xfs
[Top] [All Lists]

[PATCH 8/9] xfs: add fsgeom flag for v5 superblock support.

To: xfs@xxxxxxxxxxx
Subject: [PATCH 8/9] xfs: add fsgeom flag for v5 superblock support.
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Mon, 27 May 2013 16:38:26 +1000
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <1369636707-15150-1-git-send-email-david@xxxxxxxxxxxxx>
References: <1369636707-15150-1-git-send-email-david@xxxxxxxxxxxxx>
From: Dave Chinner <dchinner@xxxxxxxxxx>

Currently userspace has no way of determining that a filesystem is
CRC enabled. Add a flag to the XFS_IOC_FSGEOMETRY ioctl output to
indicate that the filesystem has v5 superblock support enabled.
This will allow xfs_info to correctly report the state of the
filesystem.

Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
 fs/xfs/xfs_fs.h    |    1 +
 fs/xfs/xfs_fsops.c |    4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h
index 6dda3f9..d046955 100644
--- a/fs/xfs/xfs_fs.h
+++ b/fs/xfs/xfs_fs.h
@@ -236,6 +236,7 @@ typedef struct xfs_fsop_resblks {
 #define XFS_FSOP_GEOM_FLAGS_PROJID32   0x0800  /* 32-bit project IDs   */
 #define XFS_FSOP_GEOM_FLAGS_DIRV2CI    0x1000  /* ASCII only CI names  */
 #define XFS_FSOP_GEOM_FLAGS_LAZYSB     0x4000  /* lazy superblock counters */
+#define XFS_FSOP_GEOM_FLAGS_V5SB       0x8000  /* version 5 superblock */
 
 
 /*
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 87595b2..3c3644e 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -99,7 +99,9 @@ xfs_fs_geometry(
                        (xfs_sb_version_hasattr2(&mp->m_sb) ?
                                XFS_FSOP_GEOM_FLAGS_ATTR2 : 0) |
                        (xfs_sb_version_hasprojid32bit(&mp->m_sb) ?
-                               XFS_FSOP_GEOM_FLAGS_PROJID32 : 0);
+                               XFS_FSOP_GEOM_FLAGS_PROJID32 : 0) |
+                       (xfs_sb_version_hascrc(&mp->m_sb) ?
+                               XFS_FSOP_GEOM_FLAGS_V5SB : 0);
                geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ?
                                mp->m_sb.sb_logsectsize : BBSIZE;
                geo->rtsectsize = mp->m_sb.sb_blocksize;
-- 
1.7.10.4

<Prev in Thread] Current Thread [Next in Thread>