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-rw-r--r--fs/nfs/write.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index e056f61..175d5d0 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -478,13 +478,23 @@ try_again:
return NULL;
}
- /* lock each request in the page group */
+ /* holding inode lock, so always make a non-blocking call to try the
+ * page group lock */
ret = nfs_page_group_lock(head, true);
if (ret < 0) {
spin_unlock(&inode->i_lock);
+
+ if (!nonblock && ret == -EAGAIN) {
+ nfs_page_group_lock_wait(head);
+ nfs_release_request(head);
+ goto try_again;
+ }
+
nfs_release_request(head);
return ERR_PTR(ret);
}
+
+ /* lock each request in the page group */
subreq = head;
do {
/*
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