#include "xfs_fsops.h"
#include "xfs_utils.h"
-STATIC int xfs_mount_log_sb(xfs_mount_t *, __int64_t);
-STATIC int xfs_uuid_mount(xfs_mount_t *);
STATIC void xfs_unmountfs_wait(xfs_mount_t *);
{ sizeof(xfs_sb_t), 0 }
};
+static DEFINE_MUTEX(xfs_uuid_table_mutex);
+static int xfs_uuid_table_size;
+static uuid_t *xfs_uuid_table;
+
+/*
+ * See if the UUID is unique among mounted XFS filesystems.
+ * Mount fails if UUID is nil or a FS with the same UUID is already mounted.
+ */
+STATIC int
+xfs_uuid_mount(
+ struct xfs_mount *mp)
+{
+ uuid_t *uuid = &mp->m_sb.sb_uuid;
+ int hole, i;
+
+ if (mp->m_flags & XFS_MOUNT_NOUUID)
+ return 0;
+
+ if (uuid_is_nil(uuid)) {
+ cmn_err(CE_WARN,
+ "XFS: Filesystem %s has nil UUID - can't mount",
+ mp->m_fsname);
+ return XFS_ERROR(EINVAL);
+ }
+
+ mutex_lock(&xfs_uuid_table_mutex);
+ for (i = 0, hole = -1; i < xfs_uuid_table_size; i++) {
+ if (uuid_is_nil(&xfs_uuid_table[i])) {
+ hole = i;
+ continue;
+ }
+ if (uuid_equal(uuid, &xfs_uuid_table[i]))
+ goto out_duplicate;
+ }
+
+ if (hole < 0) {
+ xfs_uuid_table = kmem_realloc(xfs_uuid_table,
+ (xfs_uuid_table_size + 1) * sizeof(*xfs_uuid_table),
+ xfs_uuid_table_size * sizeof(*xfs_uuid_table),
+ KM_SLEEP);
+ hole = xfs_uuid_table_size++;
+ }
+ xfs_uuid_table[hole] = *uuid;
+ mutex_unlock(&xfs_uuid_table_mutex);
+
+ return 0;
+
+ out_duplicate:
+ mutex_unlock(&xfs_uuid_table_mutex);
+ cmn_err(CE_WARN, "XFS: Filesystem %s has duplicate UUID - can't mount",
+ mp->m_fsname);
+ return XFS_ERROR(EINVAL);
+}
+
+STATIC void
+xfs_uuid_unmount(
+ struct xfs_mount *mp)
+{
+ uuid_t *uuid = &mp->m_sb.sb_uuid;
+ int i;
+
+ if (mp->m_flags & XFS_MOUNT_NOUUID)
+ return;
+
+ mutex_lock(&xfs_uuid_table_mutex);
+ for (i = 0; i < xfs_uuid_table_size; i++) {
+ if (uuid_is_nil(&xfs_uuid_table[i]))
+ continue;
+ if (!uuid_equal(uuid, &xfs_uuid_table[i]))
+ continue;
+ memset(&xfs_uuid_table[i], 0, sizeof(uuid_t));
+ break;
+ }
+ ASSERT(i < xfs_uuid_table_size);
+ mutex_unlock(&xfs_uuid_table_mutex);
+}
+
+
/*
* Free up the resources associated with a mount structure. Assume that
* the structure was initially zeroed, so we can tell which fields got
sbp->sb_sectsize > XFS_MAX_SECTORSIZE ||
sbp->sb_sectlog < XFS_MIN_SECTORSIZE_LOG ||
sbp->sb_sectlog > XFS_MAX_SECTORSIZE_LOG ||
+ sbp->sb_sectsize != (1 << sbp->sb_sectlog) ||
sbp->sb_blocksize < XFS_MIN_BLOCKSIZE ||
sbp->sb_blocksize > XFS_MAX_BLOCKSIZE ||
sbp->sb_blocklog < XFS_MIN_BLOCKSIZE_LOG ||
sbp->sb_blocklog > XFS_MAX_BLOCKSIZE_LOG ||
+ sbp->sb_blocksize != (1 << sbp->sb_blocklog) ||
sbp->sb_inodesize < XFS_DINODE_MIN_SIZE ||
sbp->sb_inodesize > XFS_DINODE_MAX_SIZE ||
sbp->sb_inodelog < XFS_DINODE_MIN_LOG ||
sbp->sb_inodelog > XFS_DINODE_MAX_LOG ||
+ sbp->sb_inodesize != (1 << sbp->sb_inodelog) ||
(sbp->sb_blocklog - sbp->sb_inodelog != sbp->sb_inopblog) ||
(sbp->sb_rextsize * sbp->sb_blocksize > XFS_MAX_RTEXTSIZE) ||
(sbp->sb_rextsize * sbp->sb_blocksize < XFS_MIN_RTEXTSIZE) ||
return XFS_ERROR(ENOSYS);
}
+ /*
+ * Currently only very few inode sizes are supported.
+ */
+ switch (sbp->sb_inodesize) {
+ case 256:
+ case 512:
+ case 1024:
+ case 2048:
+ break;
+ default:
+ xfs_fs_mount_cmn_err(flags,
+ "inode size of %d bytes not supported",
+ sbp->sb_inodesize);
+ return XFS_ERROR(ENOSYS);
+ }
+
if (xfs_sb_validate_fsb_count(sbp, sbp->sb_dblocks) ||
xfs_sb_validate_fsb_count(sbp, sbp->sb_rblocks)) {
xfs_fs_mount_cmn_err(flags,
STATIC void
xfs_mount_common(xfs_mount_t *mp, xfs_sb_t *sbp)
{
- int i;
-
mp->m_agfrotor = mp->m_agirotor = 0;
spin_lock_init(&mp->m_agirotor_lock);
mp->m_maxagi = mp->m_sb.sb_agcount;
mp->m_sectbb_log = sbp->sb_sectlog - BBSHIFT;
mp->m_agno_log = xfs_highbit32(sbp->sb_agcount - 1) + 1;
mp->m_agino_log = sbp->sb_inopblog + sbp->sb_agblklog;
- mp->m_litino = sbp->sb_inodesize -
- ((uint)sizeof(xfs_dinode_core_t) + (uint)sizeof(xfs_agino_t));
mp->m_blockmask = sbp->sb_blocksize - 1;
mp->m_blockwsize = sbp->sb_blocksize >> XFS_WORDLOG;
mp->m_blockwmask = mp->m_blockwsize - 1;
- INIT_LIST_HEAD(&mp->m_del_inodes);
- /*
- * Setup for attributes, in case they get created.
- * This value is for inodes getting attributes for the first time,
- * the per-inode value is for old attribute values.
- */
- ASSERT(sbp->sb_inodesize >= 256 && sbp->sb_inodesize <= 2048);
- switch (sbp->sb_inodesize) {
- case 256:
- mp->m_attroffset = XFS_LITINO(mp) -
- XFS_BMDR_SPACE_CALC(MINABTPTRS);
- break;
- case 512:
- case 1024:
- case 2048:
- mp->m_attroffset = XFS_BMDR_SPACE_CALC(6 * MINABTPTRS);
- break;
- default:
- ASSERT(0);
- }
- ASSERT(mp->m_attroffset < XFS_LITINO(mp));
+ mp->m_alloc_mxr[0] = xfs_allocbt_maxrecs(mp, sbp->sb_blocksize, 1);
+ mp->m_alloc_mxr[1] = xfs_allocbt_maxrecs(mp, sbp->sb_blocksize, 0);
+ mp->m_alloc_mnr[0] = mp->m_alloc_mxr[0] / 2;
+ mp->m_alloc_mnr[1] = mp->m_alloc_mxr[1] / 2;
- for (i = 0; i < 2; i++) {
- mp->m_alloc_mxr[i] = XFS_BTREE_BLOCK_MAXRECS(sbp->sb_blocksize,
- xfs_alloc, i == 0);
- mp->m_alloc_mnr[i] = XFS_BTREE_BLOCK_MINRECS(sbp->sb_blocksize,
- xfs_alloc, i == 0);
- }
- for (i = 0; i < 2; i++) {
- mp->m_bmap_dmxr[i] = XFS_BTREE_BLOCK_MAXRECS(sbp->sb_blocksize,
- xfs_bmbt, i == 0);
- mp->m_bmap_dmnr[i] = XFS_BTREE_BLOCK_MINRECS(sbp->sb_blocksize,
- xfs_bmbt, i == 0);
- }
- for (i = 0; i < 2; i++) {
- mp->m_inobt_mxr[i] = XFS_BTREE_BLOCK_MAXRECS(sbp->sb_blocksize,
- xfs_inobt, i == 0);
- mp->m_inobt_mnr[i] = XFS_BTREE_BLOCK_MINRECS(sbp->sb_blocksize,
- xfs_inobt, i == 0);
- }
+ mp->m_inobt_mxr[0] = xfs_inobt_maxrecs(mp, sbp->sb_blocksize, 1);
+ mp->m_inobt_mxr[1] = xfs_inobt_maxrecs(mp, sbp->sb_blocksize, 0);
+ mp->m_inobt_mnr[0] = mp->m_inobt_mxr[0] / 2;
+ mp->m_inobt_mnr[1] = mp->m_inobt_mxr[1] / 2;
+
+ mp->m_bmap_dmxr[0] = xfs_bmbt_maxrecs(mp, sbp->sb_blocksize, 1);
+ mp->m_bmap_dmxr[1] = xfs_bmbt_maxrecs(mp, sbp->sb_blocksize, 0);
+ mp->m_bmap_dmnr[0] = mp->m_bmap_dmxr[0] / 2;
+ mp->m_bmap_dmnr[1] = mp->m_bmap_dmxr[1] / 2;
mp->m_bsize = XFS_FSB_TO_BB(mp, 1);
mp->m_ialloc_inos = (int)MAX((__uint16_t)XFS_INODES_PER_CHUNK,
for (index = 0; index < agcount; index++) {
/*
* read the agf, then the agi. This gets us
- * all the inforamtion we need and populates the
+ * all the information we need and populates the
* per-ag structures for us.
*/
error = xfs_alloc_pagf_init(mp, NULL, index, 0);
* Update alignment values based on mount options and sb values
*/
STATIC int
-xfs_update_alignment(xfs_mount_t *mp, __uint64_t *update_flags)
+xfs_update_alignment(xfs_mount_t *mp)
{
xfs_sb_t *sbp = &(mp->m_sb);
if (xfs_sb_version_hasdalign(sbp)) {
if (sbp->sb_unit != mp->m_dalign) {
sbp->sb_unit = mp->m_dalign;
- *update_flags |= XFS_SB_UNIT;
+ mp->m_update_flags |= XFS_SB_UNIT;
}
if (sbp->sb_width != mp->m_swidth) {
sbp->sb_width = mp->m_swidth;
- *update_flags |= XFS_SB_WIDTH;
+ mp->m_update_flags |= XFS_SB_WIDTH;
}
}
} else if ((mp->m_flags & XFS_MOUNT_NOALIGN) != XFS_MOUNT_NOALIGN &&
}
/*
- * xfs_mountfs
- *
+ * Clear the quotaflags in memory and in the superblock.
+ */
+int
+xfs_mount_reset_sbqflags(
+ struct xfs_mount *mp)
+{
+ int error;
+ struct xfs_trans *tp;
+
+ mp->m_qflags = 0;
+
+ /*
+ * It is OK to look at sb_qflags here in mount path,
+ * without m_sb_lock.
+ */
+ if (mp->m_sb.sb_qflags == 0)
+ return 0;
+ spin_lock(&mp->m_sb_lock);
+ mp->m_sb.sb_qflags = 0;
+ spin_unlock(&mp->m_sb_lock);
+
+ /*
+ * If the fs is readonly, let the incore superblock run
+ * with quotas off but don't flush the update out to disk
+ */
+ if (mp->m_flags & XFS_MOUNT_RDONLY)
+ return 0;
+
+#ifdef QUOTADEBUG
+ xfs_fs_cmn_err(CE_NOTE, mp, "Writing superblock quota changes");
+#endif
+
+ tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE);
+ error = xfs_trans_reserve(tp, 0, mp->m_sb.sb_sectsize + 128, 0, 0,
+ XFS_DEFAULT_LOG_COUNT);
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ xfs_fs_cmn_err(CE_ALERT, mp,
+ "xfs_mount_reset_sbqflags: Superblock update failed!");
+ return error;
+ }
+
+ xfs_mod_sb(tp, XFS_SB_QFLAGS);
+ return xfs_trans_commit(tp, 0);
+}
+
+/*
* This function does the following on an initial mount of a file system:
* - reads the superblock from disk and init the mount struct
* - if we're a 32-bit kernel, do a size check on the superblock
xfs_sb_t *sbp = &(mp->m_sb);
xfs_inode_t *rip;
__uint64_t resblks;
- __int64_t update_flags = 0LL;
- uint quotamount, quotaflags;
- int uuid_mounted = 0;
+ uint quotamount = 0;
+ uint quotaflags = 0;
int error = 0;
xfs_mount_common(mp, sbp);
"XFS: correcting sb_features alignment problem");
sbp->sb_features2 |= sbp->sb_bad_features2;
sbp->sb_bad_features2 = sbp->sb_features2;
- update_flags |= XFS_SB_FEATURES2 | XFS_SB_BAD_FEATURES2;
+ mp->m_update_flags |= XFS_SB_FEATURES2 | XFS_SB_BAD_FEATURES2;
/*
* Re-check for ATTR2 in case it was found in bad_features2
if (xfs_sb_version_hasattr2(&mp->m_sb) &&
(mp->m_flags & XFS_MOUNT_NOATTR2)) {
xfs_sb_version_removeattr2(&mp->m_sb);
- update_flags |= XFS_SB_FEATURES2;
+ mp->m_update_flags |= XFS_SB_FEATURES2;
/* update sb_versionnum for the clearing of the morebits */
if (!sbp->sb_features2)
- update_flags |= XFS_SB_VERSIONNUM;
+ mp->m_update_flags |= XFS_SB_VERSIONNUM;
}
/*
* allocator alignment is within an ag, therefore ag has
* to be aligned at stripe boundary.
*/
- error = xfs_update_alignment(mp, &update_flags);
+ error = xfs_update_alignment(mp);
if (error)
- goto error1;
+ goto out;
xfs_alloc_compute_maxlevels(mp);
xfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK);
mp->m_maxioffset = xfs_max_file_offset(sbp->sb_blocklog);
- /*
- * XFS uses the uuid from the superblock as the unique
- * identifier for fsid. We can not use the uuid from the volume
- * since a single partition filesystem is identical to a single
- * partition volume/filesystem.
- */
- if ((mp->m_flags & XFS_MOUNT_NOUUID) == 0) {
- if (xfs_uuid_mount(mp)) {
- error = XFS_ERROR(EINVAL);
- goto error1;
- }
- uuid_mounted=1;
- }
+ error = xfs_uuid_mount(mp);
+ if (error)
+ goto out;
/*
* Set the minimum read and write sizes
*/
error = xfs_check_sizes(mp);
if (error)
- goto error1;
+ goto out_remove_uuid;
/*
* Initialize realtime fields in the mount structure
error = xfs_rtmount_init(mp);
if (error) {
cmn_err(CE_WARN, "XFS: RT mount failed");
- goto error1;
+ goto out_remove_uuid;
}
/*
mp->m_perag = kmem_zalloc(sbp->sb_agcount * sizeof(xfs_perag_t),
KM_MAYFAIL);
if (!mp->m_perag)
- goto error1;
+ goto out_remove_uuid;
mp->m_maxagi = xfs_initialize_perag(mp, sbp->sb_agcount);
+ if (!sbp->sb_logblocks) {
+ cmn_err(CE_WARN, "XFS: no log defined");
+ XFS_ERROR_REPORT("xfs_mountfs", XFS_ERRLEVEL_LOW, mp);
+ error = XFS_ERROR(EFSCORRUPTED);
+ goto out_free_perag;
+ }
+
/*
* log's mount-time initialization. Perform 1st part recovery if needed
*/
- if (likely(sbp->sb_logblocks > 0)) { /* check for volume case */
- error = xfs_log_mount(mp, mp->m_logdev_targp,
- XFS_FSB_TO_DADDR(mp, sbp->sb_logstart),
- XFS_FSB_TO_BB(mp, sbp->sb_logblocks));
- if (error) {
- cmn_err(CE_WARN, "XFS: log mount failed");
- goto error2;
- }
- } else { /* No log has been defined */
- cmn_err(CE_WARN, "XFS: no log defined");
- XFS_ERROR_REPORT("xfs_mountfs_int(1)", XFS_ERRLEVEL_LOW, mp);
- error = XFS_ERROR(EFSCORRUPTED);
- goto error2;
+ error = xfs_log_mount(mp, mp->m_logdev_targp,
+ XFS_FSB_TO_DADDR(mp, sbp->sb_logstart),
+ XFS_FSB_TO_BB(mp, sbp->sb_logblocks));
+ if (error) {
+ cmn_err(CE_WARN, "XFS: log mount failed");
+ goto out_free_perag;
}
/*
* If we are currently making the filesystem, the initialisation will
* fail as the perag data is in an undefined state.
*/
-
if (xfs_sb_version_haslazysbcount(&mp->m_sb) &&
!XFS_LAST_UNMOUNT_WAS_CLEAN(mp) &&
!mp->m_sb.sb_inprogress) {
error = xfs_initialize_perag_data(mp, sbp->sb_agcount);
- if (error) {
- goto error2;
- }
+ if (error)
+ goto out_free_perag;
}
+
/*
* Get and sanity-check the root inode.
* Save the pointer to it in the mount structure.
error = xfs_iget(mp, NULL, sbp->sb_rootino, 0, XFS_ILOCK_EXCL, &rip, 0);
if (error) {
cmn_err(CE_WARN, "XFS: failed to read root inode");
- goto error3;
+ goto out_log_dealloc;
}
ASSERT(rip != NULL);
XFS_ERROR_REPORT("xfs_mountfs_int(2)", XFS_ERRLEVEL_LOW,
mp);
error = XFS_ERROR(EFSCORRUPTED);
- goto error4;
+ goto out_rele_rip;
}
mp->m_rootip = rip; /* save it */
* Free up the root inode.
*/
cmn_err(CE_WARN, "XFS: failed to read RT inodes");
- goto error4;
+ goto out_rele_rip;
}
/*
- * If fs is not mounted readonly, then update the superblock changes.
+ * If this is a read-only mount defer the superblock updates until
+ * the next remount into writeable mode. Otherwise we would never
+ * perform the update e.g. for the root filesystem.
*/
- if (update_flags && !(mp->m_flags & XFS_MOUNT_RDONLY)) {
- error = xfs_mount_log_sb(mp, update_flags);
+ if (mp->m_update_flags && !(mp->m_flags & XFS_MOUNT_RDONLY)) {
+ error = xfs_mount_log_sb(mp, mp->m_update_flags);
if (error) {
cmn_err(CE_WARN, "XFS: failed to write sb changes");
- goto error4;
+ goto out_rtunmount;
}
}
/*
* Initialise the XFS quota management subsystem for this mount
*/
- error = XFS_QM_INIT(mp, "amount, "aflags);
- if (error)
- goto error4;
+ if (XFS_IS_QUOTA_RUNNING(mp)) {
+ error = xfs_qm_newmount(mp, "amount, "aflags);
+ if (error)
+ goto out_rtunmount;
+ } else {
+ ASSERT(!XFS_IS_QUOTA_ON(mp));
+
+ /*
+ * If a file system had quotas running earlier, but decided to
+ * mount without -o uquota/pquota/gquota options, revoke the
+ * quotachecked license.
+ */
+ if (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT) {
+ cmn_err(CE_NOTE,
+ "XFS: resetting qflags for filesystem %s",
+ mp->m_fsname);
+
+ error = xfs_mount_reset_sbqflags(mp);
+ if (error)
+ return error;
+ }
+ }
/*
* Finish recovering the file system. This part needed to be
error = xfs_log_mount_finish(mp);
if (error) {
cmn_err(CE_WARN, "XFS: log mount finish failed");
- goto error4;
+ goto out_rtunmount;
}
/*
* Complete the quota initialisation, post-log-replay component.
*/
- error = XFS_QM_MOUNT(mp, quotamount, quotaflags);
- if (error)
- goto error4;
+ if (quotamount) {
+ ASSERT(mp->m_qflags == 0);
+ mp->m_qflags = quotaflags;
+
+ xfs_qm_mount_quotas(mp);
+ }
+
+#if defined(DEBUG) && defined(XFS_LOUD_RECOVERY)
+ if (XFS_IS_QUOTA_ON(mp))
+ xfs_fs_cmn_err(CE_NOTE, mp, "Disk quotas turned on");
+ else
+ xfs_fs_cmn_err(CE_NOTE, mp, "Disk quotas not turned on");
+#endif
/*
* Now we are mounted, reserve a small amount of unused space for
return 0;
- error4:
- /*
- * Free up the root inode.
- */
+ out_rtunmount:
+ xfs_rtunmount_inodes(mp);
+ out_rele_rip:
IRELE(rip);
- error3:
- xfs_log_unmount_dealloc(mp);
- error2:
+ out_log_dealloc:
+ xfs_log_unmount(mp);
+ out_free_perag:
xfs_free_perag(mp);
- error1:
- if (uuid_mounted)
- uuid_table_remove(&mp->m_sb.sb_uuid);
+ out_remove_uuid:
+ xfs_uuid_unmount(mp);
+ out:
return error;
}
__uint64_t resblks;
int error;
+ xfs_qm_unmount_quotas(mp);
+ xfs_rtunmount_inodes(mp);
IRELE(mp->m_rootip);
/*
* We can potentially deadlock here if we have an inode cluster
- * that has been freed has it's buffer still pinned in memory because
+ * that has been freed has its buffer still pinned in memory because
* the transaction is still sitting in a iclog. The stale inodes
* on that buffer will have their flush locks held until the
* transaction hits the disk and the callbacks run. the inode
* need to force the log first.
*/
xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
- xfs_iflush_all(mp);
+ xfs_reclaim_inodes(mp, XFS_IFLUSH_ASYNC);
- XFS_QM_DQPURGEALL(mp, XFS_QMOPT_QUOTALL | XFS_QMOPT_UMOUNTING);
+ xfs_qm_unmount(mp);
/*
* Flush out the log synchronously so that we know for sure
* Unreserve any blocks we have so that when we unmount we don't account
* the reserved free space as used. This is really only necessary for
* lazy superblock counting because it trusts the incore superblock
- * counters to be aboslutely correct on clean unmount.
+ * counters to be absolutely correct on clean unmount.
*
* We don't bother correcting this elsewhere for lazy superblock
* counting because on mount of an unclean filesystem we reconstruct the
"Freespace may not be correct on next mount.");
xfs_unmountfs_writesb(mp);
xfs_unmountfs_wait(mp); /* wait for async bufs */
- xfs_log_unmount(mp); /* Done! No more fs ops. */
-
- /*
- * All inodes from this mount point should be freed.
- */
- ASSERT(mp->m_inodes == NULL);
-
- if ((mp->m_flags & XFS_MOUNT_NOUUID) == 0)
- uuid_table_remove(&mp->m_sb.sb_uuid);
+ xfs_log_unmount_write(mp);
+ xfs_log_unmount(mp);
+ xfs_uuid_unmount(mp);
#if defined(DEBUG)
xfs_errortag_clearall(mp, 0);
#endif
xfs_free_perag(mp);
- if (mp->m_quotainfo)
- XFS_QM_DONE(mp);
}
STATIC void
return error;
}
-STATIC void
-xfs_mark_shared_ro(
- xfs_mount_t *mp,
- xfs_buf_t *bp)
-{
- xfs_dsb_t *sb = XFS_BUF_TO_SBP(bp);
- __uint16_t version;
-
- if (!(sb->sb_flags & XFS_SBF_READONLY))
- sb->sb_flags |= XFS_SBF_READONLY;
-
- version = be16_to_cpu(sb->sb_versionnum);
- if ((version & XFS_SB_VERSION_NUMBITS) != XFS_SB_VERSION_4 ||
- !(version & XFS_SB_VERSION_SHAREDBIT))
- version |= XFS_SB_VERSION_SHAREDBIT;
- sb->sb_versionnum = cpu_to_be16(version);
-}
-
int
xfs_unmountfs_writesb(xfs_mount_t *mp)
{
sbp = xfs_getsb(mp, 0);
- /*
- * mark shared-readonly if desired
- */
- if (mp->m_mk_sharedro)
- xfs_mark_shared_ro(mp, sbp);
-
XFS_BUF_UNDONE(sbp);
XFS_BUF_UNREAD(sbp);
XFS_BUF_UNDELAYWRITE(sbp);
if (error)
xfs_ioerror_alert("xfs_unmountfs_writesb",
mp, sbp, XFS_BUF_ADDR(sbp));
- if (error && mp->m_mk_sharedro)
- xfs_fs_cmn_err(CE_ALERT, mp, "Superblock write error detected while unmounting. Filesystem may not be marked shared readonly");
xfs_buf_relse(sbp);
}
return error;
}
/*
- * See if the UUID is unique among mounted XFS filesystems.
- * Mount fails if UUID is nil or a FS with the same UUID is already mounted.
- */
-STATIC int
-xfs_uuid_mount(
- xfs_mount_t *mp)
-{
- if (uuid_is_nil(&mp->m_sb.sb_uuid)) {
- cmn_err(CE_WARN,
- "XFS: Filesystem %s has nil UUID - can't mount",
- mp->m_fsname);
- return -1;
- }
- if (!uuid_table_insert(&mp->m_sb.sb_uuid)) {
- cmn_err(CE_WARN,
- "XFS: Filesystem %s has duplicate UUID - can't mount",
- mp->m_fsname);
- return -1;
- }
- return 0;
-}
-
-/*
* Used to log changes to the superblock unit and width fields which could
* be altered by the mount options, as well as any potential sb_features2
* fixup. Only the first superblock is updated.
*/
-STATIC int
+int
xfs_mount_log_sb(
xfs_mount_t *mp,
__int64_t fields)
* we disable the per-cpu counter and go through the slow path.
*
* The slow path is the current xfs_mod_incore_sb() function. This means that
- * when we disable a per-cpu counter, we need to drain it's resources back to
+ * when we disable a per-cpu counter, we need to drain its resources back to
* the global superblock. We do this after disabling the counter to prevent
* more threads from queueing up on the counter.
*
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff