aboutsummaryrefslogtreecommitdiffstats
path: root/include/uapi/linux/gfs2_ondisk.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/uapi/linux/gfs2_ondisk.h')
-rw-r--r--include/uapi/linux/gfs2_ondisk.h62
1 files changed, 57 insertions, 5 deletions
diff --git a/include/uapi/linux/gfs2_ondisk.h b/include/uapi/linux/gfs2_ondisk.h
index 5156bad77b47..2dc10a034de1 100644
--- a/include/uapi/linux/gfs2_ondisk.h
+++ b/include/uapi/linux/gfs2_ondisk.h
@@ -187,10 +187,19 @@ struct gfs2_rgrp {
__be32 rg_flags;
__be32 rg_free;
__be32 rg_dinodes;
- __be32 __pad;
+ union {
+ __be32 __pad;
+ __be32 rg_skip; /* Distance to the next rgrp in fs blocks */
+ };
__be64 rg_igeneration;
-
- __u8 rg_reserved[80]; /* Several fields from gfs1 now reserved */
+ /* The following 3 fields are duplicated from gfs2_rindex to reduce
+ reliance on the rindex */
+ __be64 rg_data0; /* First data location */
+ __be32 rg_data; /* Number of data blocks in rgrp */
+ __be32 rg_bitbytes; /* Number of bytes in data bitmaps */
+ __be32 rg_crc; /* crc32 of the structure with this field 0 */
+
+ __u8 rg_reserved[60]; /* Several fields from gfs1 now reserved */
};
/*
@@ -394,7 +403,36 @@ struct gfs2_ea_header {
* Log header structure
*/
-#define GFS2_LOG_HEAD_UNMOUNT 0x00000001 /* log is clean */
+#define GFS2_LOG_HEAD_UNMOUNT 0x00000001 /* log is clean */
+#define GFS2_LOG_HEAD_FLUSH_NORMAL 0x00000002 /* normal log flush */
+#define GFS2_LOG_HEAD_FLUSH_SYNC 0x00000004 /* Sync log flush */
+#define GFS2_LOG_HEAD_FLUSH_SHUTDOWN 0x00000008 /* Shutdown log flush */
+#define GFS2_LOG_HEAD_FLUSH_FREEZE 0x00000010 /* Freeze flush */
+#define GFS2_LOG_HEAD_RECOVERY 0x00000020 /* Journal recovery */
+#define GFS2_LOG_HEAD_USERSPACE 0x80000000 /* Written by gfs2-utils */
+
+/* Log flush callers */
+#define GFS2_LFC_SHUTDOWN 0x00000100
+#define GFS2_LFC_JDATA_WPAGES 0x00000200
+#define GFS2_LFC_SET_FLAGS 0x00000400
+#define GFS2_LFC_AIL_EMPTY_GL 0x00000800
+#define GFS2_LFC_AIL_FLUSH 0x00001000
+#define GFS2_LFC_RGRP_GO_SYNC 0x00002000
+#define GFS2_LFC_INODE_GO_SYNC 0x00004000
+#define GFS2_LFC_INODE_GO_INVAL 0x00008000
+#define GFS2_LFC_FREEZE_GO_SYNC 0x00010000
+#define GFS2_LFC_KILL_SB 0x00020000
+#define GFS2_LFC_DO_SYNC 0x00040000
+#define GFS2_LFC_INPLACE_RESERVE 0x00080000
+#define GFS2_LFC_WRITE_INODE 0x00100000
+#define GFS2_LFC_MAKE_FS_RO 0x00200000
+#define GFS2_LFC_SYNC_FS 0x00400000
+#define GFS2_LFC_EVICT_INODE 0x00800000
+#define GFS2_LFC_TRANS_END 0x01000000
+#define GFS2_LFC_LOGD_JFLUSH_REQD 0x02000000
+#define GFS2_LFC_LOGD_AIL_FLUSH_REQD 0x04000000
+
+#define LH_V1_SIZE (offsetofend(struct gfs2_log_header, lh_hash))
struct gfs2_log_header {
struct gfs2_meta_header lh_header;
@@ -403,7 +441,21 @@ struct gfs2_log_header {
__be32 lh_flags; /* GFS2_LOG_HEAD_... */
__be32 lh_tail; /* Block number of log tail */
__be32 lh_blkno;
- __be32 lh_hash;
+ __be32 lh_hash; /* crc up to here with this field 0 */
+
+ /* Version 2 additional fields start here */
+ __be32 lh_crc; /* crc32c from lh_nsec to end of block */
+ __be32 lh_nsec; /* Nanoseconds of timestamp */
+ __be64 lh_sec; /* Seconds of timestamp */
+ __be64 lh_addr; /* Block addr of this log header (absolute) */
+ __be64 lh_jinode; /* Journal inode number */
+ __be64 lh_statfs_addr; /* Local statfs inode number */
+ __be64 lh_quota_addr; /* Local quota change inode number */
+
+ /* Statfs local changes (i.e. diff from global statfs) */
+ __be64 lh_local_total;
+ __be64 lh_local_free;
+ __be64 lh_local_dinodes;
};
/*

Privacy Policy