| /* |
| * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| #include "xfs.h" |
| #include "xfs_bit.h" |
| #include "xfs_log.h" |
| #include "xfs_clnt.h" |
| #include "xfs_inum.h" |
| #include "xfs_trans.h" |
| #include "xfs_sb.h" |
| #include "xfs_ag.h" |
| #include "xfs_dir2.h" |
| #include "xfs_alloc.h" |
| #include "xfs_dmapi.h" |
| #include "xfs_quota.h" |
| #include "xfs_mount.h" |
| #include "xfs_bmap_btree.h" |
| #include "xfs_alloc_btree.h" |
| #include "xfs_ialloc_btree.h" |
| #include "xfs_dir2_sf.h" |
| #include "xfs_attr_sf.h" |
| #include "xfs_dinode.h" |
| #include "xfs_inode.h" |
| #include "xfs_btree.h" |
| #include "xfs_ialloc.h" |
| #include "xfs_bmap.h" |
| #include "xfs_rtalloc.h" |
| #include "xfs_error.h" |
| #include "xfs_itable.h" |
| #include "xfs_fsops.h" |
| #include "xfs_rw.h" |
| #include "xfs_acl.h" |
| #include "xfs_attr.h" |
| #include "xfs_buf_item.h" |
| #include "xfs_utils.h" |
| #include "xfs_vnodeops.h" |
| #include "xfs_vfsops.h" |
| #include "xfs_version.h" |
| #include "xfs_log_priv.h" |
| #include "xfs_trans_priv.h" |
| #include "xfs_filestream.h" |
| |
| #include <linux/namei.h> |
| #include <linux/init.h> |
| #include <linux/mount.h> |
| #include <linux/mempool.h> |
| #include <linux/writeback.h> |
| #include <linux/kthread.h> |
| #include <linux/freezer.h> |
| |
| static struct quotactl_ops xfs_quotactl_operations; |
| static struct super_operations xfs_super_operations; |
| static kmem_zone_t *xfs_vnode_zone; |
| static kmem_zone_t *xfs_ioend_zone; |
| mempool_t *xfs_ioend_pool; |
| |
| STATIC struct xfs_mount_args * |
| xfs_args_allocate( |
| struct super_block *sb, |
| int silent) |
| { |
| struct xfs_mount_args *args; |
| |
| args = kzalloc(sizeof(struct xfs_mount_args), GFP_KERNEL); |
| if (!args) |
| return NULL; |
| |
| args->logbufs = args->logbufsize = -1; |
| strncpy(args->fsname, sb->s_id, MAXNAMELEN); |
| |
| /* Copy the already-parsed mount(2) flags we're interested in */ |
| if (sb->s_flags & MS_DIRSYNC) |
| args->flags |= XFSMNT_DIRSYNC; |
| if (sb->s_flags & MS_SYNCHRONOUS) |
| args->flags |= XFSMNT_WSYNC; |
| if (silent) |
| args->flags |= XFSMNT_QUIET; |
| args->flags |= XFSMNT_32BITINODES; |
| |
| return args; |
| } |
| |
| #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
| #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ |
| #define MNTOPT_LOGDEV "logdev" /* log device */ |
| #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ |
| #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ |
| #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ |
| #define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */ |
| #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
| #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ |
| #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ |
| #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ |
| #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ |
| #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ |
| #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ |
| #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ |
| #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ |
| #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ |
| #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ |
| #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ |
| #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and |
| * unwritten extent conversion */ |
| #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ |
| #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */ |
| #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ |
| #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ |
| #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ |
| #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ |
| #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes |
| * in stat(). */ |
| #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ |
| #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ |
| #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ |
| #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ |
| #define MNTOPT_NOQUOTA "noquota" /* no quotas */ |
| #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ |
| #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ |
| #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ |
| #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ |
| #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ |
| #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ |
| #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ |
| #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ |
| #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ |
| #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ |
| #define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */ |
| #define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */ |
| #define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */ |
| |
| STATIC unsigned long |
| suffix_strtoul(char *s, char **endp, unsigned int base) |
| { |
| int last, shift_left_factor = 0; |
| char *value = s; |
| |
| last = strlen(value) - 1; |
| if (value[last] == 'K' || value[last] == 'k') { |
| shift_left_factor = 10; |
| value[last] = '\0'; |
| } |
| if (value[last] == 'M' || value[last] == 'm') { |
| shift_left_factor = 20; |
| value[last] = '\0'; |
| } |
| if (value[last] == 'G' || value[last] == 'g') { |
| shift_left_factor = 30; |
| value[last] = '\0'; |
| } |
| |
| return simple_strtoul((const char *)s, endp, base) << shift_left_factor; |
| } |
| |
| STATIC int |
| xfs_parseargs( |
| struct xfs_mount *mp, |
| char *options, |
| struct xfs_mount_args *args, |
| int update) |
| { |
| char *this_char, *value, *eov; |
| int dsunit, dswidth, vol_dsunit, vol_dswidth; |
| int iosize; |
| int dmapi_implies_ikeep = 1; |
| |
| args->flags |= XFSMNT_BARRIER; |
| args->flags2 |= XFSMNT2_COMPAT_IOSIZE; |
| |
| if (!options) |
| goto done; |
| |
| iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0; |
| |
| while ((this_char = strsep(&options, ",")) != NULL) { |
| if (!*this_char) |
| continue; |
| if ((value = strchr(this_char, '=')) != NULL) |
| *value++ = 0; |
| |
| if (!strcmp(this_char, MNTOPT_LOGBUFS)) { |
| if (!value || !*value) { |
| cmn_err(CE_WARN, |
| "XFS: %s option requires an argument", |
| this_char); |
| return EINVAL; |
| } |
| args->logbufs = simple_strtoul(value, &eov, 10); |
| } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
| if (!value || !*value) { |
| cmn_err(CE_WARN, |
| "XFS: %s option requires an argument", |
| this_char); |
| return EINVAL; |
| } |
| args->logbufsize = suffix_strtoul(value, &eov, 10); |
| } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
| if (!value || !*value) { |
| cmn_err(CE_WARN, |
| "XFS: %s option requires an argument", |
| this_char); |
| return EINVAL; |
| } |
| strncpy(args->logname, value, MAXNAMELEN); |
| } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
| if (!value || !*value) { |
| cmn_err(CE_WARN, |
| "XFS: %s option requires an argument", |
| this_char); |
| return EINVAL; |
| } |
| strncpy(args->mtpt, value, MAXNAMELEN); |
| } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
| if (!value || !*value) { |
| cmn_err(CE_WARN, |
| "XFS: %s option requires an argument", |
| this_char); |
| return EINVAL; |
| } |
| strncpy(args->rtname, value, MAXNAMELEN); |
| } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
| if (!value || !*value) { |
| cmn_err(CE_WARN, |
| "XFS: %s option requires an argument", |
| this_char); |
| return EINVAL; |
| } |
| iosize = simple_strtoul(value, &eov, 10); |
| args->flags |= XFSMNT_IOSIZE; |
| args->iosizelog = (uint8_t) iosize; |
| } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
| if (!value || !*value) { |
| cmn_err(CE_WARN, |
| "XFS: %s option requires an argument", |
| this_char); |
| return EINVAL; |
| } |
| iosize = suffix_strtoul(value, &eov, 10); |
| args->flags |= XFSMNT_IOSIZE; |
| args->iosizelog = ffs(iosize) - 1; |
| } else if (!strcmp(this_char, MNTOPT_GRPID) || |
| !strcmp(this_char, MNTOPT_BSDGROUPS)) { |
| mp->m_flags |= XFS_MOUNT_GRPID; |
| } else if (!strcmp(this_char, MNTOPT_NOGRPID) || |
| !strcmp(this_char, MNTOPT_SYSVGROUPS)) { |
| mp->m_flags &= ~XFS_MOUNT_GRPID; |
| } else if (!strcmp(this_char, MNTOPT_WSYNC)) { |
| args->flags |= XFSMNT_WSYNC; |
| } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { |
| args->flags |= XFSMNT_OSYNCISOSYNC; |
| } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
| args->flags |= XFSMNT_NORECOVERY; |
| } else if (!strcmp(this_char, MNTOPT_INO64)) { |
| args->flags |= XFSMNT_INO64; |
| #if !XFS_BIG_INUMS |
| cmn_err(CE_WARN, |
| "XFS: %s option not allowed on this system", |
| this_char); |
| return EINVAL; |
| #endif |
| } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
| args->flags |= XFSMNT_NOALIGN; |
| } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
| args->flags |= XFSMNT_SWALLOC; |
| } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
| if (!value || !*value) { |
| cmn_err(CE_WARN, |
| "XFS: %s option requires an argument", |
| this_char); |
| return EINVAL; |
| } |
| dsunit = simple_strtoul(value, &eov, 10); |
| } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { |
| if (!value || !*value) { |
| cmn_err(CE_WARN, |
| "XFS: %s option requires an argument", |
| this_char); |
| return EINVAL; |
| } |
| dswidth = simple_strtoul(value, &eov, 10); |
| } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |
| args->flags &= ~XFSMNT_32BITINODES; |
| #if !XFS_BIG_INUMS |
| cmn_err(CE_WARN, |
| "XFS: %s option not allowed on this system", |
| this_char); |
| return EINVAL; |
| #endif |
| } else if (!strcmp(this_char, MNTOPT_NOUUID)) { |
| args->flags |= XFSMNT_NOUUID; |
| } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
| args->flags |= XFSMNT_BARRIER; |
| } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
| args->flags &= ~XFSMNT_BARRIER; |
| } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
| args->flags |= XFSMNT_IKEEP; |
| } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
| dmapi_implies_ikeep = 0; |
| args->flags &= ~XFSMNT_IKEEP; |
| } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
| args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE; |
| } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
| args->flags2 |= XFSMNT2_COMPAT_IOSIZE; |
| } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
| args->flags |= XFSMNT_ATTR2; |
| } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
| args->flags &= ~XFSMNT_ATTR2; |
| args->flags |= XFSMNT_NOATTR2; |
| } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
| args->flags2 |= XFSMNT2_FILESTREAMS; |
| } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
| args->flags &= ~(XFSMNT_UQUOTAENF|XFSMNT_UQUOTA); |
| args->flags &= ~(XFSMNT_GQUOTAENF|XFSMNT_GQUOTA); |
| } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
| !strcmp(this_char, MNTOPT_UQUOTA) || |
| !strcmp(this_char, MNTOPT_USRQUOTA)) { |
| args->flags |= XFSMNT_UQUOTA | XFSMNT_UQUOTAENF; |
| } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
| !strcmp(this_char, MNTOPT_UQUOTANOENF)) { |
| args->flags |= XFSMNT_UQUOTA; |
| args->flags &= ~XFSMNT_UQUOTAENF; |
| } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
| !strcmp(this_char, MNTOPT_PRJQUOTA)) { |
| args->flags |= XFSMNT_PQUOTA | XFSMNT_PQUOTAENF; |
| } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
| args->flags |= XFSMNT_PQUOTA; |
| args->flags &= ~XFSMNT_PQUOTAENF; |
| } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
| !strcmp(this_char, MNTOPT_GRPQUOTA)) { |
| args->flags |= XFSMNT_GQUOTA | XFSMNT_GQUOTAENF; |
| } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
| args->flags |= XFSMNT_GQUOTA; |
| args->flags &= ~XFSMNT_GQUOTAENF; |
| } else if (!strcmp(this_char, MNTOPT_DMAPI)) { |
| args->flags |= XFSMNT_DMAPI; |
| } else if (!strcmp(this_char, MNTOPT_XDSM)) { |
| args->flags |= XFSMNT_DMAPI; |
| } else if (!strcmp(this_char, MNTOPT_DMI)) { |
| args->flags |= XFSMNT_DMAPI; |
| } else if (!strcmp(this_char, "ihashsize")) { |
| cmn_err(CE_WARN, |
| "XFS: ihashsize no longer used, option is deprecated."); |
| } else if (!strcmp(this_char, "osyncisdsync")) { |
| /* no-op, this is now the default */ |
| cmn_err(CE_WARN, |
| "XFS: osyncisdsync is now the default, option is deprecated."); |
| } else if (!strcmp(this_char, "irixsgid")) { |
| cmn_err(CE_WARN, |
| "XFS: irixsgid is now a sysctl(2) variable, option is deprecated."); |
| } else { |
| cmn_err(CE_WARN, |
| "XFS: unknown mount option [%s].", this_char); |
| return EINVAL; |
| } |
| } |
| |
| if (args->flags & XFSMNT_NORECOVERY) { |
| if ((mp->m_flags & XFS_MOUNT_RDONLY) == 0) { |
| cmn_err(CE_WARN, |
| "XFS: no-recovery mounts must be read-only."); |
| return EINVAL; |
| } |
| } |
| |
| if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) { |
| cmn_err(CE_WARN, |
| "XFS: sunit and swidth options incompatible with the noalign option"); |
| return EINVAL; |
| } |
| |
| if ((args->flags & XFSMNT_GQUOTA) && (args->flags & XFSMNT_PQUOTA)) { |
| cmn_err(CE_WARN, |
| "XFS: cannot mount with both project and group quota"); |
| return EINVAL; |
| } |
| |
| if ((args->flags & XFSMNT_DMAPI) && *args->mtpt == '\0') { |
| printk("XFS: %s option needs the mount point option as well\n", |
| MNTOPT_DMAPI); |
| return EINVAL; |
| } |
| |
| if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
| cmn_err(CE_WARN, |
| "XFS: sunit and swidth must be specified together"); |
| return EINVAL; |
| } |
| |
| if (dsunit && (dswidth % dsunit != 0)) { |
| cmn_err(CE_WARN, |
| "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)", |
| dswidth, dsunit); |
| return EINVAL; |
| } |
| |
| /* |
| * Applications using DMI filesystems often expect the |
| * inode generation number to be monotonically increasing. |
| * If we delete inode chunks we break this assumption, so |
| * keep unused inode chunks on disk for DMI filesystems |
| * until we come up with a better solution. |
| * Note that if "ikeep" or "noikeep" mount options are |
| * supplied, then they are honored. |
| */ |
| if ((args->flags & XFSMNT_DMAPI) && dmapi_implies_ikeep) |
| args->flags |= XFSMNT_IKEEP; |
| |
| if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { |
| if (dsunit) { |
| args->sunit = dsunit; |
| args->flags |= XFSMNT_RETERR; |
| } else { |
| args->sunit = vol_dsunit; |
| } |
| dswidth ? (args->swidth = dswidth) : |
| (args->swidth = vol_dswidth); |
| } else { |
| args->sunit = args->swidth = 0; |
| } |
| |
| done: |
| if (args->flags & XFSMNT_32BITINODES) |
| mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
| if (args->flags2) |
| args->flags |= XFSMNT_FLAGS2; |
| return 0; |
| } |
| |
| struct proc_xfs_info { |
| int flag; |
| char *str; |
| }; |
| |
| STATIC int |
| xfs_showargs( |
| struct xfs_mount *mp, |
| struct seq_file *m) |
| { |
| static struct proc_xfs_info xfs_info_set[] = { |
| /* the few simple ones we can get from the mount struct */ |
| { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
| { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
| { XFS_MOUNT_INO64, "," MNTOPT_INO64 }, |
| { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
| { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, |
| { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, |
| { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, |
| { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, |
| { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
| { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, |
| { XFS_MOUNT_DMAPI, "," MNTOPT_DMAPI }, |
| { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
| { 0, NULL } |
| }; |
| static struct proc_xfs_info xfs_info_unset[] = { |
| /* the few simple ones we can get from the mount struct */ |
| { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
| { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, |
| { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, |
| { 0, NULL } |
| }; |
| struct proc_xfs_info *xfs_infop; |
| |
| for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { |
| if (mp->m_flags & xfs_infop->flag) |
| seq_puts(m, xfs_infop->str); |
| } |
| for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { |
| if (!(mp->m_flags & xfs_infop->flag)) |
| seq_puts(m, xfs_infop->str); |
| } |
| |
| if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) |
| seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", |
| (int)(1 << mp->m_writeio_log) >> 10); |
| |
| if (mp->m_logbufs > 0) |
| seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); |
| if (mp->m_logbsize > 0) |
| seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); |
| |
| if (mp->m_logname) |
| seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); |
| if (mp->m_rtname) |
| seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); |
| |
| if (mp->m_dalign > 0) |
| seq_printf(m, "," MNTOPT_SUNIT "=%d", |
| (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); |
| if (mp->m_swidth > 0) |
| seq_printf(m, "," MNTOPT_SWIDTH "=%d", |
| (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); |
| |
| if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) |
| seq_puts(m, "," MNTOPT_USRQUOTA); |
| else if (mp->m_qflags & XFS_UQUOTA_ACCT) |
| seq_puts(m, "," MNTOPT_UQUOTANOENF); |
| |
| if (mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) |
| seq_puts(m, "," MNTOPT_PRJQUOTA); |
| else if (mp->m_qflags & XFS_PQUOTA_ACCT) |
| seq_puts(m, "," MNTOPT_PQUOTANOENF); |
| |
| if (mp->m_qflags & (XFS_GQUOTA_ACCT|XFS_OQUOTA_ENFD)) |
| seq_puts(m, "," MNTOPT_GRPQUOTA); |
| else if (mp->m_qflags & XFS_GQUOTA_ACCT) |
| seq_puts(m, "," MNTOPT_GQUOTANOENF); |
| |
| if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) |
| seq_puts(m, "," MNTOPT_NOQUOTA); |
| |
| return 0; |
| } |
| __uint64_t |
| xfs_max_file_offset( |
| unsigned int blockshift) |
| { |
| unsigned int pagefactor = 1; |
| unsigned int bitshift = BITS_PER_LONG - 1; |
| |
| /* Figure out maximum filesize, on Linux this can depend on |
| * the filesystem blocksize (on 32 bit platforms). |
| * __block_prepare_write does this in an [unsigned] long... |
| * page->index << (PAGE_CACHE_SHIFT - bbits) |
| * So, for page sized blocks (4K on 32 bit platforms), |
| * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is |
| * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) |
| * but for smaller blocksizes it is less (bbits = log2 bsize). |
| * Note1: get_block_t takes a long (implicit cast from above) |
| * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch |
| * can optionally convert the [unsigned] long from above into |
| * an [unsigned] long long. |
| */ |
| |
| #if BITS_PER_LONG == 32 |
| # if defined(CONFIG_LBD) |
| ASSERT(sizeof(sector_t) == 8); |
| pagefactor = PAGE_CACHE_SIZE; |
| bitshift = BITS_PER_LONG; |
| # else |
| pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); |
| # endif |
| #endif |
| |
| return (((__uint64_t)pagefactor) << bitshift) - 1; |
| } |
| |
| STATIC_INLINE void |
| xfs_set_inodeops( |
| struct inode *inode) |
| { |
| switch (inode->i_mode & S_IFMT) { |
| case S_IFREG: |
| inode->i_op = &xfs_inode_operations; |
| inode->i_fop = &xfs_file_operations; |
| inode->i_mapping->a_ops = &xfs_address_space_operations; |
| break; |
| case S_IFDIR: |
| inode->i_op = &xfs_dir_inode_operations; |
| inode->i_fop = &xfs_dir_file_operations; |
| break; |
| case S_IFLNK: |
| inode->i_op = &xfs_symlink_inode_operations; |
| if (!(XFS_I(inode)->i_df.if_flags & XFS_IFINLINE)) |
| inode->i_mapping->a_ops = &xfs_address_space_operations; |
| break; |
| default: |
| inode->i_op = &xfs_inode_operations; |
| init_special_inode(inode, inode->i_mode, inode->i_rdev); |
| break; |
| } |
| } |
| |
| STATIC_INLINE void |
| xfs_revalidate_inode( |
| xfs_mount_t *mp, |
| bhv_vnode_t *vp, |
| xfs_inode_t *ip) |
| { |
| struct inode *inode = vn_to_inode(vp); |
| |
| inode->i_mode = ip->i_d.di_mode; |
| inode->i_nlink = ip->i_d.di_nlink; |
| inode->i_uid = ip->i_d.di_uid; |
| inode->i_gid = ip->i_d.di_gid; |
| |
| switch (inode->i_mode & S_IFMT) { |
| case S_IFBLK: |
| case S_IFCHR: |
| inode->i_rdev = |
| MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, |
| sysv_minor(ip->i_df.if_u2.if_rdev)); |
| break; |
| default: |
| inode->i_rdev = 0; |
| break; |
| } |
| |
| inode->i_generation = ip->i_d.di_gen; |
| i_size_write(inode, ip->i_d.di_size); |
| inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; |
| inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; |
| inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; |
| inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; |
| inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; |
| inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; |
| if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) |
| inode->i_flags |= S_IMMUTABLE; |
| else |
| inode->i_flags &= ~S_IMMUTABLE; |
| if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) |
| inode->i_flags |= S_APPEND; |
| else |
| inode->i_flags &= ~S_APPEND; |
| if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) |
| inode->i_flags |= S_SYNC; |
| else |
| inode->i_flags &= ~S_SYNC; |
| if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) |
| inode->i_flags |= S_NOATIME; |
| else |
| inode->i_flags &= ~S_NOATIME; |
| xfs_iflags_clear(ip, XFS_IMODIFIED); |
| } |
| |
| void |
| xfs_initialize_vnode( |
| struct xfs_mount *mp, |
| bhv_vnode_t *vp, |
| struct xfs_inode *ip) |
| { |
| struct inode *inode = vn_to_inode(vp); |
| |
| if (!ip->i_vnode) { |
| ip->i_vnode = vp; |
| inode->i_private = ip; |
| } |
| |
| /* |
| * We need to set the ops vectors, and unlock the inode, but if |
| * we have been called during the new inode create process, it is |
| * too early to fill in the Linux inode. We will get called a |
| * second time once the inode is properly set up, and then we can |
| * finish our work. |
| */ |
| if (ip->i_d.di_mode != 0 && (inode->i_state & I_NEW)) { |
| xfs_revalidate_inode(mp, vp, ip); |
| xfs_set_inodeops(inode); |
| |
| xfs_iflags_clear(ip, XFS_INEW); |
| barrier(); |
| |
| unlock_new_inode(inode); |
| } |
| } |
| |
| int |
| xfs_blkdev_get( |
| xfs_mount_t *mp, |
| const char *name, |
| struct block_device **bdevp) |
| { |
| int error = 0; |
| |
| *bdevp = open_bdev_excl(name, 0, mp); |
| if (IS_ERR(*bdevp)) { |
| error = PTR_ERR(*bdevp); |
| printk("XFS: Invalid device [%s], error=%d\n", name, error); |
| } |
| |
| return -error; |
| } |
| |
| void |
| xfs_blkdev_put( |
| struct block_device *bdev) |
| { |
| if (bdev) |
| close_bdev_excl(bdev); |
| } |
| |
| /* |
| * Try to write out the superblock using barriers. |
| */ |
| STATIC int |
| xfs_barrier_test( |
| xfs_mount_t *mp) |
| { |
| xfs_buf_t *sbp = xfs_getsb(mp, 0); |
| int error; |
| |
| XFS_BUF_UNDONE(sbp); |
| XFS_BUF_UNREAD(sbp); |
| XFS_BUF_UNDELAYWRITE(sbp); |
| XFS_BUF_WRITE(sbp); |
| XFS_BUF_UNASYNC(sbp); |
| XFS_BUF_ORDERED(sbp); |
| |
| xfsbdstrat(mp, sbp); |
| error = xfs_iowait(sbp); |
| |
| /* |
| * Clear all the flags we set and possible error state in the |
| * buffer. We only did the write to try out whether barriers |
| * worked and shouldn't leave any traces in the superblock |
| * buffer. |
| */ |
| XFS_BUF_DONE(sbp); |
| XFS_BUF_ERROR(sbp, 0); |
| XFS_BUF_UNORDERED(sbp); |
| |
| xfs_buf_relse(sbp); |
| return error; |
| } |
| |
| void |
| xfs_mountfs_check_barriers(xfs_mount_t *mp) |
| { |
| int error; |
| |
| if (mp->m_logdev_targp != mp->m_ddev_targp) { |
| xfs_fs_cmn_err(CE_NOTE, mp, |
| "Disabling barriers, not supported with external log device"); |
| mp->m_flags &= ~XFS_MOUNT_BARRIER; |
| return; |
| } |
| |
| if (mp->m_ddev_targp->bt_bdev->bd_disk->queue->ordered == |
| QUEUE_ORDERED_NONE) { |
| xfs_fs_cmn_err(CE_NOTE, mp, |
| "Disabling barriers, not supported by the underlying device"); |
| mp->m_flags &= ~XFS_MOUNT_BARRIER; |
| return; |
| } |
| |
| if (xfs_readonly_buftarg(mp->m_ddev_targp)) { |
| xfs_fs_cmn_err(CE_NOTE, mp, |
| "Disabling barriers, underlying device is readonly"); |
| mp->m_flags &= ~XFS_MOUNT_BARRIER; |
| return; |
| } |
| |
| error = xfs_barrier_test(mp); |
| if (error) { |
| xfs_fs_cmn_err(CE_NOTE, mp, |
| "Disabling barriers, trial barrier write failed"); |
| mp->m_flags &= ~XFS_MOUNT_BARRIER; |
| return; |
| } |
| } |
| |
| void |
| xfs_blkdev_issue_flush( |
| xfs_buftarg_t *buftarg) |
| { |
| blkdev_issue_flush(buftarg->bt_bdev, NULL); |
| } |
| |
| STATIC void |
| xfs_close_devices( |
| struct xfs_mount *mp) |
| { |
| if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { |
| xfs_free_buftarg(mp->m_logdev_targp); |
| xfs_blkdev_put(mp->m_logdev_targp->bt_bdev); |
| } |
| if (mp->m_rtdev_targp) { |
| xfs_free_buftarg(mp->m_rtdev_targp); |
| xfs_blkdev_put(mp->m_rtdev_targp->bt_bdev); |
| } |
| xfs_free_buftarg(mp->m_ddev_targp); |
| } |
| |
| /* |
| * The file system configurations are: |
| * (1) device (partition) with data and internal log |
| * (2) logical volume with data and log subvolumes. |
| * (3) logical volume with data, log, and realtime subvolumes. |
| * |
| * We only have to handle opening the log and realtime volumes here if |
| * they are present. The data subvolume has already been opened by |
| * get_sb_bdev() and is stored in sb->s_bdev. |
| */ |
| STATIC int |
| xfs_open_devices( |
| struct xfs_mount *mp, |
| struct xfs_mount_args *args) |
| { |
| struct block_device *ddev = mp->m_super->s_bdev; |
| struct block_device *logdev = NULL, *rtdev = NULL; |
| int error; |
| |
| /* |
| * Open real time and log devices - order is important. |
| */ |
| if (args->logname[0]) { |
| error = xfs_blkdev_get(mp, args->logname, &logdev); |
| if (error) |
| goto out; |
| } |
| |
| if (args->rtname[0]) { |
| error = xfs_blkdev_get(mp, args->rtname, &rtdev); |
| if (error) |
| goto out_close_logdev; |
| |
| if (rtdev == ddev || rtdev == logdev) { |
| cmn_err(CE_WARN, |
| "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev."); |
| error = EINVAL; |
| goto out_close_rtdev; |
| } |
| } |
| |
| /* |
| * Setup xfs_mount buffer target pointers |
| */ |
| error = ENOMEM; |
| mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0); |
| if (!mp->m_ddev_targp) |
| goto out_close_rtdev; |
| |
| if (rtdev) { |
| mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1); |
| if (!mp->m_rtdev_targp) |
| goto out_free_ddev_targ; |
| } |
| |
| if (logdev && logdev != ddev) { |
| mp->m_logdev_targp = xfs_alloc_buftarg(logdev, 1); |
| if (!mp->m_logdev_targp) |
| goto out_free_rtdev_targ; |
| } else { |
| mp->m_logdev_targp = mp->m_ddev_targp; |
| } |
| |
| return 0; |
| |
| out_free_rtdev_targ: |
| if (mp->m_rtdev_targp) |
| xfs_free_buftarg(mp->m_rtdev_targp); |
| out_free_ddev_targ: |
| xfs_free_buftarg(mp->m_ddev_targp); |
| out_close_rtdev: |
| if (rtdev) |
| xfs_blkdev_put(rtdev); |
| out_close_logdev: |
| if (logdev && logdev != ddev) |
| xfs_blkdev_put(logdev); |
| out: |
| return error; |
| } |
| |
| /* |
| * Setup xfs_mount buffer target pointers based on superblock |
| */ |
| STATIC int |
| xfs_setup_devices( |
| struct xfs_mount *mp) |
| { |
| int error; |
| |
| error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
| mp->m_sb.sb_sectsize); |
| if (error) |
| return error; |
| |
| if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { |
| unsigned int log_sector_size = BBSIZE; |
| |
| if (xfs_sb_version_hassector(&mp->m_sb)) |
| log_sector_size = mp->m_sb.sb_logsectsize; |
| error = xfs_setsize_buftarg(mp->m_logdev_targp, |
| mp->m_sb.sb_blocksize, |
| log_sector_size); |
| if (error) |
| return error; |
| } |
| if (mp->m_rtdev_targp) { |
| error = xfs_setsize_buftarg(mp->m_rtdev_targp, |
| mp->m_sb.sb_blocksize, |
| mp->m_sb.sb_sectsize); |
| if (error) |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * XFS AIL push thread support |
| */ |
| void |
| xfsaild_wakeup( |
| xfs_mount_t *mp, |
| xfs_lsn_t threshold_lsn) |
| { |
| mp->m_ail.xa_target = threshold_lsn; |
| wake_up_process(mp->m_ail.xa_task); |
| } |
| |
| int |
| xfsaild( |
| void *data) |
| { |
| xfs_mount_t *mp = (xfs_mount_t *)data; |
| xfs_lsn_t last_pushed_lsn = 0; |
| long tout = 0; |
| |
| while (!kthread_should_stop()) { |
| if (tout) |
| schedule_timeout_interruptible(msecs_to_jiffies(tout)); |
| tout = 1000; |
| |
| /* swsusp */ |
| try_to_freeze(); |
| |
| ASSERT(mp->m_log); |
| if (XFS_FORCED_SHUTDOWN(mp)) |
| continue; |
| |
| tout = xfsaild_push(mp, &last_pushed_lsn); |
| } |
| |
| return 0; |
| } /* xfsaild */ |
| |
| int |
| xfsaild_start( |
| xfs_mount_t *mp) |
| { |
| mp->m_ail.xa_target = 0; |
| mp->m_ail.xa_task = kthread_run(xfsaild, mp, "xfsaild"); |
| if (IS_ERR(mp->m_ail.xa_task)) |
| return -PTR_ERR(mp->m_ail.xa_task); |
| return 0; |
| } |
| |
| void |
| xfsaild_stop( |
| xfs_mount_t *mp) |
| { |
| kthread_stop(mp->m_ail.xa_task); |
| } |
| |
| |
| |
| STATIC struct inode * |
| xfs_fs_alloc_inode( |
| struct super_block *sb) |
| { |
| bhv_vnode_t *vp; |
| |
| vp = kmem_zone_alloc(xfs_vnode_zone, KM_SLEEP); |
| if (unlikely(!vp)) |
| return NULL; |
| return vn_to_inode(vp); |
| } |
| |
| STATIC void |
| xfs_fs_destroy_inode( |
| struct inode *inode) |
| { |
| kmem_zone_free(xfs_vnode_zone, vn_from_inode(inode)); |
| } |
| |
| STATIC void |
| xfs_fs_inode_init_once( |
| void *vnode) |
| { |
| inode_init_once(vn_to_inode((bhv_vnode_t *)vnode)); |
| } |
| |
| STATIC int __init |
| xfs_init_zones(void) |
| { |
| xfs_vnode_zone = kmem_zone_init_flags(sizeof(bhv_vnode_t), "xfs_vnode", |
| KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | |
| KM_ZONE_SPREAD, |
| xfs_fs_inode_init_once); |
| if (!xfs_vnode_zone) |
| goto out; |
| |
| xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); |
| if (!xfs_ioend_zone) |
| goto out_destroy_vnode_zone; |
| |
| xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, |
| xfs_ioend_zone); |
| if (!xfs_ioend_pool) |
| goto out_free_ioend_zone; |
| return 0; |
| |
| out_free_ioend_zone: |
| kmem_zone_destroy(xfs_ioend_zone); |
| out_destroy_vnode_zone: |
| kmem_zone_destroy(xfs_vnode_zone); |
| out: |
| return -ENOMEM; |
| } |
| |
| STATIC void |
| xfs_destroy_zones(void) |
| { |
| mempool_destroy(xfs_ioend_pool); |
| kmem_zone_destroy(xfs_vnode_zone); |
| kmem_zone_destroy(xfs_ioend_zone); |
| } |
| |
| /* |
| * Attempt to flush the inode, this will actually fail |
| * if the inode is pinned, but we dirty the inode again |
| * at the point when it is unpinned after a log write, |
| * since this is when the inode itself becomes flushable. |
| */ |
| STATIC int |
| xfs_fs_write_inode( |
| struct inode *inode, |
| int sync) |
| { |
| int error = 0; |
| int flags = 0; |
| |
| xfs_itrace_entry(XFS_I(inode)); |
| if (sync) { |
| filemap_fdatawait(inode->i_mapping); |
| flags |= FLUSH_SYNC; |
| } |
| error = xfs_inode_flush(XFS_I(inode), flags); |
| /* |
| * if we failed to write out the inode then mark |
| * it dirty again so we'll try again later. |
| */ |
| if (error) |
| mark_inode_dirty_sync(inode); |
| |
| return -error; |
| } |
| |
| STATIC void |
| xfs_fs_clear_inode( |
| struct inode *inode) |
| { |
| xfs_inode_t *ip = XFS_I(inode); |
| |
| /* |
| * ip can be null when xfs_iget_core calls xfs_idestroy if we |
| * find an inode with di_mode == 0 but without IGET_CREATE set. |
| */ |
| if (ip) { |
| xfs_itrace_entry(ip); |
| XFS_STATS_INC(vn_rele); |
| XFS_STATS_INC(vn_remove); |
| XFS_STATS_INC(vn_reclaim); |
| XFS_STATS_DEC(vn_active); |
| |
| xfs_inactive(ip); |
| xfs_iflags_clear(ip, XFS_IMODIFIED); |
| if (xfs_reclaim(ip)) |
| panic("%s: cannot reclaim 0x%p\n", __func__, inode); |
| } |
| |
| ASSERT(XFS_I(inode) == NULL); |
| } |
| |
| /* |
| * Enqueue a work item to be picked up by the vfs xfssyncd thread. |
| * Doing this has two advantages: |
| * - It saves on stack space, which is tight in certain situations |
| * - It can be used (with care) as a mechanism to avoid deadlocks. |
| * Flushing while allocating in a full filesystem requires both. |
| */ |
| STATIC void |
| xfs_syncd_queue_work( |
| struct xfs_mount *mp, |
| void *data, |
| void (*syncer)(struct xfs_mount *, void *)) |
| { |
| struct bhv_vfs_sync_work *work; |
| |
| work = kmem_alloc(sizeof(struct bhv_vfs_sync_work), KM_SLEEP); |
| INIT_LIST_HEAD(&work->w_list); |
| work->w_syncer = syncer; |
| work->w_data = data; |
| work->w_mount = mp; |
| spin_lock(&mp->m_sync_lock); |
| list_add_tail(&work->w_list, &mp->m_sync_list); |
| spin_unlock(&mp->m_sync_lock); |
| wake_up_process(mp->m_sync_task); |
| } |
| |
| /* |
| * Flush delayed allocate data, attempting to free up reserved space |
| * from existing allocations. At this point a new allocation attempt |
| * has failed with ENOSPC and we are in the process of scratching our |
| * heads, looking about for more room... |
| */ |
| STATIC void |
| xfs_flush_inode_work( |
| struct xfs_mount *mp, |
| void *arg) |
| { |
| struct inode *inode = arg; |
| filemap_flush(inode->i_mapping); |
| iput(inode); |
| } |
| |
| void |
| xfs_flush_inode( |
| xfs_inode_t *ip) |
| { |
| struct inode *inode = ip->i_vnode; |
| |
| igrab(inode); |
| xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_inode_work); |
| delay(msecs_to_jiffies(500)); |
| } |
| |
| /* |
| * This is the "bigger hammer" version of xfs_flush_inode_work... |
| * (IOW, "If at first you don't succeed, use a Bigger Hammer"). |
| */ |
| STATIC void |
| xfs_flush_device_work( |
| struct xfs_mount *mp, |
| void *arg) |
| { |
| struct inode *inode = arg; |
| sync_blockdev(mp->m_super->s_bdev); |
| iput(inode); |
| } |
| |
| void |
| xfs_flush_device( |
| xfs_inode_t *ip) |
| { |
| struct inode *inode = vn_to_inode(XFS_ITOV(ip)); |
| |
| igrab(inode); |
| xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_device_work); |
| delay(msecs_to_jiffies(500)); |
| xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC); |
| } |
| |
| STATIC void |
| xfs_sync_worker( |
| struct xfs_mount *mp, |
| void *unused) |
| { |
| int error; |
| |
| if (!(mp->m_flags & XFS_MOUNT_RDONLY)) |
| error = xfs_sync(mp, SYNC_FSDATA | SYNC_BDFLUSH | SYNC_ATTR); |
| mp->m_sync_seq++; |
| wake_up(&mp->m_wait_single_sync_task); |
| } |
| |
| STATIC int |
| xfssyncd( |
| void *arg) |
| { |
| struct xfs_mount *mp = arg; |
| long timeleft; |
| bhv_vfs_sync_work_t *work, *n; |
| LIST_HEAD (tmp); |
| |
| set_freezable(); |
| timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10); |
| for (;;) { |
| timeleft = schedule_timeout_interruptible(timeleft); |
| /* swsusp */ |
| try_to_freeze(); |
| if (kthread_should_stop() && list_empty(&mp->m_sync_list)) |
| break; |
| |
| spin_lock(&mp->m_sync_lock); |
| /* |
| * We can get woken by laptop mode, to do a sync - |
| * that's the (only!) case where the list would be |
| * empty with time remaining. |
| */ |
| if (!timeleft || list_empty(&mp->m_sync_list)) { |
| if (!timeleft) |
| timeleft = xfs_syncd_centisecs * |
| msecs_to_jiffies(10); |
| INIT_LIST_HEAD(&mp->m_sync_work.w_list); |
| list_add_tail(&mp->m_sync_work.w_list, |
| &mp->m_sync_list); |
| } |
| list_for_each_entry_safe(work, n, &mp->m_sync_list, w_list) |
| list_move(&work->w_list, &tmp); |
| spin_unlock(&mp->m_sync_lock); |
| |
| list_for_each_entry_safe(work, n, &tmp, w_list) { |
| (*work->w_syncer)(mp, work->w_data); |
| list_del(&work->w_list); |
| if (work == &mp->m_sync_work) |
| continue; |
| kmem_free(work); |
| } |
| } |
| |
| return 0; |
| } |
| |
| STATIC void |
| xfs_fs_put_super( |
| struct super_block *sb) |
| { |
| struct xfs_mount *mp = XFS_M(sb); |
| struct xfs_inode *rip = mp->m_rootip; |
| int unmount_event_flags = 0; |
| int error; |
| |
| kthread_stop(mp->m_sync_task); |
| |
| xfs_sync(mp, SYNC_ATTR | SYNC_DELWRI); |
| |
| #ifdef HAVE_DMAPI |
| if (mp->m_flags & XFS_MOUNT_DMAPI) { |
| unmount_event_flags = |
| (mp->m_dmevmask & (1 << DM_EVENT_UNMOUNT)) ? |
| 0 : DM_FLAGS_UNWANTED; |
| /* |
| * Ignore error from dmapi here, first unmount is not allowed |
| * to fail anyway, and second we wouldn't want to fail a |
| * unmount because of dmapi. |
| */ |
| XFS_SEND_PREUNMOUNT(mp, rip, DM_RIGHT_NULL, rip, DM_RIGHT_NULL, |
| NULL, NULL, 0, 0, unmount_event_flags); |
| } |
| #endif |
| |
| /* |
| * Blow away any referenced inode in the filestreams cache. |
| * This can and will cause log traffic as inodes go inactive |
| * here. |
| */ |
| xfs_filestream_unmount(mp); |
| |
| XFS_bflush(mp->m_ddev_targp); |
| error = xfs_unmount_flush(mp, 0); |
| WARN_ON(error); |
| |
| IRELE(rip); |
| |
| /* |
| * If we're forcing a shutdown, typically because of a media error, |
| * we want to make sure we invalidate dirty pages that belong to |
| * referenced vnodes as well. |
| */ |
| if (XFS_FORCED_SHUTDOWN(mp)) { |
| error = xfs_sync(mp, SYNC_WAIT | SYNC_CLOSE); |
| ASSERT(error != EFSCORRUPTED); |
| } |
| |
| if (mp->m_flags & XFS_MOUNT_DMAPI) { |
| XFS_SEND_UNMOUNT(mp, rip, DM_RIGHT_NULL, 0, 0, |
| unmount_event_flags); |
| } |
| |
| xfs_unmountfs(mp); |
| xfs_icsb_destroy_counters(mp); |
| xfs_close_devices(mp); |
| xfs_qmops_put(mp); |
| xfs_dmops_put(mp); |
| kfree(mp); |
| } |
| |
| STATIC void |
| xfs_fs_write_super( |
| struct super_block *sb) |
| { |
| if (!(sb->s_flags & MS_RDONLY)) |
| xfs_sync(XFS_M(sb), SYNC_FSDATA); |
| sb->s_dirt = 0; |
| } |
| |
| STATIC int |
| xfs_fs_sync_super( |
| struct super_block *sb, |
| int wait) |
| { |
| struct xfs_mount *mp = XFS_M(sb); |
| int error; |
| int flags; |
| |
| /* |
| * Treat a sync operation like a freeze. This is to work |
| * around a race in sync_inodes() which works in two phases |
| * - an asynchronous flush, which can write out an inode |
| * without waiting for file size updates to complete, and a |
| * synchronous flush, which wont do anything because the |
| * async flush removed the inode's dirty flag. Also |
| * sync_inodes() will not see any files that just have |
| * outstanding transactions to be flushed because we don't |
| * dirty the Linux inode until after the transaction I/O |
| * completes. |
| */ |
| if (wait || unlikely(sb->s_frozen == SB_FREEZE_WRITE)) { |
| /* |
| * First stage of freeze - no more writers will make progress |
| * now we are here, so we flush delwri and delalloc buffers |
| * here, then wait for all I/O to complete. Data is frozen at |
| * that point. Metadata is not frozen, transactions can still |
| * occur here so don't bother flushing the buftarg (i.e |
| * SYNC_QUIESCE) because it'll just get dirty again. |
| */ |
| flags = SYNC_DATA_QUIESCE; |
| } else |
| flags = SYNC_FSDATA; |
| |
| error = xfs_sync(mp, flags); |
| sb->s_dirt = 0; |
| |
| if (unlikely(laptop_mode)) { |
| int prev_sync_seq = mp->m_sync_seq; |
| |
| /* |
| * The disk must be active because we're syncing. |
| * We schedule xfssyncd now (now that the disk is |
| * active) instead of later (when it might not be). |
| */ |
| wake_up_process(mp->m_sync_task); |
| /* |
| * We have to wait for the sync iteration to complete. |
| * If we don't, the disk activity caused by the sync |
| * will come after the sync is completed, and that |
| * triggers another sync from laptop mode. |
| */ |
| wait_event(mp->m_wait_single_sync_task, |
| mp->m_sync_seq != prev_sync_seq); |
| } |
| |
| return -error; |
| } |
| |
| STATIC int |
| xfs_fs_statfs( |
| struct dentry *dentry, |
| struct kstatfs *statp) |
| { |
| struct xfs_mount *mp = XFS_M(dentry->d_sb); |
| xfs_sb_t *sbp = &mp->m_sb; |
| __uint64_t fakeinos, id; |
| xfs_extlen_t lsize; |
| |
| statp->f_type = XFS_SB_MAGIC; |
| statp->f_namelen = MAXNAMELEN - 1; |
| |
| id = huge_encode_dev(mp->m_ddev_targp->bt_dev); |
| statp->f_fsid.val[0] = (u32)id; |
| statp->f_fsid.val[1] = (u32)(id >> 32); |
| |
| xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
| |
| spin_lock(&mp->m_sb_lock); |
| statp->f_bsize = sbp->sb_blocksize; |
| lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; |
| statp->f_blocks = sbp->sb_dblocks - lsize; |
| statp->f_bfree = statp->f_bavail = |
| sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); |
| fakeinos = statp->f_bfree << sbp->sb_inopblog; |
| #if XFS_BIG_INUMS |
| fakeinos += mp->m_inoadd; |
| #endif |
| statp->f_files = |
| MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); |
| if (mp->m_maxicount) |
| #if XFS_BIG_INUMS |
| if (!mp->m_inoadd) |
| #endif |
| statp->f_files = min_t(typeof(statp->f_files), |
| statp->f_files, |
| mp->m_maxicount); |
| statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); |
| spin_unlock(&mp->m_sb_lock); |
| |
| XFS_QM_DQSTATVFS(XFS_I(dentry->d_inode), statp); |
| return 0; |
| } |
| |
| STATIC int |
| xfs_fs_remount( |
| struct super_block *sb, |
| int *flags, |
| char *options) |
| { |
| struct xfs_mount *mp = XFS_M(sb); |
| struct xfs_mount_args *args; |
| int error; |
| |
| args = xfs_args_allocate(sb, 0); |
| if (!args) |
| return -ENOMEM; |
| |
| error = xfs_parseargs(mp, options, args, 1); |
| if (error) |
| goto out_free_args; |
| |
| if (!(*flags & MS_RDONLY)) { /* rw/ro -> rw */ |
| if (mp->m_flags & XFS_MOUNT_RDONLY) |
| mp->m_flags &= ~XFS_MOUNT_RDONLY; |
| if (args->flags & XFSMNT_BARRIER) { |
| mp->m_flags |= XFS_MOUNT_BARRIER; |
| xfs_mountfs_check_barriers(mp); |
| } else { |
| mp->m_flags &= ~XFS_MOUNT_BARRIER; |
| } |
| } else if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { /* rw -> ro */ |
| xfs_filestream_flush(mp); |
| xfs_sync(mp, SYNC_DATA_QUIESCE); |
| xfs_attr_quiesce(mp); |
| mp->m_flags |= XFS_MOUNT_RDONLY; |
| } |
| |
| out_free_args: |
| kfree(args); |
| return -error; |
| } |
| |
| /* |
| * Second stage of a freeze. The data is already frozen so we only |
| * need to take care of themetadata. Once that's done write a dummy |
| * record to dirty the log in case of a crash while frozen. |
| */ |
| STATIC void |
| xfs_fs_lockfs( |
| struct super_block *sb) |
| { |
| struct xfs_mount *mp = XFS_M(sb); |
| |
| xfs_attr_quiesce(mp); |
| xfs_fs_log_dummy(mp); |
| } |
| |
| STATIC int |
| xfs_fs_show_options( |
| struct seq_file *m, |
| struct vfsmount *mnt) |
| { |
| return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
| } |
| |
| STATIC int |
| xfs_fs_quotasync( |
| struct super_block *sb, |
| int type) |
| { |
| return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XQUOTASYNC, 0, NULL); |
| } |
| |
| STATIC int |
| xfs_fs_getxstate( |
| struct super_block *sb, |
| struct fs_quota_stat *fqs) |
| { |
| return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XGETQSTAT, 0, (caddr_t)fqs); |
| } |
| |
| STATIC int |
| xfs_fs_setxstate( |
| struct super_block *sb, |
| unsigned int flags, |
| int op) |
| { |
| return -XFS_QM_QUOTACTL(XFS_M(sb), op, 0, (caddr_t)&flags); |
| } |
| |
| STATIC int |
| xfs_fs_getxquota( |
| struct super_block *sb, |
| int type, |
| qid_t id, |
| struct fs_disk_quota *fdq) |
| { |
| return -XFS_QM_QUOTACTL(XFS_M(sb), |
| (type == USRQUOTA) ? Q_XGETQUOTA : |
| ((type == GRPQUOTA) ? Q_XGETGQUOTA : |
| Q_XGETPQUOTA), id, (caddr_t)fdq); |
| } |
| |
| STATIC int |
| xfs_fs_setxquota( |
| struct super_block *sb, |
| int type, |
| qid_t id, |
| struct fs_disk_quota *fdq) |
| { |
| return -XFS_QM_QUOTACTL(XFS_M(sb), |
| (type == USRQUOTA) ? Q_XSETQLIM : |
| ((type == GRPQUOTA) ? Q_XSETGQLIM : |
| Q_XSETPQLIM), id, (caddr_t)fdq); |
| } |
| |
| /* |
| * This function fills in xfs_mount_t fields based on mount args. |
| * Note: the superblock has _not_ yet been read in. |
| */ |
| STATIC int |
| xfs_start_flags( |
| struct xfs_mount_args *ap, |
| struct xfs_mount *mp) |
| { |
| /* Values are in BBs */ |
| if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { |
| /* |
| * At this point the superblock has not been read |
| * in, therefore we do not know the block size. |
| * Before the mount call ends we will convert |
| * these to FSBs. |
| */ |
| mp->m_dalign = ap->sunit; |
| mp->m_swidth = ap->swidth; |
| } |
| |
| if (ap->logbufs != -1 && |
| ap->logbufs != 0 && |
| (ap->logbufs < XLOG_MIN_ICLOGS || |
| ap->logbufs > XLOG_MAX_ICLOGS)) { |
| cmn_err(CE_WARN, |
| "XFS: invalid logbufs value: %d [not %d-%d]", |
| ap->logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
| return XFS_ERROR(EINVAL); |
| } |
| mp->m_logbufs = ap->logbufs; |
| if (ap->logbufsize != -1 && |
| ap->logbufsize != 0 && |
| (ap->logbufsize < XLOG_MIN_RECORD_BSIZE || |
| ap->logbufsize > XLOG_MAX_RECORD_BSIZE || |
| !is_power_of_2(ap->logbufsize))) { |
| cmn_err(CE_WARN, |
| "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", |
| ap->logbufsize); |
| return XFS_ERROR(EINVAL); |
| } |
| mp->m_logbsize = ap->logbufsize; |
| mp->m_fsname_len = strlen(ap->fsname) + 1; |
| mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP); |
| strcpy(mp->m_fsname, ap->fsname); |
| if (ap->rtname[0]) { |
| mp->m_rtname = kmem_alloc(strlen(ap->rtname) + 1, KM_SLEEP); |
| strcpy(mp->m_rtname, ap->rtname); |
| } |
| if (ap->logname[0]) { |
| mp->m_logname = kmem_alloc(strlen(ap->logname) + 1, KM_SLEEP); |
| strcpy(mp->m_logname, ap->logname); |
| } |
| |
| if (ap->flags & XFSMNT_WSYNC) |
| mp->m_flags |= XFS_MOUNT_WSYNC; |
| #if XFS_BIG_INUMS |
| if (ap->flags & XFSMNT_INO64) { |
| mp->m_flags |= XFS_MOUNT_INO64; |
| mp->m_inoadd = XFS_INO64_OFFSET; |
| } |
| #endif |
| if (ap->flags & XFSMNT_RETERR) |
| mp->m_flags |= XFS_MOUNT_RETERR; |
| if (ap->flags & XFSMNT_NOALIGN) |
| mp->m_flags |= XFS_MOUNT_NOALIGN; |
| if (ap->flags & XFSMNT_SWALLOC) |
| mp->m_flags |= XFS_MOUNT_SWALLOC; |
| if (ap->flags & XFSMNT_OSYNCISOSYNC) |
| mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC; |
| if (ap->flags & XFSMNT_32BITINODES) |
| mp->m_flags |= XFS_MOUNT_32BITINODES; |
| |
| if (ap->flags & XFSMNT_IOSIZE) { |
| if (ap->iosizelog > XFS_MAX_IO_LOG || |
| ap->iosizelog < XFS_MIN_IO_LOG) { |
| cmn_err(CE_WARN, |
| "XFS: invalid log iosize: %d [not %d-%d]", |
| ap->iosizelog, XFS_MIN_IO_LOG, |
| XFS_MAX_IO_LOG); |
| return XFS_ERROR(EINVAL); |
| } |
| |
| mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; |
| mp->m_readio_log = mp->m_writeio_log = ap->iosizelog; |
| } |
| |
| if (ap->flags & XFSMNT_IKEEP) |
| mp->m_flags |= XFS_MOUNT_IKEEP; |
| if (ap->flags & XFSMNT_DIRSYNC) |
| mp->m_flags |= XFS_MOUNT_DIRSYNC; |
| if (ap->flags & XFSMNT_ATTR2) |
| mp->m_flags |= XFS_MOUNT_ATTR2; |
| if (ap->flags & XFSMNT_NOATTR2) |
| mp->m_flags |= XFS_MOUNT_NOATTR2; |
| |
| if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE) |
| mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
| |
| /* |
| * no recovery flag requires a read-only mount |
| */ |
| if (ap->flags & XFSMNT_NORECOVERY) { |
| if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { |
| cmn_err(CE_WARN, |
| "XFS: tried to mount a FS read-write without recovery!"); |
| return XFS_ERROR(EINVAL); |
| } |
| mp->m_flags |= XFS_MOUNT_NORECOVERY; |
| } |
| |
| if (ap->flags & XFSMNT_NOUUID) |
| mp->m_flags |= XFS_MOUNT_NOUUID; |
| if (ap->flags & XFSMNT_BARRIER) |
| mp->m_flags |= XFS_MOUNT_BARRIER; |
| else |
| mp->m_flags &= ~XFS_MOUNT_BARRIER; |
| |
| if (ap->flags2 & XFSMNT2_FILESTREAMS) |
| mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
| |
| if (ap->flags & XFSMNT_DMAPI) |
| mp->m_flags |= XFS_MOUNT_DMAPI; |
| return 0; |
| } |
| |
| /* |
| * This function fills in xfs_mount_t fields based on mount args. |
| * Note: the superblock _has_ now been read in. |
| */ |
| STATIC int |
| xfs_finish_flags( |
| struct xfs_mount_args *ap, |
| struct xfs_mount *mp) |
| { |
| int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); |
| |
| /* Fail a mount where the logbuf is smaller then the log stripe */ |
| if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
| if ((ap->logbufsize <= 0) && |
| (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) { |
| mp->m_logbsize = mp->m_sb.sb_logsunit; |
| } else if (ap->logbufsize > 0 && |
| ap->logbufsize < mp->m_sb.sb_logsunit) { |
| cmn_err(CE_WARN, |
| "XFS: logbuf size must be greater than or equal to log stripe size"); |
| return XFS_ERROR(EINVAL); |
| } |
| } else { |
| /* Fail a mount if the logbuf is larger than 32K */ |
| if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) { |
| cmn_err(CE_WARN, |
| "XFS: logbuf size for version 1 logs must be 16K or 32K"); |
| return XFS_ERROR(EINVAL); |
| } |
| } |
| |
| /* |
| * mkfs'ed attr2 will turn on attr2 mount unless explicitly |
| * told by noattr2 to turn it off |
| */ |
| if (xfs_sb_version_hasattr2(&mp->m_sb) && |
| !(ap->flags & XFSMNT_NOATTR2)) |
| mp->m_flags |= XFS_MOUNT_ATTR2; |
| |
| /* |
| * prohibit r/w mounts of read-only filesystems |
| */ |
| if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { |
| cmn_err(CE_WARN, |
| "XFS: cannot mount a read-only filesystem as read-write"); |
| return XFS_ERROR(EROFS); |
| } |
| |
| /* |
| * check for shared mount. |
| */ |
| if (ap->flags & XFSMNT_SHARED) { |
| if (!xfs_sb_version_hasshared(&mp->m_sb)) |
| return XFS_ERROR(EINVAL); |
| |
| /* |
| * For IRIX 6.5, shared mounts must have the shared |
| * version bit set, have the persistent readonly |
| * field set, must be version 0 and can only be mounted |
| * read-only. |
| */ |
| if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) || |
| (mp->m_sb.sb_shared_vn != 0)) |
| return XFS_ERROR(EINVAL); |
| |
| mp->m_flags |= XFS_MOUNT_SHARED; |
| |
| /* |
| * Shared XFS V0 can't deal with DMI. Return EINVAL. |
| */ |
| if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI)) |
| return XFS_ERROR(EINVAL); |
| } |
| |
| if (ap->flags & XFSMNT_UQUOTA) { |
| mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
| if (ap->flags & XFSMNT_UQUOTAENF) |
| mp->m_qflags |= XFS_UQUOTA_ENFD; |
| } |
| |
| if (ap->flags & XFSMNT_GQUOTA) { |
| mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
| if (ap->flags & XFSMNT_GQUOTAENF) |
| mp->m_qflags |= XFS_OQUOTA_ENFD; |
| } else if (ap->flags & XFSMNT_PQUOTA) { |
| mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
| if (ap->flags & XFSMNT_PQUOTAENF) |
| mp->m_qflags |= XFS_OQUOTA_ENFD; |
| } |
| |
| return 0; |
| } |
| |
| STATIC int |
| xfs_fs_fill_super( |
| struct super_block *sb, |
| void *data, |
| int silent) |
| { |
| struct inode *root; |
| struct xfs_mount *mp = NULL; |
| struct xfs_mount_args *args; |
| int flags = 0, error = ENOMEM; |
| |
| args = xfs_args_allocate(sb, silent); |
| if (!args) |
| return -ENOMEM; |
| |
| mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
| if (!mp) |
| goto out_free_args; |
| |
| spin_lock_init(&mp->m_sb_lock); |
| mutex_init(&mp->m_ilock); |
| mutex_init(&mp->m_growlock); |
| atomic_set(&mp->m_active_trans, 0); |
| INIT_LIST_HEAD(&mp->m_sync_list); |
| spin_lock_init(&mp->m_sync_lock); |
| init_waitqueue_head(&mp->m_wait_single_sync_task); |
| |
| mp->m_super = sb; |
| sb->s_fs_info = mp; |
| |
| if (sb->s_flags & MS_RDONLY) |
| mp->m_flags |= XFS_MOUNT_RDONLY; |
| |
| error = xfs_parseargs(mp, (char *)data, args, 0); |
| if (error) |
| goto out_free_mp; |
| |
| sb_min_blocksize(sb, BBSIZE); |
| sb->s_export_op = &xfs_export_operations; |
| sb->s_qcop = &xfs_quotactl_operations; |
| sb->s_op = &xfs_super_operations; |
| |
| error = xfs_dmops_get(mp, args); |
| if (error) |
| goto out_free_mp; |
| error = xfs_qmops_get(mp, args); |
| if (error) |
| goto out_put_dmops; |
| |
| if (args->flags & XFSMNT_QUIET) |
| flags |= XFS_MFSI_QUIET; |
| |
| error = xfs_open_devices(mp, args); |
| if (error) |
| goto out_put_qmops; |
| |
| if (xfs_icsb_init_counters(mp)) |
| mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB; |
| |
| /* |
| * Setup flags based on mount(2) options and then the superblock |
| */ |
| error = xfs_start_flags(args, mp); |
| if (error) |
| goto out_destroy_counters; |
| error = xfs_readsb(mp, flags); |
| if (error) |
| goto out_destroy_counters; |
| error = xfs_finish_flags(args, mp); |
| if (error) |
| goto error2; |
| |
| error = xfs_setup_devices(mp); |
| if (error) |
| goto error2; |
| |
| if (mp->m_flags & XFS_MOUNT_BARRIER) |
| xfs_mountfs_check_barriers(mp); |
| |
| error = xfs_filestream_mount(mp); |
| if (error) |
| goto error2; |
| |
| error = xfs_mountfs(mp, flags); |
| if (error) |
| goto error2; |
| |
| XFS_SEND_MOUNT(mp, DM_RIGHT_NULL, args->mtpt, args->fsname); |
| |
| sb->s_dirt = 1; |
| sb->s_magic = XFS_SB_MAGIC; |
| sb->s_blocksize = mp->m_sb.sb_blocksize; |
| sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; |
| sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
| sb->s_time_gran = 1; |
| set_posix_acl_flag(sb); |
| |
| root = igrab(mp->m_rootip->i_vnode); |
| if (!root) { |
| error = ENOENT; |
| goto fail_unmount; |
| } |
| if (is_bad_inode(root)) { |
| error = EINVAL; |
| goto fail_vnrele; |
| } |
| sb->s_root = d_alloc_root(root); |
| if (!sb->s_root) { |
| error = ENOMEM; |
| goto fail_vnrele; |
| } |
| |
| mp->m_sync_work.w_syncer = xfs_sync_worker; |
| mp->m_sync_work.w_mount = mp; |
| mp->m_sync_task = kthread_run(xfssyncd, mp, "xfssyncd"); |
| if (IS_ERR(mp->m_sync_task)) { |
| error = -PTR_ERR(mp->m_sync_task); |
| goto fail_vnrele; |
| } |
| |
| xfs_itrace_exit(XFS_I(sb->s_root->d_inode)); |
| |
| kfree(args); |
| return 0; |
| |
| error2: |
| if (mp->m_sb_bp) |
| xfs_freesb(mp); |
| out_destroy_counters: |
| xfs_icsb_destroy_counters(mp); |
| xfs_close_devices(mp); |
| out_put_qmops: |
| xfs_qmops_put(mp); |
| out_put_dmops: |
| xfs_dmops_put(mp); |
| out_free_mp: |
| kfree(mp); |
| out_free_args: |
| kfree(args); |
| return -error; |
| |
| fail_vnrele: |
| if (sb->s_root) { |
| dput(sb->s_root); |
| sb->s_root = NULL; |
| } else { |
| iput(root); |
| } |
| |
| fail_unmount: |
| /* |
| * Blow away any referenced inode in the filestreams cache. |
| * This can and will cause log traffic as inodes go inactive |
| * here. |
| */ |
| xfs_filestream_unmount(mp); |
| |
| XFS_bflush(mp->m_ddev_targp); |
| error = xfs_unmount_flush(mp, 0); |
| WARN_ON(error); |
| |
| IRELE(mp->m_rootip); |
| |
| xfs_unmountfs(mp); |
| goto out_destroy_counters; |
| } |
| |
| STATIC int |
| xfs_fs_get_sb( |
| struct file_system_type *fs_type, |
| int flags, |
| const char *dev_name, |
| void *data, |
| struct vfsmount *mnt) |
| { |
| return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super, |
| mnt); |
| } |
| |
| static struct super_operations xfs_super_operations = { |
| .alloc_inode = xfs_fs_alloc_inode, |
| .destroy_inode = xfs_fs_destroy_inode, |
| .write_inode = xfs_fs_write_inode, |
| .clear_inode = xfs_fs_clear_inode, |
| .put_super = xfs_fs_put_super, |
| .write_super = xfs_fs_write_super, |
| .sync_fs = xfs_fs_sync_super, |
| .write_super_lockfs = xfs_fs_lockfs, |
| .statfs = xfs_fs_statfs, |
| .remount_fs = xfs_fs_remount, |
| .show_options = xfs_fs_show_options, |
| }; |
| |
| static struct quotactl_ops xfs_quotactl_operations = { |
| .quota_sync = xfs_fs_quotasync, |
| .get_xstate = xfs_fs_getxstate, |
| .set_xstate = xfs_fs_setxstate, |
| .get_xquota = xfs_fs_getxquota, |
| .set_xquota = xfs_fs_setxquota, |
| }; |
| |
| static struct file_system_type xfs_fs_type = { |
| .owner = THIS_MODULE, |
| .name = "xfs", |
| .get_sb = xfs_fs_get_sb, |
| .kill_sb = kill_block_super, |
| .fs_flags = FS_REQUIRES_DEV, |
| }; |
| |
| |
| STATIC int __init |
| init_xfs_fs( void ) |
| { |
| int error; |
| static char message[] __initdata = KERN_INFO \ |
| XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n"; |
| |
| printk(message); |
| |
| ktrace_init(64); |
| |
| error = xfs_init_zones(); |
| if (error < 0) |
| goto undo_zones; |
| |
| error = xfs_buf_init(); |
| if (error < 0) |
| goto undo_buffers; |
| |
| vn_init(); |
| xfs_init(); |
| uuid_init(); |
| vfs_initquota(); |
| |
| error = register_filesystem(&xfs_fs_type); |
| if (error) |
| goto undo_register; |
| return 0; |
| |
| undo_register: |
| xfs_buf_terminate(); |
| |
| undo_buffers: |
| xfs_destroy_zones(); |
| |
| undo_zones: |
| return error; |
| } |
| |
| STATIC void __exit |
| exit_xfs_fs( void ) |
| { |
| vfs_exitquota(); |
| unregister_filesystem(&xfs_fs_type); |
| xfs_cleanup(); |
| xfs_buf_terminate(); |
| xfs_destroy_zones(); |
| ktrace_uninit(); |
| } |
| |
| module_init(init_xfs_fs); |
| module_exit(exit_xfs_fs); |
| |
| MODULE_AUTHOR("Silicon Graphics, Inc."); |
| MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); |
| MODULE_LICENSE("GPL"); |