linux-kernel - [PATCH v13 57/59] ceph: set i_blkbits to crypto block size for encrypted inodes

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Date:   Tue,  5 Apr 2022 15:20:28 -0400
From:   Jeff Layton <jlayton@...nel.org>
To:     idryomov@...il.com, xiubli@...hat.com
Cc:     ceph-devel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-fscrypt@...r.kernel.org, linux-kernel@...r.kernel.org,
        lhenriques@...e.de
Subject: [PATCH v13 57/59] ceph: set i_blkbits to crypto block size for encrypted inodes

Some of the underlying infrastructure for fscrypt relies on i_blkbits
being aligned to the crypto blocksize.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 fs/ceph/inode.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index eb8f066975a8..45ca4e598ef0 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -976,13 +976,6 @@ int ceph_fill_inode(struct inode *inode, struct page *locked_page,
 	issued |= __ceph_caps_dirty(ci);
 	new_issued = ~issued & info_caps;
 
-	/* directories have fl_stripe_unit set to zero */
-	if (le32_to_cpu(info->layout.fl_stripe_unit))
-		inode->i_blkbits =
-			fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
-	else
-		inode->i_blkbits = CEPH_BLOCK_SHIFT;
-
 	__ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files);
 
 #ifdef CONFIG_FS_ENCRYPTION
@@ -1008,6 +1001,15 @@ int ceph_fill_inode(struct inode *inode, struct page *locked_page,
 		ceph_decode_timespec64(&ci->i_snap_btime, &iinfo->snap_btime);
 	}
 
+	/* directories have fl_stripe_unit set to zero */
+	if (IS_ENCRYPTED(inode))
+		inode->i_blkbits = CEPH_FSCRYPT_BLOCK_SHIFT;
+	else if (le32_to_cpu(info->layout.fl_stripe_unit))
+		inode->i_blkbits =
+			fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
+	else
+		inode->i_blkbits = CEPH_BLOCK_SHIFT;
+
 	if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) &&
 	    (issued & CEPH_CAP_LINK_EXCL) == 0)
 		set_nlink(inode, le32_to_cpu(info->nlink));
-- 
2.35.1