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xfs: specify AG in bulk req

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Add a new xfs_bulk_ireq flag to constrain the iteration to a single AG.
If the passed-in startino value is zero then we start with the first
inode in the AG that the user passes in; otherwise, we iterate only
within the same AG as the passed-in inode.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Darrick J. Wong 2019-07-03 20:36:28 -07:00
parent fba9760a43
commit 13d59a2a61
7 changed files with 69 additions and 12 deletions
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10
fs/xfs/libxfs/xfs_fs.h
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@ -462,11 +462,17 @@ struct xfs_bulk_ireq {
uint32_t flags; /* I/O: operation flags */
uint32_t icount; /* I: count of entries in buffer */
uint32_t ocount; /* O: count of entries filled out */
uint32_t reserved32; /* must be zero */
uint32_t agno; /* I: see comment for IREQ_AGNO */
uint64_t reserved[5]; /* must be zero */
};
#define XFS_BULK_IREQ_FLAGS_ALL (0)
/*
* Only return results from the specified @agno. If @ino is zero, start
* with the first inode of @agno.
*/
#define XFS_BULK_IREQ_AGNO (1 << 0)
#define XFS_BULK_IREQ_FLAGS_ALL (XFS_BULK_IREQ_AGNO)
/*
* ioctl structures for v5 bulkstat and inumbers requests