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Diffstat (limited to 'fs/xfs/xfs_icache.c')
-rw-r--r--fs/xfs/xfs_icache.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index f35e2cee5265..ddeaccc04aec 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -1853,12 +1853,20 @@ xfs_inodegc_worker(
struct xfs_inodegc, work);
struct llist_node *node = llist_del_all(&gc->list);
struct xfs_inode *ip, *n;
+ unsigned int nofs_flag;
WRITE_ONCE(gc->items, 0);
if (!node)
return;
+ /*
+ * We can allocate memory here while doing writeback on behalf of
+ * memory reclaim. To avoid memory allocation deadlocks set the
+ * task-wide nofs context for the following operations.
+ */
+ nofs_flag = memalloc_nofs_save();
+
ip = llist_entry(node, struct xfs_inode, i_gclist);
trace_xfs_inodegc_worker(ip->i_mount, READ_ONCE(gc->shrinker_hits));
@@ -1867,6 +1875,8 @@ xfs_inodegc_worker(
xfs_iflags_set(ip, XFS_INACTIVATING);
xfs_inodegc_inactivate(ip);
}
+
+ memalloc_nofs_restore(nofs_flag);
}
/*