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xfs: Add xfs_log_rlimit.c

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Add source files for xfs_log_rlimit.c The new file is used for log
size calculations and validation shared with userspace.

[dchinner: xfs_log_calc_max_attrsetm_res() does not modify the
tr_attrsetm reservation, just calculates the maximum. ]

[dchinner: rework loop in xfs_log_get_max_trans_res() ]

Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Jie Liu
2013-08-12 20:50:02 +10:00
committed by Ben Myers
parent e773fc934f
commit 5a96a94547
3 changed files with 152 additions and 1 deletions
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7
fs/xfs/xfs_log_format.h
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@@ -19,6 +19,7 @@
#define __XFS_LOG_FORMAT_H__
struct xfs_mount;
struct xfs_trans_res;
/*
* On-disk Log Format definitions.
@@ -51,6 +52,9 @@ typedef __uint32_t xlog_tid_t;
#define XLOG_HEADER_SIZE 512
/* Minimum number of transactions that must fit in the log (defined by mkfs) */
#define XFS_MIN_LOG_FACTOR 3
#define XLOG_REC_SHIFT(log) \
BTOBB(1 << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
@@ -135,7 +139,6 @@ typedef struct xlog_op_header {
__u16 oh_res2; /* 32 bit align : 2 b */
} xlog_op_header_t;
/* valid values for h_fmt */
#define XLOG_FMT_UNKNOWN 0
#define XLOG_FMT_LINUX_LE 1
@@ -837,5 +840,7 @@ struct xfs_icreate_log {
};
int xfs_log_calc_unit_res(struct xfs_mount *mp, int unit_bytes);
int xfs_log_calc_minimum_size(struct xfs_mount *);
#endif /* __XFS_LOG_FORMAT_H__ */