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-rw-r--r--fs/xfs/linux-2.6/xfs_super.c1
-rw-r--r--fs/xfs/xfs_clnt.h1
-rw-r--r--fs/xfs/xfs_mount.c12
-rw-r--r--fs/xfs/xfs_mount.h1
-rw-r--r--fs/xfs/xfs_sb.h7
-rw-r--r--fs/xfs/xfs_vfsops.c9
6 files changed, 29 insertions, 2 deletions
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 943381284e2e..1b60e46f527f 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -314,6 +314,7 @@ xfs_parseargs(
args->flags |= XFSMNT_ATTR2;
} else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
args->flags &= ~XFSMNT_ATTR2;
+ args->flags |= XFSMNT_NOATTR2;
} else if (!strcmp(this_char, MNTOPT_FILESTREAM)) {
args->flags2 |= XFSMNT2_FILESTREAMS;
} else if (!strcmp(this_char, MNTOPT_NOQUOTA)) {
diff --git a/fs/xfs/xfs_clnt.h b/fs/xfs/xfs_clnt.h
index d5d1e60ee224..d2ce5dd70d87 100644
--- a/fs/xfs/xfs_clnt.h
+++ b/fs/xfs/xfs_clnt.h
@@ -78,6 +78,7 @@ struct xfs_mount_args {
#define XFSMNT_IOSIZE 0x00002000 /* optimize for I/O size */
#define XFSMNT_OSYNCISOSYNC 0x00004000 /* o_sync is REALLY o_sync */
/* (osyncisdsync is default) */
+#define XFSMNT_NOATTR2 0x00008000 /* turn off ATTR2 EA format */
#define XFSMNT_32BITINODES 0x00200000 /* restrict inodes to 32
* bits of address space */
#define XFSMNT_GQUOTA 0x00400000 /* group quota accounting */
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index da3988453b71..361c7a755a07 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -994,9 +994,19 @@ xfs_mountfs(
* Re-check for ATTR2 in case it was found in bad_features2
* slot.
*/
- if (xfs_sb_version_hasattr2(&mp->m_sb))
+ if (xfs_sb_version_hasattr2(&mp->m_sb) &&
+ !(mp->m_flags & XFS_MOUNT_NOATTR2))
mp->m_flags |= XFS_MOUNT_ATTR2;
+ }
+
+ if (xfs_sb_version_hasattr2(&mp->m_sb) &&
+ (mp->m_flags & XFS_MOUNT_NOATTR2)) {
+ xfs_sb_version_removeattr2(&mp->m_sb);
+ update_flags |= XFS_SB_FEATURES2;
+ /* update sb_versionnum for the clearing of the morebits */
+ if (!sbp->sb_features2)
+ update_flags |= XFS_SB_VERSIONNUM;
}
/*
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 63e0693a358a..4aff0c125ad3 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -378,6 +378,7 @@ typedef struct xfs_mount {
counters */
#define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
allocator */
+#define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
/*
diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h
index d904efe7f871..e3204a36a222 100644
--- a/fs/xfs/xfs_sb.h
+++ b/fs/xfs/xfs_sb.h
@@ -473,6 +473,13 @@ static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp)
((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT)));
}
+static inline void xfs_sb_version_removeattr2(xfs_sb_t *sbp)
+{
+ sbp->sb_features2 &= ~XFS_SB_VERSION2_ATTR2BIT;
+ if (!sbp->sb_features2)
+ sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT;
+}
+
/*
* end of superblock version macros
*/
diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index 30bacd8bb0e5..bbc911720d81 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -284,6 +284,8 @@ xfs_start_flags(
mp->m_flags |= XFS_MOUNT_DIRSYNC;
if (ap->flags & XFSMNT_ATTR2)
mp->m_flags |= XFS_MOUNT_ATTR2;
+ if (ap->flags & XFSMNT_NOATTR2)
+ mp->m_flags |= XFS_MOUNT_NOATTR2;
if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE)
mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
@@ -346,7 +348,12 @@ xfs_finish_flags(
}
}
- if (xfs_sb_version_hasattr2(&mp->m_sb))
+ /*
+ * mkfs'ed attr2 will turn on attr2 mount unless explicitly
+ * told by noattr2 to turn it off
+ */
+ if (xfs_sb_version_hasattr2(&mp->m_sb) &&
+ !(ap->flags & XFSMNT_NOATTR2))
mp->m_flags |= XFS_MOUNT_ATTR2;
/*