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xfs: introduce v5 inode group structure

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Introduce a new "v5" inode group structure that fixes the alignment
and padding problems of the existing structure.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Darrick J. Wong
2019-07-03 20:36:27 -07:00
parent 7035f9724f
commit 5f19c7fc68
7 changed files with 42 additions and 9 deletions
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11
fs/xfs/libxfs/xfs_fs.h
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@@ -445,6 +445,17 @@ struct xfs_inogrp {
__u64 xi_allocmask; /* mask of allocated inodes */
};
/* New inumbers structure that reports v5 features and fixes padding issues */
struct xfs_inumbers {
uint64_t xi_startino; /* starting inode number */
uint64_t xi_allocmask; /* mask of allocated inodes */
uint8_t xi_alloccount; /* # bits set in allocmask */
uint8_t xi_version; /* version */
uint8_t xi_padding[6]; /* zero */
};
#define XFS_INUMBERS_VERSION_V1 (1)
#define XFS_INUMBERS_VERSION_V5 (5)
/*
* Error injection.