[PATCH 21/29] xfs: return -EAGAIN when bulk memory allocation fails in nowait case

Hao Xu
2023-08-25T14:04:24Z

Rather than wait for a moment and retry, we return -EAGAIN when we fail
to allocate bulk memory in xfs_buf_alloc_pages() in nowait case.

Signed-off-by: Hao Xu <howeyxu@tencent.com>
---
fs/xfs/xfs_buf.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index a6e6e64ff940..eb3cd7702545 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -404,6 +404,11 @@ xfs_buf_alloc_pages(
if (filled != last)
continue;

+ if (nowait) {
+ xfs_buf_free_pages(bp);
+ return -EAGAIN;
+ }
+
if (flags & XBF_READ_AHEAD) {
xfs_buf_free_pages(bp);
return -ENOMEM;
--
2.25.1