[XFS] Rework the final mount options flag bit to make room for more.
SGI-PV: 943866
SGI-Modid: xfs-linux:xfs-kern:24030a
Signed-off-by: Nathan Scott <nathans@sgi.com>
diff --git a/fs/xfs/xfs_clnt.h b/fs/xfs/xfs_clnt.h
index 1fbe2bf..328a528 100644
--- a/fs/xfs/xfs_clnt.h
+++ b/fs/xfs/xfs_clnt.h
@@ -41,6 +41,7 @@
*/
struct xfs_mount_args {
int flags; /* flags -> see XFSMNT_... macros below */
+ int flags2; /* flags -> see XFSMNT2_... macros below */
int logbufs; /* Number of log buffers, -1 to default */
int logbufsize; /* Size of log buffers, -1 to default */
char fsname[MAXNAMELEN+1]; /* data device name */
@@ -54,7 +55,7 @@
};
/*
- * XFS mount option flags
+ * XFS mount option flags -- args->flags1
*/
#define XFSMNT_COMPAT_ATTR 0x00000001 /* do not use ATTR2 format */
#define XFSMNT_WSYNC 0x00000002 /* safe mode nfs mount
@@ -77,7 +78,7 @@
#define XFSMNT_SHARED 0x00001000 /* shared XFS mount */
#define XFSMNT_IOSIZE 0x00002000 /* optimize for I/O size */
#define XFSMNT_OSYNCISOSYNC 0x00004000 /* o_sync is REALLY o_sync */
- /* (osyncisdsync is now default) */
+ /* (osyncisdsync is default) */
#define XFSMNT_32BITINODES 0x00200000 /* restrict inodes to 32
* bits of address space */
#define XFSMNT_GQUOTA 0x00400000 /* group quota accounting */
@@ -92,7 +93,12 @@
#define XFSMNT_IHASHSIZE 0x20000000 /* inode hash table size */
#define XFSMNT_DIRSYNC 0x40000000 /* sync creat,link,unlink,rename
* symlink,mkdir,rmdir,mknod */
-#define XFSMNT_COMPAT_IOSIZE 0x80000000 /* don't report large preferred
- * I/O size in stat() */
+#define XFSMNT_FLAGS2 0x80000000 /* more flags set in flags2 */
+
+/*
+ * XFS mount option flags -- args->flags2
+ */
+#define XFSMNT2_COMPAT_IOSIZE 0x00000001 /* don't report large preferred
+ * I/O size in stat(2) */
#endif /* __XFS_CLNT_H__ */
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 04f8e37..f724a2b 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -333,7 +333,7 @@
sema_t m_growlock; /* growfs mutex */
int m_fixedfsid[2]; /* unchanged for life of FS */
uint m_dmevmask; /* DMI events for this FS */
- uint m_flags; /* global mount flags */
+ __uint64_t m_flags; /* global mount flags */
uint m_attroffset; /* inode attribute offset */
uint m_dir_node_ents; /* #entries in a dir danode */
uint m_attr_node_ents; /* #entries in attr danode */
@@ -378,39 +378,39 @@
/*
* Flags for m_flags.
*/
-#define XFS_MOUNT_WSYNC 0x00000001 /* for nfs - all metadata ops
+#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
must be synchronous except
for space allocations */
-#define XFS_MOUNT_INO64 0x00000002
- /* 0x00000004 -- currently unused */
- /* 0x00000008 -- currently unused */
-#define XFS_MOUNT_FS_SHUTDOWN 0x00000010 /* atomic stop of all filesystem
+#define XFS_MOUNT_INO64 (1ULL << 1)
+ /* (1ULL << 2) -- currently unused */
+ /* (1ULL << 3) -- currently unused */
+#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
operations, typically for
disk errors in metadata */
-#define XFS_MOUNT_NOATIME 0x00000020 /* don't modify inode access
+#define XFS_MOUNT_NOATIME (1ULL << 5) /* don't modify inode access
times on reads */
-#define XFS_MOUNT_RETERR 0x00000040 /* return alignment errors to
+#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
user */
-#define XFS_MOUNT_NOALIGN 0x00000080 /* turn off stripe alignment
+#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
allocations */
-#define XFS_MOUNT_COMPAT_ATTR 0x00000100 /* do not use attr2 format */
- /* 0x00000200 -- currently unused */
-#define XFS_MOUNT_NORECOVERY 0x00000400 /* no recovery - dirty fs */
-#define XFS_MOUNT_SHARED 0x00000800 /* shared mount */
-#define XFS_MOUNT_DFLT_IOSIZE 0x00001000 /* set default i/o size */
-#define XFS_MOUNT_OSYNCISOSYNC 0x00002000 /* o_sync is REALLY o_sync */
+#define XFS_MOUNT_COMPAT_ATTR (1ULL << 8) /* do not use attr2 format */
+ /* (1ULL << 9) -- currently unused */
+#define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
+#define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
+#define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
+#define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
/* osyncisdsync is now default*/
-#define XFS_MOUNT_32BITINODES 0x00004000 /* do not create inodes above
+#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
* 32 bits in size */
-#define XFS_MOUNT_32BITINOOPT 0x00008000 /* saved mount option state */
-#define XFS_MOUNT_NOUUID 0x00010000 /* ignore uuid during mount */
-#define XFS_MOUNT_BARRIER 0x00020000
-#define XFS_MOUNT_IDELETE 0x00040000 /* delete empty inode clusters*/
-#define XFS_MOUNT_SWALLOC 0x00080000 /* turn on stripe width
+#define XFS_MOUNT_32BITINOOPT (1ULL << 15) /* saved mount option state */
+#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
+#define XFS_MOUNT_BARRIER (1ULL << 17)
+#define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/
+#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
* allocation */
-#define XFS_MOUNT_IHASHSIZE 0x00100000 /* inode hash table size */
-#define XFS_MOUNT_DIRSYNC 0x00200000 /* synchronous directory ops */
-#define XFS_MOUNT_COMPAT_IOSIZE 0x00400000 /* don't report large preferred
+#define XFS_MOUNT_IHASHSIZE (1ULL << 20) /* inode hash table size */
+#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
+#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
* I/O size in stat() */
diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index 96f7cde..f4f8805 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -291,11 +291,12 @@
mp->m_flags |= XFS_MOUNT_IDELETE;
if (ap->flags & XFSMNT_DIRSYNC)
mp->m_flags |= XFS_MOUNT_DIRSYNC;
- if (ap->flags & XFSMNT_COMPAT_IOSIZE)
- mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
if (ap->flags & XFSMNT_COMPAT_ATTR)
mp->m_flags |= XFS_MOUNT_COMPAT_ATTR;
+ if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE)
+ mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
+
/*
* no recovery flag requires a read-only mount
*/
@@ -1679,7 +1680,7 @@
int dsunit, dswidth, vol_dsunit, vol_dswidth;
int iosize;
- args->flags |= XFSMNT_COMPAT_IOSIZE;
+ args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
args->flags |= XFSMNT_COMPAT_ATTR;
#if 0 /* XXX: off by default, until some remaining issues ironed out */
@@ -1811,9 +1812,9 @@
} else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
args->flags |= XFSMNT_IDELETE;
} else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
- args->flags &= ~XFSMNT_COMPAT_IOSIZE;
+ args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE;
} else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
- args->flags |= XFSMNT_COMPAT_IOSIZE;
+ args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
} else if (!strcmp(this_char, MNTOPT_ATTR2)) {
args->flags &= ~XFSMNT_COMPAT_ATTR;
} else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
@@ -1867,6 +1868,8 @@
args->sunit = args->swidth = 0;
}
+ if (args->flags2)
+ args->flags |= XFSMNT_FLAGS2;
return 0;
}