LU-17248 kernel: wait for pages under writeback for bdev

[fs/lustre-release.git] / lustre / kernel_patches / patches / mm-wait_for_stable_page-should-check-for-bdev-rhel8.6.patch

diff --git a/lustre/kernel_patches/patches/mm-wait_for_stable_page-should-check-for-bdev-rhel8.6.patch b/lustre/kernel_patches/patches/mm-wait_for_stable_page-should-check-for-bdev-rhel8.6.patch
new file mode 100644 (file)
index 0000000..9b03738
--- /dev/null
+++ b/lustre/kernel_patches/patches/mm-wait_for_stable_page-should-check-for-bdev-rhel8.6.patch
@@ -0,0 +1,18 @@
+Index: linux-4.18.0-372.32.1.el8_6/mm/page-writeback.c
+===================================================================
+--- linux-4.18.0-372.32.1.el8_6.orig/mm/page-writeback.c
++++ linux-4.18.0-372.32.1.el8_6/mm/page-writeback.c
+@@ -2894,7 +2894,12 @@ EXPORT_SYMBOL_GPL(wait_on_page_writeback
+  */
+ void wait_for_stable_page(struct page *page)
+ {
+-      if (page->mapping->host->i_sb->s_iflags & SB_I_STABLE_WRITES)
++      struct inode *inode = page->mapping->host;
++      struct super_block *sb = inode->i_sb;
++
++      if ((sb->s_iflags & SB_I_STABLE_WRITES) ||
++          (sb_is_blkdev_sb(sb) &&
++           blk_queue_stable_writes(I_BDEV(inode)->bd_disk->queue)))
+               wait_on_page_writeback(page);
+ }
+ EXPORT_SYMBOL_GPL(wait_for_stable_page);