332,9 +2332,9 @@ xfs_qm_vop_dqalloc( xfs_dqunlock(gq); } } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { - if (ip->i_d.di_projid != prid) { + if (xfs_get_projid(ip) != prid) { xfs_iunlock(ip, lockflags); - if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, + if ((error = xfs_qm_dqget(mp, NULL, prid, XFS_DQ_PROJ, XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, @@ -2454,7 +2454,7 @@ xfs_qm_vop_chown_reserve( } if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { if (XFS_IS_PQUOTA_ON(ip->i_mount) && - ip->i_d.di_projid != be32_to_cpu(gdqp->q_core.d_id)) + xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) prjflags = XFS_QMOPT_ENOSPC; if (prjflags || @@ -2558,7 +2558,7 @@ xfs_qm_vop_create_dqattach( ip->i_gdquot = gdqp; ASSERT(XFS_IS_OQUOTA_ON(mp)); ASSERT((XFS_IS_GQUOTA_ON(mp) ? - ip->i_d.di_gid : ip->i_d.di_projid) == + ip->i_d.di_gid : xfs_get_projid(ip)) == be32_to_cpu(gdqp->q_core.d_id)); xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); } diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c index bea02d7..45b5cb1 100644 --- a/fs/xfs/quota/xfs_qm_bhv.c +++ b/fs/xfs/quota/xfs_qm_bhv.c @@ -81,7 +81,7 @@ xfs_qm_statvfs( xfs_mount_t *mp = ip->i_mount; xfs_dquot_t *dqp; - if (!xfs_qm_dqget(mp, NULL, ip->i_d.di_projid, XFS_DQ_PROJ, 0, &dqp)) { + if (!xfs_qm_dqget(mp, NULL, xfs_get_projid(ip), XFS_DQ_PROJ, 0, &dqp)) { xfs_fill_statvfs_from_dquot(statp, &dqp->q_core); xfs_qm_dqput(dqp); } diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c index 45e5849..a89065b 100644 --- a/fs/xfs/quota/xfs_qm_syscalls.c +++ b/fs/xfs/quota/xfs_qm_syscalls.c @@ -1175,7 +1175,7 @@ xfs_qm_internalqcheck_adjust( } xfs_qm_internalqcheck_get_dquots(mp, (xfs_dqid_t) ip->i_d.di_uid, - (xfs_dqid_t) ip->i_d.di_projid, + (xfs_dqid_t) xfs_get_projid(ip), (xfs_dqid_t) ip->i_d.di_gid, &ud, &gd); if (XFS_IS_UQUOTA_ON(mp)) { diff --git a/fs/xfs/xfs_dinode.h b/fs/xfs/xfs_dinode.h index e5b153b..dffba9b 100644 --- a/fs/xfs/xfs_dinode.h +++ b/fs/xfs/xfs_dinode.h @@ -49,8 +49,9 @@ typedef struct xfs_dinode { __be32 di_uid; /* owner's user id */ __be32 di_gid; /* owner's group id */ __be32 di_nlink; /* number of links to file */ - __be16 di_projid; /* owner's project id */ - __u8 di_pad[8]; /* unused, zeroed space */ + __be16 di_projid_lo; /* lower part of owner's project id */ + __be16 di_projid_hi; /* higher part owner's project id */ + __u8 di_pad[6]; /* unused, zeroed space */ __be16 di_flushiter; /* incremented on flush */ xfs_timestamp_t di_atime; /* time last accessed */ xfs_timestamp_t di_mtime; /* time last modified */ diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h index 87c2e9d..ae1c500 100644 --- a/fs/xfs/xfs_fs.h +++ b/fs/xfs/xfs_fs.h @@ -293,9 +293,10 @@ typedef struct xfs_bstat { __s32 bs_extsize; /* extent size */ __s32 bs_extents; /* number of extents */ __u32 bs_gen; /* generation count */ - __u16 bs_projid; /* project id */ + __u16 bs_projid; /* lower part of project id */ __u16 bs_forkoff; /* inode fork offset in bytes */ - unsigned char bs_pad[12]; /* pad space, unused */ + __u16 bs_projid_hi; /* higher part of project id */ + unsigned char bs_pad[10]; /* pad space, unused */ __u32 bs_dmevmask; /* DMIG event mask */ __u16 bs_dmstate; /* DMIG state info */ __u16 bs_aextents; /* attribute number of extents */ diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 34798f3..2ab5959 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -660,7 +660,8 @@ xfs_dinode_from_disk( to->di_uid = be32_to_cpu(from->di_uid); to->di_gid = be32_to_cpu(from->di_gid); to->di_nlink = be32_to_cpu(from->di_nlink); - to->di_projid = be16_to_cpu(from->di_projid); + to->di_projid_lo = be16_to_cpu(from->di_projid_lo); + to->di_projid_hi = be16_to_cpu(from->di_projid_hi); memcpy(to->di_pad, from->di_pad, sizeof(to->di_pad)); to->di_flushiter = be16_to_cpu(from->di_flushiter); to->di_atime.t_sec = be32_to_cpu(from->di_atime.t_sec); @@ -695,7 +696,8 @@ xfs_dinode_to_disk( to->di_uid = cpu_to_be32(from->di_uid); to->di_gid = cpu_to_be32(from->di_gid); to->di_nlink = cpu_to_be32(from->di_nlink); - to->di_projid = cpu_to_be16(from->di_projid); + to->di_projid_lo = cpu_to_be16(from->di_projid_lo); + to->di_projid_hi = cpu_to_be16(from->di_projid_hi); memcpy(to->di_pad, from->di_pad, sizeof(to->di_pad)); to->di_flushiter = cpu_to_be16(from->di_flushiter); to->di_atime.t_sec = cpu_to_be32(from->di_atime.t_sec); @@ -874,7 +876,7 @@ xfs_iread( if (ip->i_d.di_version == 1) { ip->i_d.di_nlink = ip->i_d.di_onlink; ip->i_d.di_onlink = 0; - ip->i_d.di_projid = 0; + xfs_set_projid(ip, 0); } ip->i_delayed_blks = 0; @@ -983,7 +985,7 @@ xfs_ialloc( xfs_nlink_t nlink, xfs_dev_t rdev, cred_t *cr, - xfs_prid_t prid, + prid_t prid, int okalloc, xfs_buf_t **ialloc_context, boolean_t *call_again, @@ -1027,7 +1029,7 @@ xfs_ialloc( ASSERT(ip->i_d.di_nlink == nlink); ip->i_d.di_uid = current_fsuid(); ip->i_d.di_gid = current_fsgid(); - ip->i_d.di_projid = prid; + xfs_set_projid(ip, prid); memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad)); /* @@ -3008,7 +3010,7 @@ xfs_iflush_int( memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad)); memset(&(dip->di_pad[0]), 0, sizeof(dip->di_pad)); - ASSERT(ip->i_d.di_projid == 0); + ASSERT(xfs_get_projid(ip) == 0); } } diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 0898c54..2a7343a 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -134,8 +134,9 @@ typedef struct xfs_icdinode { __uint32_t di_uid; /* owner's user id */ __uint32_t di_gid; /* owner's group id */ __uint32_t di_nlink; /* number of links to file */ - __uint16_t di_projid; /* owner's project id */ - __uint8_t di_pad[8]; /* unused, zeroed space */ + __uint16_t di_projid_lo; /* lower part of owner's project id */ + __uint16_t di_projid_hi; /* higher part of owner's project id */ + __uint8_t di_pad[6]; /* unused, zeroed space */ __uint16_t di_flushiter; /* incremented on flush */ xfs_ictimestamp_t di_atime; /* time last accessed */ xfs_ictimestamp_t di_mtime; /* time last modified */ @@ -335,6 +336,25 @@ xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) } /* + * Project quota id helpers (previously projid was 16bit only + * and using two 16bit values to hold new 32bit projid was choosen + * to retain compatibility with "old" filesystems). + */ +static inline prid_t +xfs_get_projid(struct xfs_inode *ip) +{ + return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo; +} + +static inline void +xfs_set_projid(struct xfs_inode *ip, + prid_t projid) +{ + ip->i_d.di_projid_hi = (__uint16_t) (projid >> 16); + ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff); +} + +/* * Manage the i_flush queue embedded in the inode. This completion * queue synchronizes processes attempting to flush the in-core * inode back to disk. @@ -456,7 +476,7 @@ void xfs_inode_free(struct xfs_inode *ip); * xfs_inode.c prototypes. */ int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, - xfs_nlink_t, xfs_dev_t, cred_t *, xfs_prid_t, + xfs_nlink_t, xfs_dev_t, cred_t *, prid_t, int, struct xfs_buf **, boolean_t *, xfs_inode_t **); uint xfs_ip2xflags(struct xfs_inode *); diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index 7e3626e..178b54b 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -92,7 +92,8 @@ xfs_bulkstat_one_int( * further change. */ buf->bs_nlink = dic->di_nlink; - buf->bs_projid = dic->di_projid; + buf->bs_projid = dic->di_projid_lo; + buf->bs_projid_hi = dic->di_projid_hi; buf->bs_ino = ino; buf->bs_mode = dic->di_mode; buf->bs_uid = dic->di_uid; diff --git a/fs/xfs/xfs_rename.c b/fs/xfs/xfs_rename.c index 8fca957..494b5cd 100644 --- a/fs/xfs/xfs_rename.c +++ b/fs/xfs/xfs_rename.c @@ -183,7 +183,7 @@ xfs_rename( * tree quota mechanism would be circumvented. */ if (unlikely((target_dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && - (target_dp->i_d.di_projid != src_ip->i_d.di_projid))) { + (xfs_get_projid(target_dp) != xfs_get_projid(src_ip)))) { error = XFS_ERROR(EXDEV); goto error_return; } diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h index 1b017c6..1eb2ba5 100644 --- a/fs/xfs/xfs_sb.h +++ b/fs/xfs/xfs_sb.h @@ -80,10 +80,12 @@ struct xfs_mount; #define XFS_SB_VERSION2_RESERVED4BIT 0x00000004 #define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */ #define XFS_SB_VERSION2_PARENTBIT 0x00000010 /* parent pointers */ +#define XFS_SB_VERSION2_PROJID32BIT 0x00000080 /* 32 bit project id */ #define XFS_SB_VERSION2_OKREALFBITS \ (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \ - XFS_SB_VERSION2_ATTR2BIT) + XFS_SB_VERSION2_ATTR2BIT | \ + XFS_SB_VERSION2_PROJID32BIT) #define XFS_SB_VERSION2_OKSASHFBITS \ (0) #define XFS_SB_VERSION2_OKREALBITS \ @@ -495,6 +497,12 @@ static inline void xfs_sb_version_removeattr2(xfs_sb_t *sbp) sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT; } +static inline int xfs_sb_version_hasprojid32bit(xfs_sb_t *sbp) +{ + return xfs_sb_version_hasmorebits(sbp) && + (sbp->sb_features2 & XFS_SB_VERSION2_PROJID32BIT); +} + /* * end of superblock version macros */ diff --git a/fs/xfs/xfs_types.h b/fs/xfs/xfs_types.h index 3207752..26d1867 100644 --- a/fs/xfs/xfs_types.h +++ b/fs/xfs/xfs_types.h @@ -73,8 +73,6 @@ typedef __int32_t xfs_tid_t; /* transaction identifier */ typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */ typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */ -typedef __uint16_t xfs_prid_t; /* prid_t truncated to 16bits in XFS */ - typedef __uint32_t xlog_tid_t; /* transaction ID type */ /* diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 4c7c7bf..e4166ec 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -114,7 +114,7 @@ xfs_setattr( */ ASSERT(udqp == NULL); ASSERT(gdqp == NULL); - code = xfs_qm_vop_dqalloc(ip, uid, gid, ip->i_d.di_projid, + code = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip), qflags, &udqp, &gdqp); if (code) return code; @@ -1266,7 +1266,7 @@ xfs_create( boolean_t unlock_dp_on_error = B_FALSE; uint cancel_flags; int committed; - xfs_prid_t prid; + prid_t prid; struct xfs_dquot *udqp = NULL; struct xfs_dquot *gdqp = NULL; uint resblks; @@ -1279,9 +1279,9 @@ xfs_create( return XFS_ERROR(EIO); if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) - prid = dp->i_d.di_projid; + prid = xfs_get_projid(dp); else - prid = dfltprid; + prid = XFS_PROJID_DEFAULT; /* * Make sure that we have allocated dquot(s) on disk. @@ -1880,7 +1880,7 @@ xfs_link( * the tree quota mechanism could be circumvented. */ if (unlikely((tdp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && - (tdp->i_d.di_projid != sip->i_d.di_projid))) { + (xfs_get_projid(tdp) != xfs_get_projid(sip)))) { error = XFS_ERROR(EXDEV); goto error_return; } @@ -1955,7 +1955,7 @@ xfs_symlink( int byte_cnt; int n; xfs_buf_t *bp; - xfs_prid_t prid; + prid_t prid; struct xfs_dquot *udqp, *gdqp; uint resblks; @@ -1978,9 +1978,9 @@ xfs_symlink( udqp = gdqp = NULL; if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) - prid = dp->i_d.di_projid; + prid = xfs_get_projid(dp); else - prid = (xfs_prid_t)dfltprid; + prid = XFS_PROJID_DEFAULT; /* * Make sure that we have allocated dquot(s) on disk. -- 1.7.3 _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs