diff options
Diffstat (limited to 'fs/xfs/xfs_super.c')
| -rw-r--r-- | fs/xfs/xfs_super.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 912442cf0f8..dab9a5f6dfd 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -950,6 +950,22 @@ xfs_fs_evict_inode( xfs_inactive(ip); } +/* + * 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); + + return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); +} + STATIC void xfs_free_fsname( struct xfs_mount *mp) @@ -1433,6 +1449,7 @@ static const struct super_operations xfs_super_operations = { .destroy_inode = xfs_fs_destroy_inode, .dirty_inode = xfs_fs_dirty_inode, .evict_inode = xfs_fs_evict_inode, + .drop_inode = xfs_fs_drop_inode, .put_super = xfs_fs_put_super, .sync_fs = xfs_fs_sync_fs, .freeze_fs = xfs_fs_freeze, @@ -1606,12 +1623,28 @@ xfs_init_workqueues(void) xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_NON_REENTRANT, 0); if (!xfs_syncd_wq) return -ENOMEM; + + /* + * 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, 0); + if (!xfs_alloc_wq) + goto out_destroy_syncd; + return 0; + +out_destroy_syncd: + destroy_workqueue(xfs_syncd_wq); + return -ENOMEM; } STATIC void xfs_destroy_workqueues(void) { + destroy_workqueue(xfs_alloc_wq); destroy_workqueue(xfs_syncd_wq); } |