[Ocfs2-devel] [PATCH 26/30] ocfs2: Handle missing const struct
inode_operations in struct inode
Sunil Mushran
sunil.mushran at oracle.com
Thu Dec 20 15:29:43 PST 2007
Commit c5ef1c42c51b1b5b4a401a6517bdda30933ddbaf in mainline marks struct
inode_operations in struct inode as a const. This patch allows one to build
ocfs2 with kernels having/not having this change.
Signed-off-by: Sunil Mushran <sunil.mushran at oracle.com>
---
Config.make.in | 1 +
configure.in | 5 +++++
fs/ocfs2/Makefile | 4 ++++
fs/ocfs2/dlm/Makefile | 4 ++++
fs/ocfs2/dlm/dlmfs.c | 18 ++++++++++++++++++
fs/ocfs2/file.c | 8 ++++++++
fs/ocfs2/file.h | 5 +++++
fs/ocfs2/namei.c | 4 ++++
fs/ocfs2/namei.h | 4 ++++
fs/ocfs2/symlink.c | 8 ++++++++
fs/ocfs2/symlink.h | 5 +++++
11 files changed, 66 insertions(+), 0 deletions(-)
diff --git a/Config.make.in b/Config.make.in
index 938ac53..d4cd518 100644
--- a/Config.make.in
+++ b/Config.make.in
@@ -70,6 +70,7 @@ SPLICE_HEADER = @SPLICE_HEADER@
GENERIC_SEGMENT_CHECKS = @GENERIC_SEGMENT_CHECKS@
FAULT_IN_VMOPS = @FAULT_IN_VMOPS@
SOP_IS_CONST = @SOP_IS_CONST@
+IOP_IS_CONST = @IOP_IS_CONST@
OCFS_DEBUG = @OCFS_DEBUG@
diff --git a/configure.in b/configure.in
index 3093542..8a23983 100644
--- a/configure.in
+++ b/configure.in
@@ -277,6 +277,11 @@ OCFS2_CHECK_KERNEL([s_op declared as const in struct super_block in fs.h], fs.h,
SOP_IS_CONST=yes, , [^.*const struct super_operations.*\*s_op;])
AC_SUBST(SOP_IS_CONST)
+IOP_IS_CONST=
+OCFS2_CHECK_KERNEL([i_op declared as const in struct inode in fs.h], fs.h,
+ IOP_IS_CONST=yes, , [^.*const struct inode_operations.*\*i_op;])
+AC_SUBST(IOP_IS_CONST)
+
# using -include has two advantages:
# the source doesn't need to know to include compat headers
# the compat header file names don't go through the search path
diff --git a/fs/ocfs2/Makefile b/fs/ocfs2/Makefile
index 4ce2431..97912fd 100644
--- a/fs/ocfs2/Makefile
+++ b/fs/ocfs2/Makefile
@@ -69,6 +69,10 @@ ifdef SOPS_IS_CONST
EXTRA_CFLAGS += -DSOPS_IS_CONST
endif
+ifdef IOP_IS_CONST
+EXTRA_CFLAGS += -DIOP_IS_CONST
+endif
+
#
# Since SUBDIRS means something to kbuild, define them safely. Do not
# include trailing slashes.
diff --git a/fs/ocfs2/dlm/Makefile b/fs/ocfs2/dlm/Makefile
index 2df255e..c7edb07 100644
--- a/fs/ocfs2/dlm/Makefile
+++ b/fs/ocfs2/dlm/Makefile
@@ -32,6 +32,10 @@ ifdef SOP_IS_CONST
EXTRA_CFLAGS += -DSOP_IS_CONST
endif
+ifdef IOP_IS_CONST
+EXTRA_CFLAGS += -DIOP_IS_CONST
+endif
+
DLM_SOURCES = \
dlmast.c \
dlmconvert.c \
diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlm/dlmfs.c
index dc5b5a5..9ff18be 100644
--- a/fs/ocfs2/dlm/dlmfs.c
+++ b/fs/ocfs2/dlm/dlmfs.c
@@ -66,9 +66,15 @@ static const struct super_operations dlmfs_ops;
static struct super_operations dlmfs_ops;
#endif
static const struct file_operations dlmfs_file_operations;
+#ifdef IOP_IS_CONST
static const struct inode_operations dlmfs_dir_inode_operations;
static const struct inode_operations dlmfs_root_inode_operations;
static const struct inode_operations dlmfs_file_inode_operations;
+#else
+static struct inode_operations dlmfs_dir_inode_operations;
+static struct inode_operations dlmfs_root_inode_operations;
+static struct inode_operations dlmfs_file_inode_operations;
+#endif
static struct kmem_cache *dlmfs_inode_cache;
struct workqueue_struct *user_dlm_worker;
@@ -547,14 +553,22 @@ static const struct file_operations dlmfs_file_operations = {
.write = dlmfs_file_write,
};
+#ifdef IOP_IS_CONST
static const struct inode_operations dlmfs_dir_inode_operations = {
+#else
+static struct inode_operations dlmfs_dir_inode_operations = {
+#endif
.create = dlmfs_create,
.lookup = simple_lookup,
.unlink = dlmfs_unlink,
};
/* this way we can restrict mkdir to only the toplevel of the fs. */
+#ifdef IOP_IS_CONST
static const struct inode_operations dlmfs_root_inode_operations = {
+#else
+static struct inode_operations dlmfs_root_inode_operations = {
+#endif
.lookup = simple_lookup,
.mkdir = dlmfs_mkdir,
.rmdir = simple_rmdir,
@@ -572,7 +586,11 @@ static struct super_operations dlmfs_ops = {
.drop_inode = generic_delete_inode,
};
+#ifdef IOP_IS_CONST
static const struct inode_operations dlmfs_file_inode_operations = {
+#else
+static struct inode_operations dlmfs_file_inode_operations = {
+#endif
.getattr = simple_getattr,
};
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index dd074af..e74730d 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -2469,7 +2469,11 @@ bail:
return ret;
}
+#ifdef IOP_IS_CONST
const struct inode_operations ocfs2_file_iops = {
+#else
+struct inode_operations ocfs2_file_iops = {
+#endif
.setattr = ocfs2_setattr,
.getattr = ocfs2_getattr,
.permission = ocfs2_permission,
@@ -2478,7 +2482,11 @@ const struct inode_operations ocfs2_file_iops = {
#endif
};
+#ifdef IOP_IS_CONST
const struct inode_operations ocfs2_special_file_iops = {
+#else
+struct inode_operations ocfs2_special_file_iops = {
+#endif
.setattr = ocfs2_setattr,
.getattr = ocfs2_getattr,
.permission = ocfs2_permission,
diff --git a/fs/ocfs2/file.h b/fs/ocfs2/file.h
index 066f14a..7bf6f9d 100644
--- a/fs/ocfs2/file.h
+++ b/fs/ocfs2/file.h
@@ -28,8 +28,13 @@
extern const struct file_operations ocfs2_fops;
extern const struct file_operations ocfs2_dops;
+#ifdef IOP_IS_CONST
extern const struct inode_operations ocfs2_file_iops;
extern const struct inode_operations ocfs2_special_file_iops;
+#else
+extern struct inode_operations ocfs2_file_iops;
+extern struct inode_operations ocfs2_special_file_iops;
+#endif
struct ocfs2_alloc_context;
enum ocfs2_alloc_restarted {
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 7292590..5ddcc23 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -1898,7 +1898,11 @@ leave:
return status;
}
+#ifdef IOP_IS_CONST
const struct inode_operations ocfs2_dir_iops = {
+#else
+struct inode_operations ocfs2_dir_iops = {
+#endif
.create = ocfs2_create,
.lookup = ocfs2_lookup,
.link = ocfs2_link,
diff --git a/fs/ocfs2/namei.h b/fs/ocfs2/namei.h
index 688aef6..66e1dee 100644
--- a/fs/ocfs2/namei.h
+++ b/fs/ocfs2/namei.h
@@ -26,7 +26,11 @@
#ifndef OCFS2_NAMEI_H
#define OCFS2_NAMEI_H
+#ifdef IOP_IS_CONST
extern const struct inode_operations ocfs2_dir_iops;
+#else
+extern struct inode_operations ocfs2_dir_iops;
+#endif
struct dentry *ocfs2_get_parent(struct dentry *child);
diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c
index 7134007..d77c1d4 100644
--- a/fs/ocfs2/symlink.c
+++ b/fs/ocfs2/symlink.c
@@ -163,12 +163,20 @@ bail:
return ERR_PTR(status);
}
+#ifdef IOP_IS_CONST
const struct inode_operations ocfs2_symlink_inode_operations = {
+#else
+struct inode_operations ocfs2_symlink_inode_operations = {
+#endif
.readlink = page_readlink,
.follow_link = ocfs2_follow_link,
.getattr = ocfs2_getattr,
};
+#ifdef IOP_IS_CONST
const struct inode_operations ocfs2_fast_symlink_inode_operations = {
+#else
+struct inode_operations ocfs2_fast_symlink_inode_operations = {
+#endif
.readlink = ocfs2_readlink,
.follow_link = ocfs2_follow_link,
.getattr = ocfs2_getattr,
diff --git a/fs/ocfs2/symlink.h b/fs/ocfs2/symlink.h
index 65a6c9c..fd0ed70 100644
--- a/fs/ocfs2/symlink.h
+++ b/fs/ocfs2/symlink.h
@@ -26,8 +26,13 @@
#ifndef OCFS2_SYMLINK_H
#define OCFS2_SYMLINK_H
+#ifdef IOP_IS_CONST
extern const struct inode_operations ocfs2_symlink_inode_operations;
extern const struct inode_operations ocfs2_fast_symlink_inode_operations;
+#else
+extern struct inode_operations ocfs2_symlink_inode_operations;
+extern struct inode_operations ocfs2_fast_symlink_inode_operations;
+#endif
/*
* Test whether an inode is a fast symlink.
--
1.5.2.5
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