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authorEric Sandeen <sandeen@redhat.com>2014-07-24 20:51:54 +1000
committerDave Chinner <david@fromorbit.com>2014-07-24 20:51:54 +1000
commit9de67c3ba9ea961ba420573d56479d09d33a7587 (patch)
treed173aa82969c02f0b8d275e9618d170652e0afa1 /fs/xfs/xfs_super.c
parenteb866bbf095ec68552c0583199208858618498e3 (diff)
downloadop-kernel-dev-9de67c3ba9ea961ba420573d56479d09d33a7587.zip
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xfs: allow inode allocations in post-growfs disk space
Today, if we perform an xfs_growfs which adds allocation groups, mp->m_maxagi is not properly updated when the growfs is complete. Therefore inodes will continue to be allocated only in the AGs which existed prior to the growfs, and the new space won't be utilized. This is because of this path in xfs_growfs_data_private(): xfs_growfs_data_private xfs_initialize_perag(mp, nagcount, &nagimax); if (mp->m_flags & XFS_MOUNT_32BITINODES) index = xfs_set_inode32(mp); else index = xfs_set_inode64(mp); if (maxagi) *maxagi = index; where xfs_set_inode* iterates over the (old) agcount in mp->m_sb.sb_agblocks, which has not yet been updated in the growfs path. So "index" will be returned based on the old agcount, not the new one, and new AGs are not available for inode allocation. Fix this by explicitly passing the proper AG count (which xfs_initialize_perag() already has) down another level, so that xfs_set_inode* can make the proper decision about acceptable AGs for inode allocation in the potentially newly-added AGs. This has been broken since 3.7, when these two xfs_set_inode* functions were added in commit 2d2194f. Prior to that, we looped over "agcount" not sb_agblocks in these calculations. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_super.c')
-rw-r--r--fs/xfs/xfs_super.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index f2e5f8a..b475eb6 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -597,8 +597,13 @@ xfs_max_file_offset(
return (((__uint64_t)pagefactor) << bitshift) - 1;
}
+/*
+ * xfs_set_inode32() and xfs_set_inode64() are passed an agcount
+ * because in the growfs case, mp->m_sb.sb_agcount is not updated
+ * yet to the potentially higher ag count.
+ */
xfs_agnumber_t
-xfs_set_inode32(struct xfs_mount *mp)
+xfs_set_inode32(struct xfs_mount *mp, xfs_agnumber_t agcount)
{
xfs_agnumber_t index = 0;
xfs_agnumber_t maxagi = 0;
@@ -620,10 +625,10 @@ xfs_set_inode32(struct xfs_mount *mp)
do_div(icount, sbp->sb_agblocks);
max_metadata = icount;
} else {
- max_metadata = sbp->sb_agcount;
+ max_metadata = agcount;
}
- for (index = 0; index < sbp->sb_agcount; index++) {
+ for (index = 0; index < agcount; index++) {
ino = XFS_AGINO_TO_INO(mp, index, agino);
if (ino > XFS_MAXINUMBER_32) {
@@ -648,11 +653,11 @@ xfs_set_inode32(struct xfs_mount *mp)
}
xfs_agnumber_t
-xfs_set_inode64(struct xfs_mount *mp)
+xfs_set_inode64(struct xfs_mount *mp, xfs_agnumber_t agcount)
{
xfs_agnumber_t index = 0;
- for (index = 0; index < mp->m_sb.sb_agcount; index++) {
+ for (index = 0; index < agcount; index++) {
struct xfs_perag *pag;
pag = xfs_perag_get(mp, index);
@@ -1188,6 +1193,7 @@ xfs_fs_remount(
char *options)
{
struct xfs_mount *mp = XFS_M(sb);
+ xfs_sb_t *sbp = &mp->m_sb;
substring_t args[MAX_OPT_ARGS];
char *p;
int error;
@@ -1208,10 +1214,10 @@ xfs_fs_remount(
mp->m_flags &= ~XFS_MOUNT_BARRIER;
break;
case Opt_inode64:
- mp->m_maxagi = xfs_set_inode64(mp);
+ mp->m_maxagi = xfs_set_inode64(mp, sbp->sb_agcount);
break;
case Opt_inode32:
- mp->m_maxagi = xfs_set_inode32(mp);
+ mp->m_maxagi = xfs_set_inode32(mp, sbp->sb_agcount);
break;
default:
/*
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