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xfs: add fsgeom flag for v5 superblock support.

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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@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

(cherry picked from commit 74137fff06)
This commit is contained in:
Dave Chinner 2013-05-27 16:38:26 +10:00 committed by Ben Myers
parent 1de09d1ae4
commit e7927e879d
2 changed files with 4 additions and 1 deletions
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1
fs/xfs/xfs_fs.h
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@ -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 */
/*

4
fs/xfs/xfs_fsops.c
View file

@ -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;