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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (c) 2000-2006 Silicon Graphics, Inc.
- * All Rights Reserved.
- */
- #include "xfs.h"
- #include "xfs_shared.h"
- #include "xfs_format.h"
- #include "xfs_log_format.h"
- #include "xfs_trans_resv.h"
- #include "xfs_sb.h"
- #include "xfs_mount.h"
- #include "xfs_inode.h"
- #include "xfs_btree.h"
- #include "xfs_bmap.h"
- #include "xfs_alloc.h"
- #include "xfs_fsops.h"
- #include "xfs_trans.h"
- #include "xfs_buf_item.h"
- #include "xfs_log.h"
- #include "xfs_log_priv.h"
- #include "xfs_dir2.h"
- #include "xfs_extfree_item.h"
- #include "xfs_mru_cache.h"
- #include "xfs_inode_item.h"
- #include "xfs_icache.h"
- #include "xfs_trace.h"
- #include "xfs_icreate_item.h"
- #include "xfs_filestream.h"
- #include "xfs_quota.h"
- #include "xfs_sysfs.h"
- #include "xfs_ondisk.h"
- #include "xfs_rmap_item.h"
- #include "xfs_refcount_item.h"
- #include "xfs_bmap_item.h"
- #include "xfs_reflink.h"
- #include <linux/magic.h>
- #include <linux/fs_context.h>
- #include <linux/fs_parser.h>
- static const struct super_operations xfs_super_operations;
- static struct kset *xfs_kset; /* top-level xfs sysfs dir */
- #ifdef DEBUG
- static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */
- #endif
- enum xfs_dax_mode {
- XFS_DAX_INODE = 0,
- XFS_DAX_ALWAYS = 1,
- XFS_DAX_NEVER = 2,
- };
- static void
- xfs_mount_set_dax_mode(
- struct xfs_mount *mp,
- enum xfs_dax_mode mode)
- {
- switch (mode) {
- case XFS_DAX_INODE:
- mp->m_flags &= ~(XFS_MOUNT_DAX_ALWAYS | XFS_MOUNT_DAX_NEVER);
- break;
- case XFS_DAX_ALWAYS:
- mp->m_flags |= XFS_MOUNT_DAX_ALWAYS;
- mp->m_flags &= ~XFS_MOUNT_DAX_NEVER;
- break;
- case XFS_DAX_NEVER:
- mp->m_flags |= XFS_MOUNT_DAX_NEVER;
- mp->m_flags &= ~XFS_MOUNT_DAX_ALWAYS;
- break;
- }
- }
- static const struct constant_table dax_param_enums[] = {
- {"inode", XFS_DAX_INODE },
- {"always", XFS_DAX_ALWAYS },
- {"never", XFS_DAX_NEVER },
- {}
- };
- /*
- * Table driven mount option parser.
- */
- enum {
- Opt_logbufs, Opt_logbsize, Opt_logdev, Opt_rtdev,
- Opt_wsync, Opt_noalign, Opt_swalloc, Opt_sunit, Opt_swidth, Opt_nouuid,
- Opt_grpid, Opt_nogrpid, Opt_bsdgroups, Opt_sysvgroups,
- Opt_allocsize, Opt_norecovery, Opt_inode64, Opt_inode32, Opt_ikeep,
- Opt_noikeep, Opt_largeio, Opt_nolargeio, Opt_attr2, Opt_noattr2,
- Opt_filestreams, Opt_quota, Opt_noquota, Opt_usrquota, Opt_grpquota,
- Opt_prjquota, Opt_uquota, Opt_gquota, Opt_pquota,
- Opt_uqnoenforce, Opt_gqnoenforce, Opt_pqnoenforce, Opt_qnoenforce,
- Opt_discard, Opt_nodiscard, Opt_dax, Opt_dax_enum,
- };
- static const struct fs_parameter_spec xfs_fs_parameters[] = {
- fsparam_u32("logbufs", Opt_logbufs),
- fsparam_string("logbsize", Opt_logbsize),
- fsparam_string("logdev", Opt_logdev),
- fsparam_string("rtdev", Opt_rtdev),
- fsparam_flag("wsync", Opt_wsync),
- fsparam_flag("noalign", Opt_noalign),
- fsparam_flag("swalloc", Opt_swalloc),
- fsparam_u32("sunit", Opt_sunit),
- fsparam_u32("swidth", Opt_swidth),
- fsparam_flag("nouuid", Opt_nouuid),
- fsparam_flag("grpid", Opt_grpid),
- fsparam_flag("nogrpid", Opt_nogrpid),
- fsparam_flag("bsdgroups", Opt_bsdgroups),
- fsparam_flag("sysvgroups", Opt_sysvgroups),
- fsparam_string("allocsize", Opt_allocsize),
- fsparam_flag("norecovery", Opt_norecovery),
- fsparam_flag("inode64", Opt_inode64),
- fsparam_flag("inode32", Opt_inode32),
- fsparam_flag("ikeep", Opt_ikeep),
- fsparam_flag("noikeep", Opt_noikeep),
- fsparam_flag("largeio", Opt_largeio),
- fsparam_flag("nolargeio", Opt_nolargeio),
- fsparam_flag("attr2", Opt_attr2),
- fsparam_flag("noattr2", Opt_noattr2),
- fsparam_flag("filestreams", Opt_filestreams),
- fsparam_flag("quota", Opt_quota),
- fsparam_flag("noquota", Opt_noquota),
- fsparam_flag("usrquota", Opt_usrquota),
- fsparam_flag("grpquota", Opt_grpquota),
- fsparam_flag("prjquota", Opt_prjquota),
- fsparam_flag("uquota", Opt_uquota),
- fsparam_flag("gquota", Opt_gquota),
- fsparam_flag("pquota", Opt_pquota),
- fsparam_flag("uqnoenforce", Opt_uqnoenforce),
- fsparam_flag("gqnoenforce", Opt_gqnoenforce),
- fsparam_flag("pqnoenforce", Opt_pqnoenforce),
- fsparam_flag("qnoenforce", Opt_qnoenforce),
- fsparam_flag("discard", Opt_discard),
- fsparam_flag("nodiscard", Opt_nodiscard),
- fsparam_flag("dax", Opt_dax),
- fsparam_enum("dax", Opt_dax_enum, dax_param_enums),
- {}
- };
- struct proc_xfs_info {
- uint64_t flag;
- char *str;
- };
- static int
- xfs_fs_show_options(
- struct seq_file *m,
- struct dentry *root)
- {
- static struct proc_xfs_info xfs_info_set[] = {
- /* the few simple ones we can get from the mount struct */
- { XFS_MOUNT_IKEEP, ",ikeep" },
- { XFS_MOUNT_WSYNC, ",wsync" },
- { XFS_MOUNT_NOALIGN, ",noalign" },
- { XFS_MOUNT_SWALLOC, ",swalloc" },
- { XFS_MOUNT_NOUUID, ",nouuid" },
- { XFS_MOUNT_NORECOVERY, ",norecovery" },
- { XFS_MOUNT_ATTR2, ",attr2" },
- { XFS_MOUNT_FILESTREAMS, ",filestreams" },
- { XFS_MOUNT_GRPID, ",grpid" },
- { XFS_MOUNT_DISCARD, ",discard" },
- { XFS_MOUNT_LARGEIO, ",largeio" },
- { XFS_MOUNT_DAX_ALWAYS, ",dax=always" },
- { XFS_MOUNT_DAX_NEVER, ",dax=never" },
- { 0, NULL }
- };
- struct xfs_mount *mp = XFS_M(root->d_sb);
- 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);
- }
- seq_printf(m, ",inode%d",
- (mp->m_flags & XFS_MOUNT_SMALL_INUMS) ? 32 : 64);
- if (mp->m_flags & XFS_MOUNT_ALLOCSIZE)
- seq_printf(m, ",allocsize=%dk",
- (1 << mp->m_allocsize_log) >> 10);
- if (mp->m_logbufs > 0)
- seq_printf(m, ",logbufs=%d", mp->m_logbufs);
- if (mp->m_logbsize > 0)
- seq_printf(m, ",logbsize=%dk", mp->m_logbsize >> 10);
- if (mp->m_logname)
- seq_show_option(m, "logdev", mp->m_logname);
- if (mp->m_rtname)
- seq_show_option(m, "rtdev", mp->m_rtname);
- if (mp->m_dalign > 0)
- seq_printf(m, ",sunit=%d",
- (int)XFS_FSB_TO_BB(mp, mp->m_dalign));
- if (mp->m_swidth > 0)
- seq_printf(m, ",swidth=%d",
- (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
- if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD))
- seq_puts(m, ",usrquota");
- else if (mp->m_qflags & XFS_UQUOTA_ACCT)
- seq_puts(m, ",uqnoenforce");
- if (mp->m_qflags & XFS_PQUOTA_ACCT) {
- if (mp->m_qflags & XFS_PQUOTA_ENFD)
- seq_puts(m, ",prjquota");
- else
- seq_puts(m, ",pqnoenforce");
- }
- if (mp->m_qflags & XFS_GQUOTA_ACCT) {
- if (mp->m_qflags & XFS_GQUOTA_ENFD)
- seq_puts(m, ",grpquota");
- else
- seq_puts(m, ",gqnoenforce");
- }
- if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT))
- seq_puts(m, ",noquota");
- return 0;
- }
- /*
- * Set parameters for inode allocation heuristics, taking into account
- * filesystem size and inode32/inode64 mount options; i.e. specifically
- * whether or not XFS_MOUNT_SMALL_INUMS is set.
- *
- * Inode allocation patterns are altered only if inode32 is requested
- * (XFS_MOUNT_SMALL_INUMS), and the filesystem is sufficiently large.
- * If altered, XFS_MOUNT_32BITINODES is set as well.
- *
- * An agcount independent of that in the mount structure is provided
- * because in the growfs case, mp->m_sb.sb_agcount is not yet updated
- * to the potentially higher ag count.
- *
- * Returns the maximum AG index which may contain inodes.
- */
- xfs_agnumber_t
- xfs_set_inode_alloc(
- struct xfs_mount *mp,
- xfs_agnumber_t agcount)
- {
- xfs_agnumber_t index;
- xfs_agnumber_t maxagi = 0;
- xfs_sb_t *sbp = &mp->m_sb;
- xfs_agnumber_t max_metadata;
- xfs_agino_t agino;
- xfs_ino_t ino;
- /*
- * Calculate how much should be reserved for inodes to meet
- * the max inode percentage. Used only for inode32.
- */
- if (M_IGEO(mp)->maxicount) {
- uint64_t icount;
- icount = sbp->sb_dblocks * sbp->sb_imax_pct;
- do_div(icount, 100);
- icount += sbp->sb_agblocks - 1;
- do_div(icount, sbp->sb_agblocks);
- max_metadata = icount;
- } else {
- max_metadata = agcount;
- }
- /* Get the last possible inode in the filesystem */
- agino = XFS_AGB_TO_AGINO(mp, sbp->sb_agblocks - 1);
- ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino);
- /*
- * If user asked for no more than 32-bit inodes, and the fs is
- * sufficiently large, set XFS_MOUNT_32BITINODES if we must alter
- * the allocator to accommodate the request.
- */
- if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32)
- mp->m_flags |= XFS_MOUNT_32BITINODES;
- else
- mp->m_flags &= ~XFS_MOUNT_32BITINODES;
- for (index = 0; index < agcount; index++) {
- struct xfs_perag *pag;
- ino = XFS_AGINO_TO_INO(mp, index, agino);
- pag = xfs_perag_get(mp, index);
- if (mp->m_flags & XFS_MOUNT_32BITINODES) {
- if (ino > XFS_MAXINUMBER_32) {
- pag->pagi_inodeok = 0;
- pag->pagf_metadata = 0;
- } else {
- pag->pagi_inodeok = 1;
- maxagi++;
- if (index < max_metadata)
- pag->pagf_metadata = 1;
- else
- pag->pagf_metadata = 0;
- }
- } else {
- pag->pagi_inodeok = 1;
- pag->pagf_metadata = 0;
- }
- xfs_perag_put(pag);
- }
- return (mp->m_flags & XFS_MOUNT_32BITINODES) ? maxagi : agcount;
- }
- STATIC int
- xfs_blkdev_get(
- xfs_mount_t *mp,
- const char *name,
- struct block_device **bdevp)
- {
- int error = 0;
- *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL,
- mp);
- if (IS_ERR(*bdevp)) {
- error = PTR_ERR(*bdevp);
- xfs_warn(mp, "Invalid device [%s], error=%d", name, error);
- }
- return error;
- }
- STATIC void
- xfs_blkdev_put(
- struct block_device *bdev)
- {
- if (bdev)
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
- }
- void
- xfs_blkdev_issue_flush(
- xfs_buftarg_t *buftarg)
- {
- blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS);
- }
- STATIC void
- xfs_close_devices(
- struct xfs_mount *mp)
- {
- struct dax_device *dax_ddev = mp->m_ddev_targp->bt_daxdev;
- if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
- struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
- struct dax_device *dax_logdev = mp->m_logdev_targp->bt_daxdev;
- xfs_free_buftarg(mp->m_logdev_targp);
- xfs_blkdev_put(logdev);
- fs_put_dax(dax_logdev);
- }
- if (mp->m_rtdev_targp) {
- struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
- struct dax_device *dax_rtdev = mp->m_rtdev_targp->bt_daxdev;
- xfs_free_buftarg(mp->m_rtdev_targp);
- xfs_blkdev_put(rtdev);
- fs_put_dax(dax_rtdev);
- }
- xfs_free_buftarg(mp->m_ddev_targp);
- fs_put_dax(dax_ddev);
- }
- /*
- * 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 dax_device *dax_ddev = fs_dax_get_by_bdev(ddev);
- struct dax_device *dax_logdev = NULL, *dax_rtdev = NULL;
- 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;
- dax_logdev = fs_dax_get_by_bdev(logdev);
- }
- if (mp->m_rtname) {
- error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev);
- if (error)
- goto out_close_logdev;
- if (rtdev == ddev || rtdev == logdev) {
- xfs_warn(mp,
- "Cannot mount filesystem with identical rtdev and ddev/logdev.");
- error = -EINVAL;
- goto out_close_rtdev;
- }
- dax_rtdev = fs_dax_get_by_bdev(rtdev);
- }
- /*
- * Setup xfs_mount buffer target pointers
- */
- error = -ENOMEM;
- mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, dax_ddev);
- if (!mp->m_ddev_targp)
- goto out_close_rtdev;
- if (rtdev) {
- mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, dax_rtdev);
- if (!mp->m_rtdev_targp)
- goto out_free_ddev_targ;
- }
- if (logdev && logdev != ddev) {
- mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, dax_logdev);
- 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:
- xfs_blkdev_put(rtdev);
- fs_put_dax(dax_rtdev);
- out_close_logdev:
- if (logdev && logdev != ddev) {
- xfs_blkdev_put(logdev);
- fs_put_dax(dax_logdev);
- }
- out:
- fs_put_dax(dax_ddev);
- 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_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,
- log_sector_size);
- if (error)
- return error;
- }
- if (mp->m_rtdev_targp) {
- error = xfs_setsize_buftarg(mp->m_rtdev_targp,
- mp->m_sb.sb_sectsize);
- if (error)
- return error;
- }
- return 0;
- }
- STATIC int
- xfs_init_mount_workqueues(
- struct xfs_mount *mp)
- {
- mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s",
- WQ_MEM_RECLAIM|WQ_FREEZABLE, 1, mp->m_super->s_id);
- if (!mp->m_buf_workqueue)
- goto out;
- mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s",
- WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_super->s_id);
- if (!mp->m_unwritten_workqueue)
- goto out_destroy_buf;
- mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s",
- WQ_MEM_RECLAIM | WQ_FREEZABLE | WQ_UNBOUND,
- 0, mp->m_super->s_id);
- if (!mp->m_cil_workqueue)
- goto out_destroy_unwritten;
- mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s",
- WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_super->s_id);
- if (!mp->m_reclaim_workqueue)
- goto out_destroy_cil;
- mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s",
- WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_super->s_id);
- if (!mp->m_eofblocks_workqueue)
- goto out_destroy_reclaim;
- mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s", WQ_FREEZABLE, 0,
- mp->m_super->s_id);
- if (!mp->m_sync_workqueue)
- goto out_destroy_eofb;
- return 0;
- out_destroy_eofb:
- destroy_workqueue(mp->m_eofblocks_workqueue);
- out_destroy_reclaim:
- destroy_workqueue(mp->m_reclaim_workqueue);
- out_destroy_cil:
- destroy_workqueue(mp->m_cil_workqueue);
- out_destroy_unwritten:
- destroy_workqueue(mp->m_unwritten_workqueue);
- out_destroy_buf:
- destroy_workqueue(mp->m_buf_workqueue);
- out:
- return -ENOMEM;
- }
- STATIC void
- xfs_destroy_mount_workqueues(
- struct xfs_mount *mp)
- {
- destroy_workqueue(mp->m_sync_workqueue);
- destroy_workqueue(mp->m_eofblocks_workqueue);
- destroy_workqueue(mp->m_reclaim_workqueue);
- destroy_workqueue(mp->m_cil_workqueue);
- destroy_workqueue(mp->m_unwritten_workqueue);
- destroy_workqueue(mp->m_buf_workqueue);
- }
- static void
- xfs_flush_inodes_worker(
- struct work_struct *work)
- {
- struct xfs_mount *mp = container_of(work, struct xfs_mount,
- m_flush_inodes_work);
- struct super_block *sb = mp->m_super;
- if (down_read_trylock(&sb->s_umount)) {
- sync_inodes_sb(sb);
- up_read(&sb->s_umount);
- }
- }
- /*
- * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK
- * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting
- * for IO to complete so that we effectively throttle multiple callers to the
- * rate at which IO is completing.
- */
- void
- xfs_flush_inodes(
- struct xfs_mount *mp)
- {
- /*
- * If flush_work() returns true then that means we waited for a flush
- * which was already in progress. Don't bother running another scan.
- */
- if (flush_work(&mp->m_flush_inodes_work))
- return;
- queue_work(mp->m_sync_workqueue, &mp->m_flush_inodes_work);
- flush_work(&mp->m_flush_inodes_work);
- }
- /* Catch misguided souls that try to use this interface on XFS */
- STATIC struct inode *
- xfs_fs_alloc_inode(
- struct super_block *sb)
- {
- BUG();
- return NULL;
- }
- #ifdef DEBUG
- static void
- xfs_check_delalloc(
- struct xfs_inode *ip,
- int whichfork)
- {
- struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork);
- struct xfs_bmbt_irec got;
- struct xfs_iext_cursor icur;
- if (!ifp || !xfs_iext_lookup_extent(ip, ifp, 0, &icur, &got))
- return;
- do {
- if (isnullstartblock(got.br_startblock)) {
- xfs_warn(ip->i_mount,
- "ino %llx %s fork has delalloc extent at [0x%llx:0x%llx]",
- ip->i_ino,
- whichfork == XFS_DATA_FORK ? "data" : "cow",
- got.br_startoff, got.br_blockcount);
- }
- } while (xfs_iext_next_extent(ifp, &icur, &got));
- }
- #else
- #define xfs_check_delalloc(ip, whichfork) do { } while (0)
- #endif
- /*
- * Now that the generic code is guaranteed not to be accessing
- * the linux inode, we can inactivate and reclaim the inode.
- */
- STATIC void
- xfs_fs_destroy_inode(
- struct inode *inode)
- {
- struct xfs_inode *ip = XFS_I(inode);
- trace_xfs_destroy_inode(ip);
- ASSERT(!rwsem_is_locked(&inode->i_rwsem));
- XFS_STATS_INC(ip->i_mount, vn_rele);
- XFS_STATS_INC(ip->i_mount, vn_remove);
- xfs_inactive(ip);
- if (!XFS_FORCED_SHUTDOWN(ip->i_mount) && ip->i_delayed_blks) {
- xfs_check_delalloc(ip, XFS_DATA_FORK);
- xfs_check_delalloc(ip, XFS_COW_FORK);
- ASSERT(0);
- }
- XFS_STATS_INC(ip->i_mount, vn_reclaim);
- /*
- * 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 wait for IO
- * completion to occur before we can reclaim the inode. The background
- * reclaim path handles this more efficiently than we can here, so
- * simply let background reclaim tear down all inodes.
- */
- xfs_inode_set_reclaim_tag(ip);
- }
- static void
- xfs_fs_dirty_inode(
- struct inode *inode,
- int flag)
- {
- struct xfs_inode *ip = XFS_I(inode);
- struct xfs_mount *mp = ip->i_mount;
- struct xfs_trans *tp;
- if (!(inode->i_sb->s_flags & SB_LAZYTIME))
- return;
- if (flag != I_DIRTY_SYNC || !(inode->i_state & I_DIRTY_TIME))
- return;
- if (xfs_trans_alloc(mp, &M_RES(mp)->tr_fsyncts, 0, 0, 0, &tp))
- return;
- xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP);
- xfs_trans_commit(tp);
- }
- /*
- * 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 initialise
- * fields in the xfs inode that left in the initialise state
- * when freeing the inode.
- */
- STATIC void
- xfs_fs_inode_init_once(
- void *inode)
- {
- struct xfs_inode *ip = inode;
- memset(ip, 0, sizeof(struct xfs_inode));
- /* vfs inode */
- inode_init_once(VFS_I(ip));
- /* xfs inode */
- atomic_set(&ip->i_pincount, 0);
- spin_lock_init(&ip->i_flags_lock);
- mrlock_init(&ip->i_mmaplock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
- "xfsino", ip->i_ino);
- mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
- "xfsino", ip->i_ino);
- }
- /*
- * We do an unlocked check for XFS_IDONTCACHE here because we are already
- * serialised against cache hits here via the inode->i_lock and igrab() in
- * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be
- * racing with us, and it avoids needing to grab a spinlock here for every inode
- * we drop the final reference on.
- */
- STATIC int
- xfs_fs_drop_inode(
- struct inode *inode)
- {
- struct xfs_inode *ip = XFS_I(inode);
- /*
- * If this unlinked inode is in the middle of recovery, don't
- * drop the inode just yet; log recovery will take care of
- * that. See the comment for this inode flag.
- */
- if (ip->i_flags & XFS_IRECOVERY) {
- ASSERT(ip->i_mount->m_log->l_flags & XLOG_RECOVERY_NEEDED);
- return 0;
- }
- return generic_drop_inode(inode);
- }
- static void
- xfs_mount_free(
- struct xfs_mount *mp)
- {
- kfree(mp->m_rtname);
- kfree(mp->m_logname);
- kmem_free(mp);
- }
- STATIC int
- xfs_fs_sync_fs(
- struct super_block *sb,
- int wait)
- {
- struct xfs_mount *mp = XFS_M(sb);
- /*
- * Doing anything during the async pass would be counterproductive.
- */
- if (!wait)
- return 0;
- xfs_log_force(mp, XFS_LOG_SYNC);
- if (laptop_mode) {
- /*
- * The disk must be active because we're syncing.
- * We schedule log work now (now that the disk is
- * active) instead of later (when it might not be).
- */
- flush_delayed_work(&mp->m_log->l_work);
- }
- return 0;
- }
- 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;
- struct xfs_inode *ip = XFS_I(d_inode(dentry));
- uint64_t fakeinos, id;
- uint64_t icount;
- uint64_t ifree;
- uint64_t fdblocks;
- xfs_extlen_t lsize;
- int64_t ffree;
- statp->f_type = XFS_SUPER_MAGIC;
- statp->f_namelen = MAXNAMELEN - 1;
- id = huge_encode_dev(mp->m_ddev_targp->bt_dev);
- statp->f_fsid = u64_to_fsid(id);
- icount = percpu_counter_sum(&mp->m_icount);
- ifree = percpu_counter_sum(&mp->m_ifree);
- fdblocks = percpu_counter_sum(&mp->m_fdblocks);
- 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;
- spin_unlock(&mp->m_sb_lock);
- /* make sure statp->f_bfree does not underflow */
- statp->f_bfree = max_t(int64_t, fdblocks - mp->m_alloc_set_aside, 0);
- statp->f_bavail = statp->f_bfree;
- fakeinos = XFS_FSB_TO_INO(mp, statp->f_bfree);
- statp->f_files = min(icount + fakeinos, (uint64_t)XFS_MAXINUMBER);
- if (M_IGEO(mp)->maxicount)
- statp->f_files = min_t(typeof(statp->f_files),
- statp->f_files,
- M_IGEO(mp)->maxicount);
- /* If sb_icount overshot maxicount, report actual allocation */
- statp->f_files = max_t(typeof(statp->f_files),
- statp->f_files,
- sbp->sb_icount);
- /* make sure statp->f_ffree does not underflow */
- ffree = statp->f_files - (icount - ifree);
- statp->f_ffree = max_t(int64_t, ffree, 0);
- if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) &&
- ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) ==
- (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))
- xfs_qm_statvfs(ip, statp);
- if (XFS_IS_REALTIME_MOUNT(mp) &&
- (ip->i_d.di_flags & (XFS_DIFLAG_RTINHERIT | XFS_DIFLAG_REALTIME))) {
- statp->f_blocks = sbp->sb_rblocks;
- statp->f_bavail = statp->f_bfree =
- sbp->sb_frextents * sbp->sb_rextsize;
- }
- return 0;
- }
- STATIC void
- xfs_save_resvblks(struct xfs_mount *mp)
- {
- uint64_t resblks = 0;
- mp->m_resblks_save = mp->m_resblks;
- xfs_reserve_blocks(mp, &resblks, NULL);
- }
- STATIC void
- xfs_restore_resvblks(struct xfs_mount *mp)
- {
- uint64_t resblks;
- if (mp->m_resblks_save) {
- resblks = mp->m_resblks_save;
- mp->m_resblks_save = 0;
- } else
- resblks = xfs_default_resblks(mp);
- xfs_reserve_blocks(mp, &resblks, NULL);
- }
- /*
- * Trigger writeback of all the dirty metadata in the file system.
- *
- * This ensures that the metadata is written to their location on disk rather
- * than just existing in transactions in the log. This means after a quiesce
- * there is no log replay required to write the inodes to disk - this is the
- * primary difference between a sync and a quiesce.
- *
- * We cancel log work early here to ensure all transactions the log worker may
- * run have finished before we clean up and log the superblock and write an
- * unmount record. The unfreeze process is responsible for restarting the log
- * worker correctly.
- */
- void
- xfs_quiesce_attr(
- struct xfs_mount *mp)
- {
- int error = 0;
- cancel_delayed_work_sync(&mp->m_log->l_work);
- /* force the log to unpin objects from the now complete transactions */
- xfs_log_force(mp, XFS_LOG_SYNC);
- /* Push the superblock and write an unmount record */
- error = xfs_log_sbcount(mp);
- if (error)
- xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. "
- "Frozen image may not be consistent.");
- xfs_log_quiesce(mp);
- }
- /*
- * Second stage of a freeze. The data is already frozen so we only
- * need to take care of the metadata. Once that's done sync the superblock
- * to the log to dirty it in case of a crash while frozen. This ensures that we
- * will recover the unlinked inode lists on the next mount.
- */
- STATIC int
- xfs_fs_freeze(
- struct super_block *sb)
- {
- struct xfs_mount *mp = XFS_M(sb);
- unsigned int flags;
- int ret;
- /*
- * The filesystem is now frozen far enough that memory reclaim
- * cannot safely operate on the filesystem. Hence we need to
- * set a GFP_NOFS context here to avoid recursion deadlocks.
- */
- flags = memalloc_nofs_save();
- xfs_stop_block_reaping(mp);
- xfs_save_resvblks(mp);
- xfs_quiesce_attr(mp);
- ret = xfs_sync_sb(mp, true);
- memalloc_nofs_restore(flags);
- return ret;
- }
- STATIC int
- xfs_fs_unfreeze(
- struct super_block *sb)
- {
- struct xfs_mount *mp = XFS_M(sb);
- xfs_restore_resvblks(mp);
- xfs_log_work_queue(mp);
- xfs_start_block_reaping(mp);
- 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 *mp)
- {
- 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) {
- xfs_warn(mp,
- "logbuf size must be greater than or equal to log stripe size");
- return -EINVAL;
- }
- } else {
- /* Fail a mount if the logbuf is larger than 32K */
- if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) {
- xfs_warn(mp,
- "logbuf size for version 1 logs must be 16K or 32K");
- return -EINVAL;
- }
- }
- /*
- * V5 filesystems always use attr2 format for attributes.
- */
- if (xfs_sb_version_hascrc(&mp->m_sb) &&
- (mp->m_flags & XFS_MOUNT_NOATTR2)) {
- xfs_warn(mp, "Cannot mount a V5 filesystem as noattr2. "
- "attr2 is always enabled for V5 filesystems.");
- return -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) &&
- !(mp->m_flags & XFS_MOUNT_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) {
- xfs_warn(mp,
- "cannot mount a read-only filesystem as read-write");
- return -EROFS;
- }
- if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) &&
- (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) &&
- !xfs_sb_version_has_pquotino(&mp->m_sb)) {
- xfs_warn(mp,
- "Super block does not support project and group quota together");
- return -EINVAL;
- }
- return 0;
- }
- static int
- xfs_init_percpu_counters(
- struct xfs_mount *mp)
- {
- int error;
- error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL);
- if (error)
- return -ENOMEM;
- error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL);
- if (error)
- goto free_icount;
- error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL);
- if (error)
- goto free_ifree;
- error = percpu_counter_init(&mp->m_delalloc_blks, 0, GFP_KERNEL);
- if (error)
- goto free_fdblocks;
- return 0;
- free_fdblocks:
- percpu_counter_destroy(&mp->m_fdblocks);
- free_ifree:
- percpu_counter_destroy(&mp->m_ifree);
- free_icount:
- percpu_counter_destroy(&mp->m_icount);
- return -ENOMEM;
- }
- void
- xfs_reinit_percpu_counters(
- struct xfs_mount *mp)
- {
- percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount);
- percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree);
- percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks);
- }
- static void
- xfs_destroy_percpu_counters(
- struct xfs_mount *mp)
- {
- percpu_counter_destroy(&mp->m_icount);
- percpu_counter_destroy(&mp->m_ifree);
- percpu_counter_destroy(&mp->m_fdblocks);
- ASSERT(XFS_FORCED_SHUTDOWN(mp) ||
- percpu_counter_sum(&mp->m_delalloc_blks) == 0);
- percpu_counter_destroy(&mp->m_delalloc_blks);
- }
- static void
- xfs_fs_put_super(
- struct super_block *sb)
- {
- struct xfs_mount *mp = XFS_M(sb);
- /* if ->fill_super failed, we have no mount to tear down */
- if (!sb->s_fs_info)
- return;
- xfs_notice(mp, "Unmounting Filesystem");
- xfs_filestream_unmount(mp);
- xfs_unmountfs(mp);
- xfs_freesb(mp);
- free_percpu(mp->m_stats.xs_stats);
- xfs_destroy_percpu_counters(mp);
- xfs_destroy_mount_workqueues(mp);
- xfs_close_devices(mp);
- sb->s_fs_info = NULL;
- xfs_mount_free(mp);
- }
- static long
- xfs_fs_nr_cached_objects(
- struct super_block *sb,
- struct shrink_control *sc)
- {
- /* Paranoia: catch incorrect calls during mount setup or teardown */
- if (WARN_ON_ONCE(!sb->s_fs_info))
- return 0;
- return xfs_reclaim_inodes_count(XFS_M(sb));
- }
- static long
- xfs_fs_free_cached_objects(
- struct super_block *sb,
- struct shrink_control *sc)
- {
- return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan);
- }
- 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,
- .drop_inode = xfs_fs_drop_inode,
- .put_super = xfs_fs_put_super,
- .sync_fs = xfs_fs_sync_fs,
- .freeze_fs = xfs_fs_freeze,
- .unfreeze_fs = xfs_fs_unfreeze,
- .statfs = xfs_fs_statfs,
- .show_options = xfs_fs_show_options,
- .nr_cached_objects = xfs_fs_nr_cached_objects,
- .free_cached_objects = xfs_fs_free_cached_objects,
- };
- static int
- suffix_kstrtoint(
- const char *s,
- unsigned int base,
- int *res)
- {
- int last, shift_left_factor = 0, _res;
- char *value;
- int ret = 0;
- value = kstrdup(s, GFP_KERNEL);
- if (!value)
- return -ENOMEM;
- 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';
- }
- if (kstrtoint(value, base, &_res))
- ret = -EINVAL;
- kfree(value);
- *res = _res << shift_left_factor;
- return ret;
- }
- /*
- * Set mount state from a mount option.
- *
- * NOTE: mp->m_super is NULL here!
- */
- static int
- xfs_fc_parse_param(
- struct fs_context *fc,
- struct fs_parameter *param)
- {
- struct xfs_mount *mp = fc->s_fs_info;
- struct fs_parse_result result;
- int size = 0;
- int opt;
- opt = fs_parse(fc, xfs_fs_parameters, param, &result);
- if (opt < 0)
- return opt;
- switch (opt) {
- case Opt_logbufs:
- mp->m_logbufs = result.uint_32;
- return 0;
- case Opt_logbsize:
- if (suffix_kstrtoint(param->string, 10, &mp->m_logbsize))
- return -EINVAL;
- return 0;
- case Opt_logdev:
- kfree(mp->m_logname);
- mp->m_logname = kstrdup(param->string, GFP_KERNEL);
- if (!mp->m_logname)
- return -ENOMEM;
- return 0;
- case Opt_rtdev:
- kfree(mp->m_rtname);
- mp->m_rtname = kstrdup(param->string, GFP_KERNEL);
- if (!mp->m_rtname)
- return -ENOMEM;
- return 0;
- case Opt_allocsize:
- if (suffix_kstrtoint(param->string, 10, &size))
- return -EINVAL;
- mp->m_allocsize_log = ffs(size) - 1;
- mp->m_flags |= XFS_MOUNT_ALLOCSIZE;
- return 0;
- case Opt_grpid:
- case Opt_bsdgroups:
- mp->m_flags |= XFS_MOUNT_GRPID;
- return 0;
- case Opt_nogrpid:
- case Opt_sysvgroups:
- mp->m_flags &= ~XFS_MOUNT_GRPID;
- return 0;
- case Opt_wsync:
- mp->m_flags |= XFS_MOUNT_WSYNC;
- return 0;
- case Opt_norecovery:
- mp->m_flags |= XFS_MOUNT_NORECOVERY;
- return 0;
- case Opt_noalign:
- mp->m_flags |= XFS_MOUNT_NOALIGN;
- return 0;
- case Opt_swalloc:
- mp->m_flags |= XFS_MOUNT_SWALLOC;
- return 0;
- case Opt_sunit:
- mp->m_dalign = result.uint_32;
- return 0;
- case Opt_swidth:
- mp->m_swidth = result.uint_32;
- return 0;
- case Opt_inode32:
- mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
- return 0;
- case Opt_inode64:
- mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
- return 0;
- case Opt_nouuid:
- mp->m_flags |= XFS_MOUNT_NOUUID;
- return 0;
- case Opt_largeio:
- mp->m_flags |= XFS_MOUNT_LARGEIO;
- return 0;
- case Opt_nolargeio:
- mp->m_flags &= ~XFS_MOUNT_LARGEIO;
- return 0;
- case Opt_filestreams:
- mp->m_flags |= XFS_MOUNT_FILESTREAMS;
- return 0;
- case Opt_noquota:
- mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
- mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
- mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
- return 0;
- case Opt_quota:
- case Opt_uquota:
- case Opt_usrquota:
- mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
- XFS_UQUOTA_ENFD);
- return 0;
- case Opt_qnoenforce:
- case Opt_uqnoenforce:
- mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
- mp->m_qflags &= ~XFS_UQUOTA_ENFD;
- return 0;
- case Opt_pquota:
- case Opt_prjquota:
- mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
- XFS_PQUOTA_ENFD);
- return 0;
- case Opt_pqnoenforce:
- mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
- mp->m_qflags &= ~XFS_PQUOTA_ENFD;
- return 0;
- case Opt_gquota:
- case Opt_grpquota:
- mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
- XFS_GQUOTA_ENFD);
- return 0;
- case Opt_gqnoenforce:
- mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
- mp->m_qflags &= ~XFS_GQUOTA_ENFD;
- return 0;
- case Opt_discard:
- mp->m_flags |= XFS_MOUNT_DISCARD;
- return 0;
- case Opt_nodiscard:
- mp->m_flags &= ~XFS_MOUNT_DISCARD;
- return 0;
- #ifdef CONFIG_FS_DAX
- case Opt_dax:
- xfs_mount_set_dax_mode(mp, XFS_DAX_ALWAYS);
- return 0;
- case Opt_dax_enum:
- xfs_mount_set_dax_mode(mp, result.uint_32);
- return 0;
- #endif
- /* Following mount options will be removed in September 2025 */
- case Opt_ikeep:
- xfs_warn(mp, "%s mount option is deprecated.", param->key);
- mp->m_flags |= XFS_MOUNT_IKEEP;
- return 0;
- case Opt_noikeep:
- xfs_warn(mp, "%s mount option is deprecated.", param->key);
- mp->m_flags &= ~XFS_MOUNT_IKEEP;
- return 0;
- case Opt_attr2:
- xfs_warn(mp, "%s mount option is deprecated.", param->key);
- mp->m_flags |= XFS_MOUNT_ATTR2;
- return 0;
- case Opt_noattr2:
- xfs_warn(mp, "%s mount option is deprecated.", param->key);
- mp->m_flags &= ~XFS_MOUNT_ATTR2;
- mp->m_flags |= XFS_MOUNT_NOATTR2;
- return 0;
- default:
- xfs_warn(mp, "unknown mount option [%s].", param->key);
- return -EINVAL;
- }
- return 0;
- }
- static int
- xfs_fc_validate_params(
- struct xfs_mount *mp)
- {
- /*
- * no recovery flag requires a read-only mount
- */
- if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
- !(mp->m_flags & XFS_MOUNT_RDONLY)) {
- xfs_warn(mp, "no-recovery mounts must be read-only.");
- return -EINVAL;
- }
- if ((mp->m_flags & XFS_MOUNT_NOALIGN) &&
- (mp->m_dalign || mp->m_swidth)) {
- xfs_warn(mp,
- "sunit and swidth options incompatible with the noalign option");
- return -EINVAL;
- }
- if (!IS_ENABLED(CONFIG_XFS_QUOTA) && mp->m_qflags != 0) {
- xfs_warn(mp, "quota support not available in this kernel.");
- return -EINVAL;
- }
- if ((mp->m_dalign && !mp->m_swidth) ||
- (!mp->m_dalign && mp->m_swidth)) {
- xfs_warn(mp, "sunit and swidth must be specified together");
- return -EINVAL;
- }
- if (mp->m_dalign && (mp->m_swidth % mp->m_dalign != 0)) {
- xfs_warn(mp,
- "stripe width (%d) must be a multiple of the stripe unit (%d)",
- mp->m_swidth, mp->m_dalign);
- return -EINVAL;
- }
- if (mp->m_logbufs != -1 &&
- mp->m_logbufs != 0 &&
- (mp->m_logbufs < XLOG_MIN_ICLOGS ||
- mp->m_logbufs > XLOG_MAX_ICLOGS)) {
- xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
- mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
- return -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))) {
- xfs_warn(mp,
- "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
- mp->m_logbsize);
- return -EINVAL;
- }
- if ((mp->m_flags & XFS_MOUNT_ALLOCSIZE) &&
- (mp->m_allocsize_log > XFS_MAX_IO_LOG ||
- mp->m_allocsize_log < XFS_MIN_IO_LOG)) {
- xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
- mp->m_allocsize_log, XFS_MIN_IO_LOG, XFS_MAX_IO_LOG);
- return -EINVAL;
- }
- return 0;
- }
- static int
- xfs_fc_fill_super(
- struct super_block *sb,
- struct fs_context *fc)
- {
- struct xfs_mount *mp = sb->s_fs_info;
- struct inode *root;
- int flags = 0, error;
- mp->m_super = sb;
- error = xfs_fc_validate_params(mp);
- if (error)
- goto out_free_names;
- 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;
- sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
- #endif
- sb->s_op = &xfs_super_operations;
- /*
- * Delay mount work if the debug hook is set. This is debug
- * instrumention to coordinate simulation of xfs mount failures with
- * VFS superblock operations
- */
- if (xfs_globals.mount_delay) {
- xfs_notice(mp, "Delaying mount for %d seconds.",
- xfs_globals.mount_delay);
- msleep(xfs_globals.mount_delay * 1000);
- }
- if (fc->sb_flags & SB_SILENT)
- flags |= XFS_MFSI_QUIET;
- error = xfs_open_devices(mp);
- if (error)
- goto out_free_names;
- error = xfs_init_mount_workqueues(mp);
- if (error)
- goto out_close_devices;
- error = xfs_init_percpu_counters(mp);
- if (error)
- goto out_destroy_workqueues;
- /* Allocate stats memory before we do operations that might use it */
- mp->m_stats.xs_stats = alloc_percpu(struct xfsstats);
- if (!mp->m_stats.xs_stats) {
- error = -ENOMEM;
- goto out_destroy_counters;
- }
- error = xfs_readsb(mp, flags);
- if (error)
- goto out_free_stats;
- error = xfs_finish_flags(mp);
- if (error)
- goto out_free_sb;
- error = xfs_setup_devices(mp);
- if (error)
- goto out_free_sb;
- /* V4 support is undergoing deprecation. */
- if (!xfs_sb_version_hascrc(&mp->m_sb)) {
- #ifdef CONFIG_XFS_SUPPORT_V4
- xfs_warn_once(mp,
- "Deprecated V4 format (crc=0) will not be supported after September 2030.");
- #else
- xfs_warn(mp,
- "Deprecated V4 format (crc=0) not supported by kernel.");
- error = -EINVAL;
- goto out_free_sb;
- #endif
- }
- /*
- * XFS block mappings use 54 bits to store the logical block offset.
- * This should suffice to handle the maximum file size that the VFS
- * supports (currently 2^63 bytes on 64-bit and ULONG_MAX << PAGE_SHIFT
- * bytes on 32-bit), but as XFS and VFS have gotten the s_maxbytes
- * calculation wrong on 32-bit kernels in the past, we'll add a WARN_ON
- * to check this assertion.
- *
- * Avoid integer overflow by comparing the maximum bmbt offset to the
- * maximum pagecache offset in units of fs blocks.
- */
- if (XFS_B_TO_FSBT(mp, MAX_LFS_FILESIZE) > XFS_MAX_FILEOFF) {
- xfs_warn(mp,
- "MAX_LFS_FILESIZE block offset (%llu) exceeds extent map maximum (%llu)!",
- XFS_B_TO_FSBT(mp, MAX_LFS_FILESIZE),
- XFS_MAX_FILEOFF);
- error = -EINVAL;
- goto out_free_sb;
- }
- error = xfs_filestream_mount(mp);
- if (error)
- goto out_free_sb;
- /*
- * we must configure the block size in the superblock before we run the
- * full mount process as the mount process can lookup and cache inodes.
- */
- sb->s_magic = XFS_SUPER_MAGIC;
- sb->s_blocksize = mp->m_sb.sb_blocksize;
- sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1;
- sb->s_maxbytes = MAX_LFS_FILESIZE;
- sb->s_max_links = XFS_MAXLINK;
- sb->s_time_gran = 1;
- if (xfs_sb_version_hasbigtime(&mp->m_sb)) {
- sb->s_time_min = xfs_bigtime_to_unix(XFS_BIGTIME_TIME_MIN);
- sb->s_time_max = xfs_bigtime_to_unix(XFS_BIGTIME_TIME_MAX);
- } else {
- sb->s_time_min = XFS_LEGACY_TIME_MIN;
- sb->s_time_max = XFS_LEGACY_TIME_MAX;
- }
- trace_xfs_inode_timestamp_range(mp, sb->s_time_min, sb->s_time_max);
- sb->s_iflags |= SB_I_CGROUPWB;
- set_posix_acl_flag(sb);
- /* version 5 superblocks support inode version counters. */
- if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5)
- sb->s_flags |= SB_I_VERSION;
- if (xfs_sb_version_hasbigtime(&mp->m_sb))
- xfs_warn(mp,
- "EXPERIMENTAL big timestamp feature in use. Use at your own risk!");
- if (mp->m_flags & XFS_MOUNT_DAX_ALWAYS) {
- bool rtdev_is_dax = false, datadev_is_dax;
- xfs_warn(mp,
- "DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
- datadev_is_dax = bdev_dax_supported(mp->m_ddev_targp->bt_bdev,
- sb->s_blocksize);
- if (mp->m_rtdev_targp)
- rtdev_is_dax = bdev_dax_supported(
- mp->m_rtdev_targp->bt_bdev, sb->s_blocksize);
- if (!rtdev_is_dax && !datadev_is_dax) {
- xfs_alert(mp,
- "DAX unsupported by block device. Turning off DAX.");
- xfs_mount_set_dax_mode(mp, XFS_DAX_NEVER);
- }
- if (xfs_sb_version_hasreflink(&mp->m_sb)) {
- xfs_alert(mp,
- "DAX and reflink cannot be used together!");
- error = -EINVAL;
- goto out_filestream_unmount;
- }
- }
- if (mp->m_flags & XFS_MOUNT_DISCARD) {
- struct request_queue *q = bdev_get_queue(sb->s_bdev);
- if (!blk_queue_discard(q)) {
- xfs_warn(mp, "mounting with \"discard\" option, but "
- "the device does not support discard");
- mp->m_flags &= ~XFS_MOUNT_DISCARD;
- }
- }
- if (xfs_sb_version_hasreflink(&mp->m_sb)) {
- if (mp->m_sb.sb_rblocks) {
- xfs_alert(mp,
- "reflink not compatible with realtime device!");
- error = -EINVAL;
- goto out_filestream_unmount;
- }
- if (xfs_globals.always_cow) {
- xfs_info(mp, "using DEBUG-only always_cow mode.");
- mp->m_always_cow = true;
- }
- }
- if (xfs_sb_version_hasrmapbt(&mp->m_sb) && mp->m_sb.sb_rblocks) {
- xfs_alert(mp,
- "reverse mapping btree not compatible with realtime device!");
- error = -EINVAL;
- goto out_filestream_unmount;
- }
- if (xfs_sb_version_hasinobtcounts(&mp->m_sb))
- xfs_warn(mp,
- "EXPERIMENTAL inode btree counters feature in use. Use at your own risk!");
- error = xfs_mountfs(mp);
- if (error)
- goto out_filestream_unmount;
- root = igrab(VFS_I(mp->m_rootip));
- if (!root) {
- error = -ENOENT;
- goto out_unmount;
- }
- sb->s_root = d_make_root(root);
- if (!sb->s_root) {
- error = -ENOMEM;
- goto out_unmount;
- }
- return 0;
- out_filestream_unmount:
- xfs_filestream_unmount(mp);
- out_free_sb:
- xfs_freesb(mp);
- out_free_stats:
- free_percpu(mp->m_stats.xs_stats);
- out_destroy_counters:
- xfs_destroy_percpu_counters(mp);
- out_destroy_workqueues:
- xfs_destroy_mount_workqueues(mp);
- out_close_devices:
- xfs_close_devices(mp);
- out_free_names:
- sb->s_fs_info = NULL;
- xfs_mount_free(mp);
- return error;
- out_unmount:
- xfs_filestream_unmount(mp);
- xfs_unmountfs(mp);
- goto out_free_sb;
- }
- static int
- xfs_fc_get_tree(
- struct fs_context *fc)
- {
- return get_tree_bdev(fc, xfs_fc_fill_super);
- }
- static int
- xfs_remount_rw(
- struct xfs_mount *mp)
- {
- struct xfs_sb *sbp = &mp->m_sb;
- int error;
- if (mp->m_flags & XFS_MOUNT_NORECOVERY) {
- xfs_warn(mp,
- "ro->rw transition prohibited on norecovery mount");
- return -EINVAL;
- }
- if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
- xfs_sb_has_ro_compat_feature(sbp, XFS_SB_FEAT_RO_COMPAT_UNKNOWN)) {
- xfs_warn(mp,
- "ro->rw transition prohibited on unknown (0x%x) ro-compat filesystem",
- (sbp->sb_features_ro_compat &
- XFS_SB_FEAT_RO_COMPAT_UNKNOWN));
- return -EINVAL;
- }
- mp->m_flags &= ~XFS_MOUNT_RDONLY;
- /*
- * If this is the first remount to writeable state we might have some
- * superblock changes to update.
- */
- if (mp->m_update_sb) {
- error = xfs_sync_sb(mp, false);
- if (error) {
- xfs_warn(mp, "failed to write sb changes");
- return error;
- }
- mp->m_update_sb = false;
- }
- /*
- * Fill out the reserve pool if it is empty. Use the stashed value if
- * it is non-zero, otherwise go with the default.
- */
- xfs_restore_resvblks(mp);
- xfs_log_work_queue(mp);
- /* Recover any CoW blocks that never got remapped. */
- error = xfs_reflink_recover_cow(mp);
- if (error) {
- xfs_err(mp,
- "Error %d recovering leftover CoW allocations.", error);
- xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
- return error;
- }
- xfs_start_block_reaping(mp);
- /* Create the per-AG metadata reservation pool .*/
- error = xfs_fs_reserve_ag_blocks(mp);
- if (error && error != -ENOSPC)
- return error;
- return 0;
- }
- static int
- xfs_remount_ro(
- struct xfs_mount *mp)
- {
- int error;
- /*
- * Cancel background eofb scanning so it cannot race with the final
- * log force+buftarg wait and deadlock the remount.
- */
- xfs_stop_block_reaping(mp);
- /* Get rid of any leftover CoW reservations... */
- error = xfs_icache_free_cowblocks(mp, NULL);
- if (error) {
- xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
- return error;
- }
- /* Free the per-AG metadata reservation pool. */
- error = xfs_fs_unreserve_ag_blocks(mp);
- if (error) {
- xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
- return error;
- }
- /*
- * Before we sync the metadata, we need to free up the reserve block
- * pool so that the used block count in the superblock on disk is
- * correct at the end of the remount. Stash the current* reserve pool
- * size so that if we get remounted rw, we can return it to the same
- * size.
- */
- xfs_save_resvblks(mp);
- xfs_quiesce_attr(mp);
- mp->m_flags |= XFS_MOUNT_RDONLY;
- return 0;
- }
- /*
- * 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.
- */
- static int
- xfs_fc_reconfigure(
- struct fs_context *fc)
- {
- struct xfs_mount *mp = XFS_M(fc->root->d_sb);
- struct xfs_mount *new_mp = fc->s_fs_info;
- xfs_sb_t *sbp = &mp->m_sb;
- int flags = fc->sb_flags;
- int error;
- /* version 5 superblocks always support version counters. */
- if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5)
- fc->sb_flags |= SB_I_VERSION;
- error = xfs_fc_validate_params(new_mp);
- if (error)
- return error;
- sync_filesystem(mp->m_super);
- /* inode32 -> inode64 */
- if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) &&
- !(new_mp->m_flags & XFS_MOUNT_SMALL_INUMS)) {
- mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
- mp->m_maxagi = xfs_set_inode_alloc(mp, sbp->sb_agcount);
- }
- /* inode64 -> inode32 */
- if (!(mp->m_flags & XFS_MOUNT_SMALL_INUMS) &&
- (new_mp->m_flags & XFS_MOUNT_SMALL_INUMS)) {
- mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
- mp->m_maxagi = xfs_set_inode_alloc(mp, sbp->sb_agcount);
- }
- /* ro -> rw */
- if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(flags & SB_RDONLY)) {
- error = xfs_remount_rw(mp);
- if (error)
- return error;
- }
- /* rw -> ro */
- if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (flags & SB_RDONLY)) {
- error = xfs_remount_ro(mp);
- if (error)
- return error;
- }
- return 0;
- }
- static void xfs_fc_free(
- struct fs_context *fc)
- {
- struct xfs_mount *mp = fc->s_fs_info;
- /*
- * mp is stored in the fs_context when it is initialized.
- * mp is transferred to the superblock on a successful mount,
- * but if an error occurs before the transfer we have to free
- * it here.
- */
- if (mp)
- xfs_mount_free(mp);
- }
- static const struct fs_context_operations xfs_context_ops = {
- .parse_param = xfs_fc_parse_param,
- .get_tree = xfs_fc_get_tree,
- .reconfigure = xfs_fc_reconfigure,
- .free = xfs_fc_free,
- };
- static int xfs_init_fs_context(
- struct fs_context *fc)
- {
- struct xfs_mount *mp;
- mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO);
- if (!mp)
- return -ENOMEM;
- spin_lock_init(&mp->m_sb_lock);
- spin_lock_init(&mp->m_agirotor_lock);
- INIT_RADIX_TREE(&mp->m_perag_tree, GFP_ATOMIC);
- spin_lock_init(&mp->m_perag_lock);
- mutex_init(&mp->m_growlock);
- INIT_WORK(&mp->m_flush_inodes_work, xfs_flush_inodes_worker);
- INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker);
- INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker);
- INIT_DELAYED_WORK(&mp->m_cowblocks_work, xfs_cowblocks_worker);
- mp->m_kobj.kobject.kset = xfs_kset;
- /*
- * We don't create the finobt per-ag space reservation until after log
- * recovery, so we must set this to true so that an ifree transaction
- * started during log recovery will not depend on space reservations
- * for finobt expansion.
- */
- mp->m_finobt_nores = true;
- /*
- * These can be overridden by the mount option parsing.
- */
- mp->m_logbufs = -1;
- mp->m_logbsize = -1;
- mp->m_allocsize_log = 16; /* 64k */
- /*
- * Copy binary VFS mount flags we are interested in.
- */
- if (fc->sb_flags & SB_RDONLY)
- mp->m_flags |= XFS_MOUNT_RDONLY;
- if (fc->sb_flags & SB_DIRSYNC)
- mp->m_flags |= XFS_MOUNT_DIRSYNC;
- if (fc->sb_flags & SB_SYNCHRONOUS)
- mp->m_flags |= XFS_MOUNT_WSYNC;
- fc->s_fs_info = mp;
- fc->ops = &xfs_context_ops;
- return 0;
- }
- static struct file_system_type xfs_fs_type = {
- .owner = THIS_MODULE,
- .name = "xfs",
- .init_fs_context = xfs_init_fs_context,
- .parameters = xfs_fs_parameters,
- .kill_sb = kill_block_super,
- .fs_flags = FS_REQUIRES_DEV,
- };
- MODULE_ALIAS_FS("xfs");
- STATIC int __init
- xfs_init_zones(void)
- {
- xfs_log_ticket_zone = kmem_cache_create("xfs_log_ticket",
- sizeof(struct xlog_ticket),
- 0, 0, NULL);
- if (!xfs_log_ticket_zone)
- goto out;
- xfs_bmap_free_item_zone = kmem_cache_create("xfs_bmap_free_item",
- sizeof(struct xfs_extent_free_item),
- 0, 0, NULL);
- if (!xfs_bmap_free_item_zone)
- goto out_destroy_log_ticket_zone;
- xfs_btree_cur_zone = kmem_cache_create("xfs_btree_cur",
- sizeof(struct xfs_btree_cur),
- 0, 0, NULL);
- if (!xfs_btree_cur_zone)
- goto out_destroy_bmap_free_item_zone;
- xfs_da_state_zone = kmem_cache_create("xfs_da_state",
- sizeof(struct xfs_da_state),
- 0, 0, NULL);
- if (!xfs_da_state_zone)
- goto out_destroy_btree_cur_zone;
- xfs_ifork_zone = kmem_cache_create("xfs_ifork",
- sizeof(struct xfs_ifork),
- 0, 0, NULL);
- if (!xfs_ifork_zone)
- goto out_destroy_da_state_zone;
- xfs_trans_zone = kmem_cache_create("xf_trans",
- sizeof(struct xfs_trans),
- 0, 0, NULL);
- 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_cache_create("xfs_buf_item",
- sizeof(struct xfs_buf_log_item),
- 0, 0, NULL);
- if (!xfs_buf_item_zone)
- goto out_destroy_trans_zone;
- xfs_efd_zone = kmem_cache_create("xfs_efd_item",
- (sizeof(struct xfs_efd_log_item) +
- (XFS_EFD_MAX_FAST_EXTENTS - 1) *
- sizeof(struct xfs_extent)),
- 0, 0, NULL);
- if (!xfs_efd_zone)
- goto out_destroy_buf_item_zone;
- xfs_efi_zone = kmem_cache_create("xfs_efi_item",
- (sizeof(struct xfs_efi_log_item) +
- (XFS_EFI_MAX_FAST_EXTENTS - 1) *
- sizeof(struct xfs_extent)),
- 0, 0, NULL);
- if (!xfs_efi_zone)
- goto out_destroy_efd_zone;
- xfs_inode_zone = kmem_cache_create("xfs_inode",
- sizeof(struct xfs_inode), 0,
- (SLAB_HWCACHE_ALIGN |
- SLAB_RECLAIM_ACCOUNT |
- SLAB_MEM_SPREAD | SLAB_ACCOUNT),
- xfs_fs_inode_init_once);
- if (!xfs_inode_zone)
- goto out_destroy_efi_zone;
- xfs_ili_zone = kmem_cache_create("xfs_ili",
- sizeof(struct xfs_inode_log_item), 0,
- SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD,
- NULL);
- if (!xfs_ili_zone)
- goto out_destroy_inode_zone;
- xfs_icreate_zone = kmem_cache_create("xfs_icr",
- sizeof(struct xfs_icreate_item),
- 0, 0, NULL);
- if (!xfs_icreate_zone)
- goto out_destroy_ili_zone;
- xfs_rud_zone = kmem_cache_create("xfs_rud_item",
- sizeof(struct xfs_rud_log_item),
- 0, 0, NULL);
- if (!xfs_rud_zone)
- goto out_destroy_icreate_zone;
- xfs_rui_zone = kmem_cache_create("xfs_rui_item",
- xfs_rui_log_item_sizeof(XFS_RUI_MAX_FAST_EXTENTS),
- 0, 0, NULL);
- if (!xfs_rui_zone)
- goto out_destroy_rud_zone;
- xfs_cud_zone = kmem_cache_create("xfs_cud_item",
- sizeof(struct xfs_cud_log_item),
- 0, 0, NULL);
- if (!xfs_cud_zone)
- goto out_destroy_rui_zone;
- xfs_cui_zone = kmem_cache_create("xfs_cui_item",
- xfs_cui_log_item_sizeof(XFS_CUI_MAX_FAST_EXTENTS),
- 0, 0, NULL);
- if (!xfs_cui_zone)
- goto out_destroy_cud_zone;
- xfs_bud_zone = kmem_cache_create("xfs_bud_item",
- sizeof(struct xfs_bud_log_item),
- 0, 0, NULL);
- if (!xfs_bud_zone)
- goto out_destroy_cui_zone;
- xfs_bui_zone = kmem_cache_create("xfs_bui_item",
- xfs_bui_log_item_sizeof(XFS_BUI_MAX_FAST_EXTENTS),
- 0, 0, NULL);
- if (!xfs_bui_zone)
- goto out_destroy_bud_zone;
- return 0;
- out_destroy_bud_zone:
- kmem_cache_destroy(xfs_bud_zone);
- out_destroy_cui_zone:
- kmem_cache_destroy(xfs_cui_zone);
- out_destroy_cud_zone:
- kmem_cache_destroy(xfs_cud_zone);
- out_destroy_rui_zone:
- kmem_cache_destroy(xfs_rui_zone);
- out_destroy_rud_zone:
- kmem_cache_destroy(xfs_rud_zone);
- out_destroy_icreate_zone:
- kmem_cache_destroy(xfs_icreate_zone);
- out_destroy_ili_zone:
- kmem_cache_destroy(xfs_ili_zone);
- out_destroy_inode_zone:
- kmem_cache_destroy(xfs_inode_zone);
- out_destroy_efi_zone:
- kmem_cache_destroy(xfs_efi_zone);
- out_destroy_efd_zone:
- kmem_cache_destroy(xfs_efd_zone);
- out_destroy_buf_item_zone:
- kmem_cache_destroy(xfs_buf_item_zone);
- out_destroy_trans_zone:
- kmem_cache_destroy(xfs_trans_zone);
- out_destroy_ifork_zone:
- kmem_cache_destroy(xfs_ifork_zone);
- out_destroy_da_state_zone:
- kmem_cache_destroy(xfs_da_state_zone);
- out_destroy_btree_cur_zone:
- kmem_cache_destroy(xfs_btree_cur_zone);
- out_destroy_bmap_free_item_zone:
- kmem_cache_destroy(xfs_bmap_free_item_zone);
- out_destroy_log_ticket_zone:
- kmem_cache_destroy(xfs_log_ticket_zone);
- out:
- return -ENOMEM;
- }
- STATIC void
- xfs_destroy_zones(void)
- {
- /*
- * Make sure all delayed rcu free are flushed before we
- * destroy caches.
- */
- rcu_barrier();
- kmem_cache_destroy(xfs_bui_zone);
- kmem_cache_destroy(xfs_bud_zone);
- kmem_cache_destroy(xfs_cui_zone);
- kmem_cache_destroy(xfs_cud_zone);
- kmem_cache_destroy(xfs_rui_zone);
- kmem_cache_destroy(xfs_rud_zone);
- kmem_cache_destroy(xfs_icreate_zone);
- kmem_cache_destroy(xfs_ili_zone);
- kmem_cache_destroy(xfs_inode_zone);
- kmem_cache_destroy(xfs_efi_zone);
- kmem_cache_destroy(xfs_efd_zone);
- kmem_cache_destroy(xfs_buf_item_zone);
- kmem_cache_destroy(xfs_trans_zone);
- kmem_cache_destroy(xfs_ifork_zone);
- kmem_cache_destroy(xfs_da_state_zone);
- kmem_cache_destroy(xfs_btree_cur_zone);
- kmem_cache_destroy(xfs_bmap_free_item_zone);
- kmem_cache_destroy(xfs_log_ticket_zone);
- }
- STATIC int __init
- xfs_init_workqueues(void)
- {
- /*
- * The allocation workqueue can be used in memory reclaim situations
- * (writepage path), and parallelism is only limited by the number of
- * AGs in all the filesystems mounted. Hence use the default large
- * max_active value for this workqueue.
- */
- xfs_alloc_wq = alloc_workqueue("xfsalloc",
- WQ_MEM_RECLAIM|WQ_FREEZABLE, 0);
- if (!xfs_alloc_wq)
- return -ENOMEM;
- xfs_discard_wq = alloc_workqueue("xfsdiscard", WQ_UNBOUND, 0);
- if (!xfs_discard_wq)
- goto out_free_alloc_wq;
- return 0;
- out_free_alloc_wq:
- destroy_workqueue(xfs_alloc_wq);
- return -ENOMEM;
- }
- STATIC void
- xfs_destroy_workqueues(void)
- {
- destroy_workqueue(xfs_discard_wq);
- destroy_workqueue(xfs_alloc_wq);
- }
- STATIC int __init
- init_xfs_fs(void)
- {
- int error;
- xfs_check_ondisk_structs();
- printk(KERN_INFO XFS_VERSION_STRING " with "
- XFS_BUILD_OPTIONS " enabled\n");
- xfs_dir_startup();
- error = xfs_init_zones();
- if (error)
- goto out;
- error = xfs_init_workqueues();
- if (error)
- goto out_destroy_zones;
- error = xfs_mru_cache_init();
- if (error)
- goto out_destroy_wq;
- error = xfs_buf_init();
- if (error)
- goto out_mru_cache_uninit;
- error = xfs_init_procfs();
- if (error)
- goto out_buf_terminate;
- error = xfs_sysctl_register();
- if (error)
- goto out_cleanup_procfs;
- xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj);
- if (!xfs_kset) {
- error = -ENOMEM;
- goto out_sysctl_unregister;
- }
- xfsstats.xs_kobj.kobject.kset = xfs_kset;
- xfsstats.xs_stats = alloc_percpu(struct xfsstats);
- if (!xfsstats.xs_stats) {
- error = -ENOMEM;
- goto out_kset_unregister;
- }
- error = xfs_sysfs_init(&xfsstats.xs_kobj, &xfs_stats_ktype, NULL,
- "stats");
- if (error)
- goto out_free_stats;
- #ifdef DEBUG
- xfs_dbg_kobj.kobject.kset = xfs_kset;
- error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug");
- if (error)
- goto out_remove_stats_kobj;
- #endif
- error = xfs_qm_init();
- if (error)
- goto out_remove_dbg_kobj;
- error = register_filesystem(&xfs_fs_type);
- if (error)
- goto out_qm_exit;
- return 0;
- out_qm_exit:
- xfs_qm_exit();
- out_remove_dbg_kobj:
- #ifdef DEBUG
- xfs_sysfs_del(&xfs_dbg_kobj);
- out_remove_stats_kobj:
- #endif
- xfs_sysfs_del(&xfsstats.xs_kobj);
- out_free_stats:
- free_percpu(xfsstats.xs_stats);
- out_kset_unregister:
- kset_unregister(xfs_kset);
- out_sysctl_unregister:
- xfs_sysctl_unregister();
- out_cleanup_procfs:
- xfs_cleanup_procfs();
- out_buf_terminate:
- xfs_buf_terminate();
- out_mru_cache_uninit:
- xfs_mru_cache_uninit();
- out_destroy_wq:
- xfs_destroy_workqueues();
- out_destroy_zones:
- xfs_destroy_zones();
- out:
- return error;
- }
- STATIC void __exit
- exit_xfs_fs(void)
- {
- xfs_qm_exit();
- unregister_filesystem(&xfs_fs_type);
- #ifdef DEBUG
- xfs_sysfs_del(&xfs_dbg_kobj);
- #endif
- xfs_sysfs_del(&xfsstats.xs_kobj);
- free_percpu(xfsstats.xs_stats);
- kset_unregister(xfs_kset);
- xfs_sysctl_unregister();
- xfs_cleanup_procfs();
- xfs_buf_terminate();
- xfs_mru_cache_uninit();
- xfs_destroy_workqueues();
- xfs_destroy_zones();
- xfs_uuid_table_free();
- }
- 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");
- MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);
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