[PATCH v2 5/8] btrfs: check for relocation inodes on zoned btrfs in should_nocow
From: Johannes Thumshirn <hidden>
Date: 2021-09-08 16:19:52
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
Prepare for allowing preallocation for relocation inodes. Signed-off-by: Johannes Thumshirn <redacted> Reviewed-by: Naohiro Aota <naohiro.aota@wdc.com> --- fs/btrfs/inode.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e89e16a9c56c..4eb64753382c 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c@@ -1944,7 +1944,15 @@ int btrfs_run_delalloc_range(struct btrfs_inode *inode, struct page *locked_page const bool zoned = btrfs_is_zoned(inode->root->fs_info); if (should_nocow(inode, start, end)) { - ASSERT(!zoned); + /* + * Normally on a zoned device we're only doing CoW writes, but + * in case of relocation on a zoned FS we have taken precaution, + * that we're only writing sequentially. It's safe to use + * run_delalloc_nocow() here, like for regular preallocated + * inodes. + */ + ASSERT(!zoned || + (zoned && btrfs_is_data_reloc_root(inode->root))); ret = run_delalloc_nocow(inode, locked_page, start, end, page_started, nr_written); } else if (!inode_can_compress(inode) ||
--
2.32.0