[Cluster-devel] [PATCH 22/29] xfs: comment page allocation for nowait case in xfs_buf_find_insert()
Hao Xu <[email protected]> Fri, 25 Aug 2023 21:54:24 +0800
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From: Hao Xu <[email protected]> Add comments for page allocation in nowait case in xfs_buf_find_insert() Signed-off-by: Hao Xu <[email protected]> --- fs/xfs/xfs_buf.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index eb3cd7702545..57bdc4c5dde1 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -633,6 +633,8 @@ xfs_buf_find_insert( * allocate the memory from the heap to minimise memory usage. If we * can't get heap memory for these small buffers, we fall back to using * the page allocator. + * xfs_buf_alloc_kmem may return -EAGAIN, let's not return it but turn + * to page allocator as well. */ if (BBTOB(new_bp->b_length) >= PAGE_SIZE || xfs_buf_alloc_kmem(new_bp, flags) < 0) { -- 2.25.1