X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=fs%2Fxfs%2Flinux-2.6%2Fxfs_super.c;h=9f2e398a5616a364dbf444da495797b0e9ca3082;hb=453eac8a9aa417878a38bdfbccafd5f7ce4e8e4e;hp=1b60e46f527fa2104c271105e177fe270f86db3e;hpb=7c12f296500e1157872ef45b3f3bb06b4b73f1c1;p=safe%2Fjmp%2Flinux-2.6 diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index 1b60e46..9f2e398 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -15,10 +15,10 @@ * 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" @@ -36,6 +36,7 @@ #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_btree.h" +#include "xfs_btree_trace.h" #include "xfs_ialloc.h" #include "xfs_bmap.h" #include "xfs_rtalloc.h" @@ -43,15 +44,20 @@ #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 "xfs_da_btree.h" +#include "xfs_extfree_item.h" +#include "xfs_mru_cache.h" +#include "xfs_inode_item.h" +#include "xfs_sync.h" +#include "xfs_trace.h" #include #include @@ -60,43 +66,18 @@ #include #include #include +#include -static struct quotactl_ops xfs_quotactl_operations; -static struct super_operations xfs_super_operations; -static kmem_zone_t *xfs_vnode_zone; +static const struct super_operations xfs_super_operations; 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 = kmem_zalloc(sizeof(struct xfs_mount_args), KM_SLEEP); - 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 */ @@ -138,6 +119,23 @@ xfs_args_allocate( #define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */ #define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */ +/* + * Table driven mount option parser. + * + * Currently only used for remount, but it will be used for mount + * in the future, too. + */ +enum { + Opt_barrier, Opt_nobarrier, Opt_err +}; + +static const match_table_t tokens = { + {Opt_barrier, "barrier"}, + {Opt_nobarrier, "nobarrier"}, + {Opt_err, NULL} +}; + + STATIC unsigned long suffix_strtoul(char *s, char **endp, unsigned int base) { @@ -161,26 +159,54 @@ suffix_strtoul(char *s, char **endp, unsigned int base) return simple_strtoul((const char *)s, endp, base) << shift_left_factor; } +/* + * This function fills in xfs_mount_t fields based on mount args. + * Note: the superblock has _not_ yet been read in. + * + * Note that this function leaks the various device name allocations on + * failure. The caller takes care of them. + */ STATIC int xfs_parseargs( struct xfs_mount *mp, char *options, - struct xfs_mount_args *args, - int update) + char **mtpt) { + struct super_block *sb = mp->m_super; char *this_char, *value, *eov; - int dsunit, dswidth, vol_dsunit, vol_dswidth; - int iosize; + int dsunit = 0; + int dswidth = 0; + int iosize = 0; int dmapi_implies_ikeep = 1; + __uint8_t iosizelog = 0; - args->flags |= XFSMNT_BARRIER; - args->flags2 |= XFSMNT2_COMPAT_IOSIZE; + /* + * Copy binary VFS mount flags we are interested in. + */ + if (sb->s_flags & MS_RDONLY) + mp->m_flags |= XFS_MOUNT_RDONLY; + if (sb->s_flags & MS_DIRSYNC) + mp->m_flags |= XFS_MOUNT_DIRSYNC; + if (sb->s_flags & MS_SYNCHRONOUS) + mp->m_flags |= XFS_MOUNT_WSYNC; + + /* + * Set some default flags that could be cleared by the mount option + * parsing. + */ + mp->m_flags |= XFS_MOUNT_BARRIER; + mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; + mp->m_flags |= XFS_MOUNT_SMALL_INUMS; + + /* + * These can be overridden by the mount option parsing. + */ + mp->m_logbufs = -1; + mp->m_logbsize = -1; if (!options) goto done; - iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0; - while ((this_char = strsep(&options, ",")) != NULL) { if (!*this_char) continue; @@ -194,7 +220,7 @@ xfs_parseargs( this_char); return EINVAL; } - args->logbufs = simple_strtoul(value, &eov, 10); + mp->m_logbufs = simple_strtoul(value, &eov, 10); } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { if (!value || !*value) { cmn_err(CE_WARN, @@ -202,7 +228,7 @@ xfs_parseargs( this_char); return EINVAL; } - args->logbufsize = suffix_strtoul(value, &eov, 10); + mp->m_logbsize = suffix_strtoul(value, &eov, 10); } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { if (!value || !*value) { cmn_err(CE_WARN, @@ -210,7 +236,9 @@ xfs_parseargs( this_char); return EINVAL; } - strncpy(args->logname, value, MAXNAMELEN); + mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); + if (!mp->m_logname) + return ENOMEM; } else if (!strcmp(this_char, MNTOPT_MTPT)) { if (!value || !*value) { cmn_err(CE_WARN, @@ -218,7 +246,9 @@ xfs_parseargs( this_char); return EINVAL; } - strncpy(args->mtpt, value, MAXNAMELEN); + *mtpt = kstrndup(value, MAXNAMELEN, GFP_KERNEL); + if (!*mtpt) + return ENOMEM; } else if (!strcmp(this_char, MNTOPT_RTDEV)) { if (!value || !*value) { cmn_err(CE_WARN, @@ -226,7 +256,9 @@ xfs_parseargs( this_char); return EINVAL; } - strncpy(args->rtname, value, MAXNAMELEN); + mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); + if (!mp->m_rtname) + return ENOMEM; } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { if (!value || !*value) { cmn_err(CE_WARN, @@ -235,8 +267,7 @@ xfs_parseargs( return EINVAL; } iosize = simple_strtoul(value, &eov, 10); - args->flags |= XFSMNT_IOSIZE; - args->iosizelog = (uint8_t) iosize; + iosizelog = ffs(iosize) - 1; } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { if (!value || !*value) { cmn_err(CE_WARN, @@ -245,8 +276,7 @@ xfs_parseargs( return EINVAL; } iosize = suffix_strtoul(value, &eov, 10); - args->flags |= XFSMNT_IOSIZE; - args->iosizelog = ffs(iosize) - 1; + iosizelog = ffs(iosize) - 1; } else if (!strcmp(this_char, MNTOPT_GRPID) || !strcmp(this_char, MNTOPT_BSDGROUPS)) { mp->m_flags |= XFS_MOUNT_GRPID; @@ -254,23 +284,15 @@ xfs_parseargs( !strcmp(this_char, MNTOPT_SYSVGROUPS)) { mp->m_flags &= ~XFS_MOUNT_GRPID; } else if (!strcmp(this_char, MNTOPT_WSYNC)) { - args->flags |= XFSMNT_WSYNC; + mp->m_flags |= XFS_MOUNT_WSYNC; } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { - args->flags |= XFSMNT_OSYNCISOSYNC; + mp->m_flags |= XFS_MOUNT_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 + mp->m_flags |= XFS_MOUNT_NORECOVERY; } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { - args->flags |= XFSMNT_NOALIGN; + mp->m_flags |= XFS_MOUNT_NOALIGN; } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { - args->flags |= XFSMNT_SWALLOC; + mp->m_flags |= XFS_MOUNT_SWALLOC; } else if (!strcmp(this_char, MNTOPT_SUNIT)) { if (!value || !*value) { cmn_err(CE_WARN, @@ -288,7 +310,7 @@ xfs_parseargs( } dswidth = simple_strtoul(value, &eov, 10); } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { - args->flags &= ~XFSMNT_32BITINODES; + mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; #if !XFS_BIG_INUMS cmn_err(CE_WARN, "XFS: %s option not allowed on this system", @@ -296,56 +318,61 @@ xfs_parseargs( return EINVAL; #endif } else if (!strcmp(this_char, MNTOPT_NOUUID)) { - args->flags |= XFSMNT_NOUUID; + mp->m_flags |= XFS_MOUNT_NOUUID; } else if (!strcmp(this_char, MNTOPT_BARRIER)) { - args->flags |= XFSMNT_BARRIER; + mp->m_flags |= XFS_MOUNT_BARRIER; } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { - args->flags &= ~XFSMNT_BARRIER; + mp->m_flags &= ~XFS_MOUNT_BARRIER; } else if (!strcmp(this_char, MNTOPT_IKEEP)) { - args->flags |= XFSMNT_IKEEP; + mp->m_flags |= XFS_MOUNT_IKEEP; } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { dmapi_implies_ikeep = 0; - args->flags &= ~XFSMNT_IKEEP; + mp->m_flags &= ~XFS_MOUNT_IKEEP; } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { - args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE; + mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { - args->flags2 |= XFSMNT2_COMPAT_IOSIZE; + mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; } else if (!strcmp(this_char, MNTOPT_ATTR2)) { - args->flags |= XFSMNT_ATTR2; + mp->m_flags |= XFS_MOUNT_ATTR2; } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { - args->flags &= ~XFSMNT_ATTR2; - args->flags |= XFSMNT_NOATTR2; + mp->m_flags &= ~XFS_MOUNT_ATTR2; + mp->m_flags |= XFS_MOUNT_NOATTR2; } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { - args->flags2 |= XFSMNT2_FILESTREAMS; + mp->m_flags |= XFS_MOUNT_FILESTREAMS; } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { - args->flags &= ~(XFSMNT_UQUOTAENF|XFSMNT_UQUOTA); - args->flags &= ~(XFSMNT_GQUOTAENF|XFSMNT_GQUOTA); + mp->m_qflags &= ~(XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | + XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | + XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | + XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD); } else if (!strcmp(this_char, MNTOPT_QUOTA) || !strcmp(this_char, MNTOPT_UQUOTA) || !strcmp(this_char, MNTOPT_USRQUOTA)) { - args->flags |= XFSMNT_UQUOTA | XFSMNT_UQUOTAENF; + mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | + XFS_UQUOTA_ENFD); } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || !strcmp(this_char, MNTOPT_UQUOTANOENF)) { - args->flags |= XFSMNT_UQUOTA; - args->flags &= ~XFSMNT_UQUOTAENF; + mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); + mp->m_qflags &= ~XFS_UQUOTA_ENFD; } else if (!strcmp(this_char, MNTOPT_PQUOTA) || !strcmp(this_char, MNTOPT_PRJQUOTA)) { - args->flags |= XFSMNT_PQUOTA | XFSMNT_PQUOTAENF; + mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | + XFS_OQUOTA_ENFD); } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { - args->flags |= XFSMNT_PQUOTA; - args->flags &= ~XFSMNT_PQUOTAENF; + mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); + mp->m_qflags &= ~XFS_OQUOTA_ENFD; } else if (!strcmp(this_char, MNTOPT_GQUOTA) || !strcmp(this_char, MNTOPT_GRPQUOTA)) { - args->flags |= XFSMNT_GQUOTA | XFSMNT_GQUOTAENF; + mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | + XFS_OQUOTA_ENFD); } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { - args->flags |= XFSMNT_GQUOTA; - args->flags &= ~XFSMNT_GQUOTAENF; + mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); + mp->m_qflags &= ~XFS_OQUOTA_ENFD; } else if (!strcmp(this_char, MNTOPT_DMAPI)) { - args->flags |= XFSMNT_DMAPI; + mp->m_flags |= XFS_MOUNT_DMAPI; } else if (!strcmp(this_char, MNTOPT_XDSM)) { - args->flags |= XFSMNT_DMAPI; + mp->m_flags |= XFS_MOUNT_DMAPI; } else if (!strcmp(this_char, MNTOPT_DMI)) { - args->flags |= XFSMNT_DMAPI; + mp->m_flags |= XFS_MOUNT_DMAPI; } else if (!strcmp(this_char, "ihashsize")) { cmn_err(CE_WARN, "XFS: ihashsize no longer used, option is deprecated."); @@ -363,27 +390,37 @@ xfs_parseargs( } } - 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; - } + /* + * no recovery flag requires a read-only mount + */ + if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && + !(mp->m_flags & XFS_MOUNT_RDONLY)) { + cmn_err(CE_WARN, "XFS: no-recovery mounts must be read-only."); + return EINVAL; } - if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) { + if ((mp->m_flags & XFS_MOUNT_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)) { +#ifndef CONFIG_XFS_QUOTA + if (XFS_IS_QUOTA_RUNNING(mp)) { + cmn_err(CE_WARN, + "XFS: quota support not available in this kernel."); + return EINVAL; + } +#endif + + if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && + (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { cmn_err(CE_WARN, "XFS: cannot mount with both project and group quota"); return EINVAL; } - if ((args->flags & XFSMNT_DMAPI) && *args->mtpt == '\0') { + if ((mp->m_flags & XFS_MOUNT_DMAPI) && (!*mtpt || *mtpt[0] == '\0')) { printk("XFS: %s option needs the mount point option as well\n", MNTOPT_DMAPI); return EINVAL; @@ -411,27 +448,66 @@ xfs_parseargs( * 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 ((mp->m_flags & XFS_MOUNT_DMAPI) && dmapi_implies_ikeep) + mp->m_flags |= XFS_MOUNT_IKEEP; - if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { +done: + if (!(mp->m_flags & XFS_MOUNT_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. + */ if (dsunit) { - args->sunit = dsunit; - args->flags |= XFSMNT_RETERR; - } else { - args->sunit = vol_dsunit; + mp->m_dalign = dsunit; + mp->m_flags |= XFS_MOUNT_RETERR; } - dswidth ? (args->swidth = dswidth) : - (args->swidth = vol_dswidth); - } else { - args->sunit = args->swidth = 0; + + if (dswidth) + mp->m_swidth = dswidth; + } + + if (mp->m_logbufs != -1 && + mp->m_logbufs != 0 && + (mp->m_logbufs < XLOG_MIN_ICLOGS || + mp->m_logbufs > XLOG_MAX_ICLOGS)) { + cmn_err(CE_WARN, + "XFS: invalid logbufs value: %d [not %d-%d]", + mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); + return XFS_ERROR(EINVAL); + } + if (mp->m_logbsize != -1 && + mp->m_logbsize != 0 && + (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || + mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || + !is_power_of_2(mp->m_logbsize))) { + cmn_err(CE_WARN, + "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", + mp->m_logbsize); + return XFS_ERROR(EINVAL); + } + + mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); + if (!mp->m_fsname) + return ENOMEM; + mp->m_fsname_len = strlen(mp->m_fsname) + 1; + + if (iosizelog) { + if (iosizelog > XFS_MAX_IO_LOG || + iosizelog < XFS_MIN_IO_LOG) { + cmn_err(CE_WARN, + "XFS: invalid log iosize: %d [not %d-%d]", + iosizelog, XFS_MIN_IO_LOG, + XFS_MAX_IO_LOG); + return XFS_ERROR(EINVAL); + } + + mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; + mp->m_readio_log = iosizelog; + mp->m_writeio_log = iosizelog; } -done: - if (args->flags & XFSMNT_32BITINODES) - mp->m_flags |= XFS_MOUNT_SMALL_INUMS; - if (args->flags2) - args->flags |= XFSMNT_FLAGS2; return 0; } @@ -449,7 +525,6 @@ xfs_showargs( /* 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 }, @@ -505,15 +580,19 @@ xfs_showargs( 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); + /* Either project or group quotas can be active, not both */ + + if (mp->m_qflags & XFS_PQUOTA_ACCT) { + if (mp->m_qflags & XFS_OQUOTA_ENFD) + seq_puts(m, "," MNTOPT_PRJQUOTA); + else + seq_puts(m, "," MNTOPT_PQUOTANOENF); + } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { + if (mp->m_qflags & XFS_OQUOTA_ENFD) + seq_puts(m, "," MNTOPT_GRPQUOTA); + else + seq_puts(m, "," MNTOPT_GQUOTANOENF); + } if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) seq_puts(m, "," MNTOPT_NOQUOTA); @@ -542,7 +621,7 @@ xfs_max_file_offset( */ #if BITS_PER_LONG == 32 -# if defined(CONFIG_LBD) +# if defined(CONFIG_LBDAF) ASSERT(sizeof(sector_t) == 8); pagefactor = PAGE_CACHE_SIZE; bitshift = BITS_PER_LONG; @@ -554,116 +633,7 @@ xfs_max_file_offset( 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 +STATIC int xfs_blkdev_get( xfs_mount_t *mp, const char *name, @@ -671,7 +641,7 @@ xfs_blkdev_get( { int error = 0; - *bdevp = open_bdev_excl(name, 0, mp); + *bdevp = open_bdev_exclusive(name, FMODE_READ|FMODE_WRITE, mp); if (IS_ERR(*bdevp)) { error = PTR_ERR(*bdevp); printk("XFS: Invalid device [%s], error=%d\n", name, error); @@ -680,12 +650,12 @@ xfs_blkdev_get( return -error; } -void +STATIC void xfs_blkdev_put( struct block_device *bdev) { if (bdev) - close_bdev_excl(bdev); + close_bdev_exclusive(bdev, FMODE_READ|FMODE_WRITE); } /* @@ -722,7 +692,7 @@ xfs_barrier_test( return error; } -void +STATIC void xfs_mountfs_check_barriers(xfs_mount_t *mp) { int error; @@ -734,14 +704,6 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp) 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"); @@ -765,39 +727,170 @@ xfs_blkdev_issue_flush( 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) { + struct block_device *logdev = mp->m_logdev_targp->bt_bdev; + xfs_free_buftarg(mp, mp->m_logdev_targp); + xfs_blkdev_put(logdev); + } + if (mp->m_rtdev_targp) { + struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; + xfs_free_buftarg(mp, mp->m_rtdev_targp); + xfs_blkdev_put(rtdev); + } + xfs_free_buftarg(mp, 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 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 (mp->m_logname) { + error = xfs_blkdev_get(mp, mp->m_logname, &logdev); + if (error) + goto out; + } + + if (mp->m_rtname) { + error = xfs_blkdev_get(mp, mp->m_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, mp->m_rtdev_targp); + out_free_ddev_targ: + xfs_free_buftarg(mp, 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, + struct xfs_ail *ailp, xfs_lsn_t threshold_lsn) { - mp->m_ail.xa_target = threshold_lsn; - wake_up_process(mp->m_ail.xa_task); + ailp->xa_target = threshold_lsn; + wake_up_process(ailp->xa_task); } -int +STATIC int xfsaild( void *data) { - xfs_mount_t *mp = (xfs_mount_t *)data; + struct xfs_ail *ailp = data; xfs_lsn_t last_pushed_lsn = 0; - long tout = 0; + long tout = 0; /* milliseconds */ while (!kthread_should_stop()) { - if (tout) - schedule_timeout_interruptible(msecs_to_jiffies(tout)); - tout = 1000; + schedule_timeout_interruptible(tout ? + msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT); /* swsusp */ try_to_freeze(); - ASSERT(mp->m_log); - if (XFS_FORCED_SHUTDOWN(mp)) + ASSERT(ailp->xa_mount->m_log); + if (XFS_FORCED_SHUTDOWN(ailp->xa_mount)) continue; - tout = xfsaild_push(mp, &last_pushed_lsn); + tout = xfsaild_push(ailp, &last_pushed_lsn); } return 0; @@ -805,84 +898,127 @@ xfsaild( int xfsaild_start( - xfs_mount_t *mp) + struct xfs_ail *ailp) { - 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); + ailp->xa_target = 0; + ailp->xa_task = kthread_run(xfsaild, ailp, "xfsaild"); + if (IS_ERR(ailp->xa_task)) + return -PTR_ERR(ailp->xa_task); return 0; } void xfsaild_stop( - xfs_mount_t *mp) + struct xfs_ail *ailp) { - kthread_stop(mp->m_ail.xa_task); + kthread_stop(ailp->xa_task); } - +/* Catch misguided souls that try to use this interface on XFS */ 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); + BUG(); + return NULL; } +/* + * Now that the generic code is guaranteed not to be accessing + * the linux inode, we can reclaim the inode. + */ STATIC void xfs_fs_destroy_inode( struct inode *inode) { - kmem_zone_free(xfs_vnode_zone, vn_from_inode(inode)); + struct xfs_inode *ip = XFS_I(inode); + + xfs_itrace_entry(ip); + + XFS_STATS_INC(vn_reclaim); + + /* bad inode, get out here ASAP */ + if (is_bad_inode(inode)) + goto out_reclaim; + + xfs_ioend_wait(ip); + + ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); + + /* + * We should never get here with one of the reclaim flags already set. + */ + ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); + ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); + + /* + * We always use background reclaim here because even if the + * inode is clean, it still may be under IO and hence we have + * to take the flush lock. The background reclaim path handles + * this more efficiently than we can here, so simply let background + * reclaim tear down all inodes. + */ +out_reclaim: + xfs_inode_set_reclaim_tag(ip); } +/* + * Slab object creation initialisation for the XFS inode. + * This covers only the idempotent fields in the XFS inode; + * all other fields need to be initialised on allocation + * from the slab. This avoids the need to repeatedly intialise + * fields in the xfs inode that left in the initialise state + * when freeing the inode. + */ STATIC void xfs_fs_inode_init_once( - void *vnode) + void *inode) { - inode_init_once(vn_to_inode((bhv_vnode_t *)vnode)); -} + struct xfs_inode *ip = inode; -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; + memset(ip, 0, sizeof(struct xfs_inode)); - xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); - if (!xfs_ioend_zone) - goto out_destroy_vnode_zone; + /* vfs inode */ + inode_init_once(VFS_I(ip)); - 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; + /* xfs inode */ + atomic_set(&ip->i_iocount, 0); + atomic_set(&ip->i_pincount, 0); + spin_lock_init(&ip->i_flags_lock); + init_waitqueue_head(&ip->i_ipin_wait); + /* + * Because we want to use a counting completion, complete + * the flush completion once to allow a single access to + * the flush completion without blocking. + */ + init_completion(&ip->i_flush); + complete(&ip->i_flush); - out_free_ioend_zone: - kmem_zone_destroy(xfs_ioend_zone); - out_destroy_vnode_zone: - kmem_zone_destroy(xfs_vnode_zone); - out: - return -ENOMEM; + mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, + "xfsino", ip->i_ino); } +/* + * Dirty the XFS inode when mark_inode_dirty_sync() is called so that + * we catch unlogged VFS level updates to the inode. Care must be taken + * here - the transaction code calls mark_inode_dirty_sync() to mark the + * VFS inode dirty in a transaction and clears the i_update_core field; + * it must clear the field after calling mark_inode_dirty_sync() to + * correctly indicate that the dirty state has been propagated into the + * inode log item. + * + * We need the barrier() to maintain correct ordering between unlogged + * updates and the transaction commit code that clears the i_update_core + * field. This requires all updates to be completed before marking the + * inode dirty. + */ STATIC void -xfs_destroy_zones(void) +xfs_fs_dirty_inode( + struct inode *inode) { - mempool_destroy(xfs_ioend_pool); - kmem_zone_destroy(xfs_vnode_zone); - kmem_zone_destroy(xfs_ioend_zone); + barrier(); + XFS_I(inode)->i_update_core = 1; } /* @@ -896,22 +1032,58 @@ xfs_fs_write_inode( struct inode *inode, int sync) { + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; int error = 0; - int flags = 0; - xfs_itrace_entry(XFS_I(inode)); + xfs_itrace_entry(ip); + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + if (sync) { - filemap_fdatawait(inode->i_mapping); - flags |= FLUSH_SYNC; + error = xfs_wait_on_pages(ip, 0, -1); + if (error) + goto out; } - error = xfs_inode_flush(XFS_I(inode), flags); + + /* + * Bypass inodes which have already been cleaned by + * the inode flush clustering code inside xfs_iflush + */ + if (xfs_inode_clean(ip)) + goto out; + + /* + * We make this non-blocking if the inode is contended, return + * EAGAIN to indicate to the caller that they did not succeed. + * This prevents the flush path from blocking on inodes inside + * another operation right now, they get caught later by xfs_sync. + */ + if (sync) { + xfs_ilock(ip, XFS_ILOCK_SHARED); + xfs_iflock(ip); + + error = xfs_iflush(ip, XFS_IFLUSH_SYNC); + } else { + error = EAGAIN; + if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) + goto out; + if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) + goto out_unlock; + + error = xfs_iflush(ip, XFS_IFLUSH_ASYNC_NOBLOCK); + } + + out_unlock: + xfs_iunlock(ip, XFS_ILOCK_SHARED); + out: /* * 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); - + xfs_mark_inode_dirty_sync(ip); return -error; } @@ -921,228 +1093,105 @@ xfs_fs_clear_inode( { xfs_inode_t *ip = XFS_I(inode); + xfs_itrace_entry(ip); + XFS_STATS_INC(vn_rele); + XFS_STATS_INC(vn_remove); + XFS_STATS_DEC(vn_active); + /* - * 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. + * The iolock is used by the file system to coordinate reads, + * writes, and block truncates. Up to this point the lock + * protected concurrent accesses by users of the inode. But + * from here forward we're doing some final processing of the + * inode because we're done with it, and although we reuse the + * iolock for protection it is really a distinct lock class + * (in the lockdep sense) from before. To keep lockdep happy + * (and basically indicate what we are doing), we explicitly + * re-init the iolock here. */ - 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(!rwsem_is_locked(&ip->i_iolock.mr_lock)); + mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); - ASSERT(XFS_I(inode) == NULL); + xfs_inactive(ip); } -/* - * 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 *)) +xfs_free_fsname( + struct xfs_mount *mp) { - 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); + kfree(mp->m_fsname); + kfree(mp->m_rtname); + kfree(mp->m_logname); } -/* - * 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) +xfs_fs_put_super( + struct super_block *sb) { - 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); -} + struct xfs_mount *mp = XFS_M(sb); -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; + xfs_syncd_stop(mp); - spin_lock(&mp->m_sync_lock); + if (!(sb->s_flags & MS_RDONLY)) { /* - * 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. + * XXX(hch): this should be SYNC_WAIT. + * + * Or more likely not needed at all because the VFS is already + * calling ->sync_fs after shutting down all filestem + * operations and just before calling ->put_super. */ - 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, sizeof(struct bhv_vfs_sync_work)); - } + xfs_sync_data(mp, 0); + xfs_sync_attr(mp, 0); } - return 0; -} + XFS_SEND_PREUNMOUNT(mp); -STATIC void -xfs_fs_put_super( - struct super_block *sb) -{ - struct xfs_mount *mp = XFS_M(sb); - int error; + /* + * 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); - kthread_stop(mp->m_sync_task); + XFS_bflush(mp->m_ddev_targp); - xfs_sync(mp, SYNC_ATTR | SYNC_DELWRI); - error = xfs_unmount(mp, 0, NULL); - if (error) - printk("XFS: unmount got error=%d\n", error); -} + XFS_SEND_UNMOUNT(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; + xfs_unmountfs(mp); + xfs_freesb(mp); + xfs_icsb_destroy_counters(mp); + xfs_close_devices(mp); + xfs_dmops_put(mp); + xfs_free_fsname(mp); + kfree(mp); } STATIC int -xfs_fs_sync_super( +xfs_fs_sync_fs( 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. + * Not much we can do for the first async pass. Writing out the + * superblock would be counter-productive as we are going to redirty + * when writing out other data and metadata (and writing out a single + * block is quite fast anyway). + * + * Try to asynchronously kick off quota syncing at least. */ - 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; + if (!wait) { + xfs_qm_sync(mp, SYNC_TRYLOCK); + return 0; + } - error = xfs_sync(mp, flags); - sb->s_dirt = 0; + error = xfs_quiesce_data(mp); + if (error) + return -error; - if (unlikely(laptop_mode)) { + if (laptop_mode) { int prev_sync_seq = mp->m_sync_seq; /* @@ -1161,7 +1210,7 @@ xfs_fs_sync_super( mp->m_sync_seq != prev_sync_seq); } - return -error; + return 0; } STATIC int @@ -1171,6 +1220,7 @@ xfs_fs_statfs( { struct xfs_mount *mp = XFS_M(dentry->d_sb); xfs_sb_t *sbp = &mp->m_sb; + struct xfs_inode *ip = XFS_I(dentry->d_inode); __uint64_t fakeinos, id; xfs_extlen_t lsize; @@ -1190,22 +1240,19 @@ xfs_fs_statfs( 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_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); + if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || + ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == + (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) + xfs_qm_statvfs(ip, statp); return 0; } @@ -1216,29 +1263,103 @@ xfs_fs_remount( char *options) { struct xfs_mount *mp = XFS_M(sb); - struct xfs_mount_args *args = xfs_args_allocate(sb, 0); + substring_t args[MAX_OPT_ARGS]; + char *p; int error; - error = xfs_parseargs(mp, options, args, 1); - if (!error) - error = xfs_mntupdate(mp, flags, args); - kmem_free(args, sizeof(*args)); - return -error; + while ((p = strsep(&options, ",")) != NULL) { + int token; + + if (!*p) + continue; + + token = match_token(p, tokens, args); + switch (token) { + case Opt_barrier: + mp->m_flags |= XFS_MOUNT_BARRIER; + + /* + * Test if barriers are actually working if we can, + * else delay this check until the filesystem is + * marked writeable. + */ + if (!(mp->m_flags & XFS_MOUNT_RDONLY)) + xfs_mountfs_check_barriers(mp); + break; + case Opt_nobarrier: + mp->m_flags &= ~XFS_MOUNT_BARRIER; + break; + default: + /* + * Logically we would return an error here to prevent + * users from believing they might have changed + * mount options using remount which can't be changed. + * + * But unfortunately mount(8) adds all options from + * mtab and fstab to the mount arguments in some cases + * so we can't blindly reject options, but have to + * check for each specified option if it actually + * differs from the currently set option and only + * reject it if that's the case. + * + * Until that is implemented we return success for + * every remount request, and silently ignore all + * options that we can't actually change. + */ +#if 0 + printk(KERN_INFO + "XFS: mount option \"%s\" not supported for remount\n", p); + return -EINVAL; +#else + break; +#endif + } + } + + /* ro -> rw */ + if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { + mp->m_flags &= ~XFS_MOUNT_RDONLY; + if (mp->m_flags & XFS_MOUNT_BARRIER) + xfs_mountfs_check_barriers(mp); + + /* + * If this is the first remount to writeable state we + * might have some superblock changes to update. + */ + if (mp->m_update_flags) { + error = xfs_mount_log_sb(mp, mp->m_update_flags); + if (error) { + cmn_err(CE_WARN, + "XFS: failed to write sb changes"); + return error; + } + mp->m_update_flags = 0; + } + } + + /* rw -> ro */ + if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { + xfs_quiesce_data(mp); + xfs_quiesce_attr(mp); + mp->m_flags |= XFS_MOUNT_RDONLY; + } + + return 0; } /* * 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 + * need to take care of the metadata. Once that's done write a dummy * record to dirty the log in case of a crash while frozen. */ -STATIC void -xfs_fs_lockfs( +STATIC int +xfs_fs_freeze( struct super_block *sb) { struct xfs_mount *mp = XFS_M(sb); - xfs_attr_quiesce(mp); - xfs_fs_log_dummy(mp); + xfs_quiesce_attr(mp); + return -xfs_fs_log_dummy(mp); } STATIC int @@ -1249,55 +1370,54 @@ xfs_fs_show_options( return -xfs_showargs(XFS_M(mnt->mnt_sb), m); } +/* + * This function fills in xfs_mount_t fields based on mount args. + * Note: the superblock _has_ now been read in. + */ 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) +xfs_finish_flags( + struct xfs_mount *mp) { - return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XGETQSTAT, 0, (caddr_t)fqs); -} + int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); + + /* Fail a mount where the logbuf is smaller than the log stripe */ + if (xfs_sb_version_haslogv2(&mp->m_sb)) { + if (mp->m_logbsize <= 0 && + mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { + mp->m_logbsize = mp->m_sb.sb_logsunit; + } else if (mp->m_logbsize > 0 && + mp->m_logbsize < 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 (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { + cmn_err(CE_WARN, + "XFS: logbuf size for version 1 logs must be 16K or 32K"); + return XFS_ERROR(EINVAL); + } + } -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); -} + /* + * 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) && + !(mp->m_flags & XFS_MOUNT_NOATTR2)) + mp->m_flags |= XFS_MOUNT_ATTR2; -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); -} + /* + * 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); + } -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); + return 0; } STATIC int @@ -1308,11 +1428,16 @@ xfs_fs_fill_super( { struct inode *root; struct xfs_mount *mp = NULL; - struct xfs_mount_args *args = xfs_args_allocate(sb, silent); - int error; + int flags = 0, error = ENOMEM; + char *mtpt = NULL; - mp = xfs_mount_init(); + mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); + if (!mp) + goto out; + spin_lock_init(&mp->m_sb_lock); + 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); @@ -1320,23 +1445,57 @@ xfs_fs_fill_super( 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); + error = xfs_parseargs(mp, (char *)data, &mtpt); if (error) - goto fail_vfsop; + goto out_free_fsname; sb_min_blocksize(sb, BBSIZE); + sb->s_xattr = xfs_xattr_handlers; sb->s_export_op = &xfs_export_operations; +#ifdef CONFIG_XFS_QUOTA sb->s_qcop = &xfs_quotactl_operations; +#endif sb->s_op = &xfs_super_operations; - error = xfs_mount(mp, args, NULL); + error = xfs_dmops_get(mp); if (error) - goto fail_vfsop; + goto out_free_fsname; + + if (silent) + flags |= XFS_MFSI_QUIET; + + error = xfs_open_devices(mp); + if (error) + goto out_put_dmops; + + if (xfs_icsb_init_counters(mp)) + mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB; + + error = xfs_readsb(mp, flags); + if (error) + goto out_destroy_counters; + + error = xfs_finish_flags(mp); + if (error) + goto out_free_sb; + + error = xfs_setup_devices(mp); + if (error) + goto out_free_sb; + + if (mp->m_flags & XFS_MOUNT_BARRIER) + xfs_mountfs_check_barriers(mp); + + error = xfs_filestream_mount(mp); + if (error) + goto out_free_sb; + + error = xfs_mountfs(mp); + if (error) + goto out_filestream_unmount; + + XFS_SEND_MOUNT(mp, DM_RIGHT_NULL, mtpt, mp->m_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; @@ -1344,7 +1503,7 @@ xfs_fs_fill_super( sb->s_time_gran = 1; set_posix_acl_flag(sb); - root = igrab(mp->m_rootip->i_vnode); + root = igrab(VFS_I(mp->m_rootip)); if (!root) { error = ENOENT; goto fail_unmount; @@ -1359,20 +1518,30 @@ xfs_fs_fill_super( 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); + error = xfs_syncd_init(mp); + if (error) goto fail_vnrele; - } - xfs_itrace_exit(XFS_I(sb->s_root->d_inode)); - - kmem_free(args, sizeof(*args)); + kfree(mtpt); return 0; -fail_vnrele: + out_filestream_unmount: + xfs_filestream_unmount(mp); + out_free_sb: + xfs_freesb(mp); + out_destroy_counters: + xfs_icsb_destroy_counters(mp); + xfs_close_devices(mp); + out_put_dmops: + xfs_dmops_put(mp); + out_free_fsname: + xfs_free_fsname(mp); + kfree(mtpt); + kfree(mp); + out: + return -error; + + fail_vnrele: if (sb->s_root) { dput(sb->s_root); sb->s_root = NULL; @@ -1380,12 +1549,18 @@ fail_vnrele: iput(root); } -fail_unmount: - xfs_unmount(mp, 0, NULL); + 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); -fail_vfsop: - kmem_free(args, sizeof(*args)); - return -error; + xfs_unmountfs(mp); + goto out_free_sb; } STATIC int @@ -1400,28 +1575,20 @@ xfs_fs_get_sb( mnt); } -static struct super_operations xfs_super_operations = { +static const struct super_operations xfs_super_operations = { .alloc_inode = xfs_fs_alloc_inode, .destroy_inode = xfs_fs_destroy_inode, + .dirty_inode = xfs_fs_dirty_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, + .sync_fs = xfs_fs_sync_fs, + .freeze_fs = xfs_fs_freeze, .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", @@ -1430,55 +1597,208 @@ static struct file_system_type xfs_fs_type = { .fs_flags = FS_REQUIRES_DEV, }; +STATIC int __init +xfs_init_zones(void) +{ + + xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); + if (!xfs_ioend_zone) + goto out; + + xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, + xfs_ioend_zone); + if (!xfs_ioend_pool) + goto out_destroy_ioend_zone; + + xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), + "xfs_log_ticket"); + if (!xfs_log_ticket_zone) + goto out_destroy_ioend_pool; + + xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), + "xfs_bmap_free_item"); + if (!xfs_bmap_free_item_zone) + goto out_destroy_log_ticket_zone; + + xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), + "xfs_btree_cur"); + if (!xfs_btree_cur_zone) + goto out_destroy_bmap_free_item_zone; + + xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), + "xfs_da_state"); + if (!xfs_da_state_zone) + goto out_destroy_btree_cur_zone; + + xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); + if (!xfs_dabuf_zone) + goto out_destroy_da_state_zone; + + xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); + if (!xfs_ifork_zone) + goto out_destroy_dabuf_zone; + + xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); + if (!xfs_trans_zone) + goto out_destroy_ifork_zone; + + /* + * The size of the zone allocated buf log item is the maximum + * size possible under XFS. This wastes a little bit of memory, + * but it is much faster. + */ + xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + + (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) / + NBWORD) * sizeof(int))), "xfs_buf_item"); + if (!xfs_buf_item_zone) + goto out_destroy_trans_zone; + + xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + + ((XFS_EFD_MAX_FAST_EXTENTS - 1) * + sizeof(xfs_extent_t))), "xfs_efd_item"); + if (!xfs_efd_zone) + goto out_destroy_buf_item_zone; + + xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + + ((XFS_EFI_MAX_FAST_EXTENTS - 1) * + sizeof(xfs_extent_t))), "xfs_efi_item"); + if (!xfs_efi_zone) + goto out_destroy_efd_zone; + + xfs_inode_zone = + kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", + KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, + xfs_fs_inode_init_once); + if (!xfs_inode_zone) + goto out_destroy_efi_zone; + + xfs_ili_zone = + kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", + KM_ZONE_SPREAD, NULL); + if (!xfs_ili_zone) + goto out_destroy_inode_zone; + + return 0; + + out_destroy_inode_zone: + kmem_zone_destroy(xfs_inode_zone); + out_destroy_efi_zone: + kmem_zone_destroy(xfs_efi_zone); + out_destroy_efd_zone: + kmem_zone_destroy(xfs_efd_zone); + out_destroy_buf_item_zone: + kmem_zone_destroy(xfs_buf_item_zone); + out_destroy_trans_zone: + kmem_zone_destroy(xfs_trans_zone); + out_destroy_ifork_zone: + kmem_zone_destroy(xfs_ifork_zone); + out_destroy_dabuf_zone: + kmem_zone_destroy(xfs_dabuf_zone); + out_destroy_da_state_zone: + kmem_zone_destroy(xfs_da_state_zone); + out_destroy_btree_cur_zone: + kmem_zone_destroy(xfs_btree_cur_zone); + out_destroy_bmap_free_item_zone: + kmem_zone_destroy(xfs_bmap_free_item_zone); + out_destroy_log_ticket_zone: + kmem_zone_destroy(xfs_log_ticket_zone); + out_destroy_ioend_pool: + mempool_destroy(xfs_ioend_pool); + out_destroy_ioend_zone: + kmem_zone_destroy(xfs_ioend_zone); + out: + return -ENOMEM; +} + +STATIC void +xfs_destroy_zones(void) +{ + kmem_zone_destroy(xfs_ili_zone); + kmem_zone_destroy(xfs_inode_zone); + kmem_zone_destroy(xfs_efi_zone); + kmem_zone_destroy(xfs_efd_zone); + kmem_zone_destroy(xfs_buf_item_zone); + kmem_zone_destroy(xfs_trans_zone); + kmem_zone_destroy(xfs_ifork_zone); + kmem_zone_destroy(xfs_dabuf_zone); + kmem_zone_destroy(xfs_da_state_zone); + kmem_zone_destroy(xfs_btree_cur_zone); + kmem_zone_destroy(xfs_bmap_free_item_zone); + kmem_zone_destroy(xfs_log_ticket_zone); + mempool_destroy(xfs_ioend_pool); + kmem_zone_destroy(xfs_ioend_zone); + +} STATIC int __init -init_xfs_fs( void ) +init_xfs_fs(void) { int error; - static char message[] __initdata = KERN_INFO \ - XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n"; - printk(message); + printk(KERN_INFO XFS_VERSION_STRING " with " + XFS_BUILD_OPTIONS " enabled\n"); - ktrace_init(64); + xfs_ioend_init(); + xfs_dir_startup(); error = xfs_init_zones(); - if (error < 0) - goto undo_zones; + if (error) + goto out; + + error = xfs_mru_cache_init(); + if (error) + goto out_destroy_zones; + + error = xfs_filestream_init(); + if (error) + goto out_mru_cache_uninit; error = xfs_buf_init(); - if (error < 0) - goto undo_buffers; + if (error) + goto out_filestream_uninit; + + error = xfs_init_procfs(); + if (error) + goto out_buf_terminate; + + error = xfs_sysctl_register(); + if (error) + goto out_cleanup_procfs; - vn_init(); - xfs_init(); - uuid_init(); vfs_initquota(); error = register_filesystem(&xfs_fs_type); if (error) - goto undo_register; + goto out_sysctl_unregister; return 0; -undo_register: + out_sysctl_unregister: + xfs_sysctl_unregister(); + out_cleanup_procfs: + xfs_cleanup_procfs(); + out_buf_terminate: xfs_buf_terminate(); - -undo_buffers: + out_filestream_uninit: + xfs_filestream_uninit(); + out_mru_cache_uninit: + xfs_mru_cache_uninit(); + out_destroy_zones: xfs_destroy_zones(); - -undo_zones: + out: return error; } STATIC void __exit -exit_xfs_fs( void ) +exit_xfs_fs(void) { vfs_exitquota(); unregister_filesystem(&xfs_fs_type); - xfs_cleanup(); + xfs_sysctl_unregister(); + xfs_cleanup_procfs(); xfs_buf_terminate(); + xfs_filestream_uninit(); + xfs_mru_cache_uninit(); xfs_destroy_zones(); - ktrace_uninit(); } module_init(init_xfs_fs);