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Diffstat (limited to 'fs/xfs/xfs_super.c')
-rw-r--r--fs/xfs/xfs_super.c102
1 files changed, 100 insertions, 2 deletions
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 19e2380fb86..26a09bd7f97 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -88,6 +88,8 @@ mempool_t *xfs_ioend_pool;
* unwritten extent conversion */
#define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
#define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
+#define MNTOPT_32BITINODE "inode32" /* inode allocation limited to
+ * XFS_MAXINUMBER_32 */
#define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
#define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
#define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
@@ -120,12 +122,18 @@ mempool_t *xfs_ioend_pool;
* in the future, too.
*/
enum {
- Opt_barrier, Opt_nobarrier, Opt_err
+ Opt_barrier,
+ Opt_nobarrier,
+ Opt_inode64,
+ Opt_inode32,
+ Opt_err
};
static const match_table_t tokens = {
{Opt_barrier, "barrier"},
{Opt_nobarrier, "nobarrier"},
+ {Opt_inode64, "inode64"},
+ {Opt_inode32, "inode32"},
{Opt_err, NULL}
};
@@ -197,7 +205,9 @@ xfs_parseargs(
*/
mp->m_flags |= XFS_MOUNT_BARRIER;
mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
+#if !XFS_BIG_INUMS
mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
+#endif
/*
* These can be overridden by the mount option parsing.
@@ -294,6 +304,8 @@ xfs_parseargs(
return EINVAL;
}
dswidth = simple_strtoul(value, &eov, 10);
+ } else if (!strcmp(this_char, MNTOPT_32BITINODE)) {
+ mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
} else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
#if !XFS_BIG_INUMS
@@ -492,6 +504,7 @@ xfs_showargs(
{ XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM },
{ XFS_MOUNT_GRPID, "," MNTOPT_GRPID },
{ XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD },
+ { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_32BITINODE },
{ 0, NULL }
};
static struct proc_xfs_info xfs_info_unset[] = {
@@ -591,6 +604,80 @@ xfs_max_file_offset(
return (((__uint64_t)pagefactor) << bitshift) - 1;
}
+xfs_agnumber_t
+xfs_set_inode32(struct xfs_mount *mp)
+{
+ xfs_agnumber_t index = 0;
+ xfs_agnumber_t maxagi = 0;
+ xfs_sb_t *sbp = &mp->m_sb;
+ xfs_agnumber_t max_metadata;
+ xfs_agino_t agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks -1, 0);
+ xfs_ino_t ino = XFS_AGINO_TO_INO(mp, sbp->sb_agcount -1, agino);
+ xfs_perag_t *pag;
+
+ /* Calculate how much should be reserved for inodes to meet
+ * the max inode percentage.
+ */
+ if (mp->m_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 = sbp->sb_agcount;
+ }
+
+ for (index = 0; index < sbp->sb_agcount; index++) {
+ ino = XFS_AGINO_TO_INO(mp, index, agino);
+
+ if (ino > XFS_MAXINUMBER_32) {
+ pag = xfs_perag_get(mp, index);
+ pag->pagi_inodeok = 0;
+ pag->pagf_metadata = 0;
+ xfs_perag_put(pag);
+ continue;
+ }
+
+ pag = xfs_perag_get(mp, index);
+ pag->pagi_inodeok = 1;
+ maxagi++;
+ if (index < max_metadata)
+ pag->pagf_metadata = 1;
+ xfs_perag_put(pag);
+ }
+ mp->m_flags |= (XFS_MOUNT_32BITINODES |
+ XFS_MOUNT_SMALL_INUMS);
+
+ return maxagi;
+}
+
+xfs_agnumber_t
+xfs_set_inode64(struct xfs_mount *mp)
+{
+ xfs_agnumber_t index = 0;
+
+ for (index = 0; index < mp->m_sb.sb_agcount; index++) {
+ struct xfs_perag *pag;
+
+ pag = xfs_perag_get(mp, index);
+ pag->pagi_inodeok = 1;
+ pag->pagf_metadata = 0;
+ xfs_perag_put(pag);
+ }
+
+ /* There is no need for lock protection on m_flags,
+ * the rw_semaphore of the VFS superblock is locked
+ * during mount/umount/remount operations, so this is
+ * enough to avoid concurency on the m_flags field
+ */
+ mp->m_flags &= ~(XFS_MOUNT_32BITINODES |
+ XFS_MOUNT_SMALL_INUMS);
+ return index;
+}
+
STATIC int
xfs_blkdev_get(
xfs_mount_t *mp,
@@ -954,7 +1041,7 @@ xfs_fs_sync_fs(
* We schedule xfssyncd now (now that the disk is
* active) instead of later (when it might not be).
*/
- flush_delayed_work_sync(&mp->m_sync_work);
+ flush_delayed_work(&mp->m_sync_work);
}
return 0;
@@ -1056,6 +1143,12 @@ xfs_fs_remount(
case Opt_nobarrier:
mp->m_flags &= ~XFS_MOUNT_BARRIER;
break;
+ case Opt_inode64:
+ mp->m_maxagi = xfs_set_inode64(mp);
+ break;
+ case Opt_inode32:
+ mp->m_maxagi = xfs_set_inode32(mp);
+ break;
default:
/*
* Logically we would return an error here to prevent
@@ -1506,6 +1599,11 @@ xfs_init_zones(void)
STATIC void
xfs_destroy_zones(void)
{
+ /*
+ * Make sure all delayed rcu free are flushed before we
+ * destroy caches.
+ */
+ rcu_barrier();
kmem_zone_destroy(xfs_ili_zone);
kmem_zone_destroy(xfs_inode_zone);
kmem_zone_destroy(xfs_efi_zone);