diff options
| -rw-r--r-- | fs/xfs/xfs_fsops.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_mount.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_mount.h | 15 |
3 files changed, 17 insertions, 2 deletions
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index 33e26690a8c4..710e857bb825 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -434,7 +434,7 @@ xfs_reserve_blocks( error = -ENOSPC; do { free = percpu_counter_sum(&mp->m_fdblocks) - - mp->m_alloc_set_aside; + xfs_fdblocks_unavailable(mp); if (free <= 0) break; diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index bed73e8002a5..29ffa8c42795 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1146,7 +1146,7 @@ xfs_mod_fdblocks( * problems (i.e. transaction abort, pagecache discards, etc.) than * slightly premature -ENOSPC. */ - set_aside = mp->m_alloc_set_aside + atomic64_read(&mp->m_allocbt_blks); + set_aside = xfs_fdblocks_unavailable(mp); percpu_counter_add_batch(&mp->m_fdblocks, delta, batch); if (__percpu_counter_compare(&mp->m_fdblocks, set_aside, XFS_FDBLOCKS_BATCH) >= 0) { diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 00720a02e761..f6dc19de8322 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -479,6 +479,21 @@ extern void xfs_unmountfs(xfs_mount_t *); */ #define XFS_FDBLOCKS_BATCH 1024 +/* + * Estimate the amount of free space that is not available to userspace and is + * not explicitly reserved from the incore fdblocks. This includes: + * + * - The minimum number of blocks needed to support splitting a bmap btree + * - The blocks currently in use by the freespace btrees because they record + * the actual blocks that will fill per-AG metadata space reservations + */ +static inline uint64_t +xfs_fdblocks_unavailable( + struct xfs_mount *mp) +{ + return mp->m_alloc_set_aside + atomic64_read(&mp->m_allocbt_blks); +} + extern int xfs_mod_fdblocks(struct xfs_mount *mp, int64_t delta, bool reserved); extern int xfs_mod_frextents(struct xfs_mount *mp, int64_t delta); |