diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_format.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_format.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index b42a52bfa1e9..4f665646ba7d 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -1199,6 +1199,22 @@ typedef struct xfs_dqblk { #define XFS_DQUOT_CRC_OFF offsetof(struct xfs_dqblk, dd_crc) /* + * This defines the unit of allocation of dquots. + * + * Currently, it is just one file system block, and a 4K blk contains 30 + * (136 * 30 = 4080) dquots. It's probably not worth trying to make + * this more dynamic. + * + * However, if this number is changed, we have to make sure that we don't + * implicitly assume that we do allocations in chunks of a single filesystem + * block in the dquot/xqm code. + * + * This is part of the ondisk format because the structure size is not a power + * of two, which leaves slack at the end of the disk block. + */ +#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1 + +/* * Remote symlink format and access functions. */ #define XFS_SYMLINK_MAGIC 0x58534c4d /* XSLM */ |