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Message-Id: <1164888963.3752.348.camel@quoit.chygwyn.com>
Date: Thu, 30 Nov 2006 12:16:03 +0000
From: Steven Whitehouse <swhiteho@...hat.com>
To: cluster-devel@...hat.com, linux-kernel@...r.kernel.org
Subject: [GFS2] Shrink gfs2_inode (2) - di_major/di_minor [22/70]
>>From e7f14f4d094ea1a9ce1953375f5bc1500c760c79 Mon Sep 17 00:00:00 2001
From: Steven Whitehouse <swhiteho@...hat.com>
Date: Tue, 31 Oct 2006 21:45:08 -0500
Subject: [PATCH] [GFS2] Shrink gfs2_inode (2) - di_major/di_minor
This removes the device numbers from this structure by using
inode->i_rdev instead. It also cleans up the code in gfs2_mknod.
It results in shrinking the gfs2_inode by 8 bytes.
Signed-off-by: Steven Whitehouse <swhiteho@...hat.com>
---
fs/gfs2/inode.c | 36 ++++++++++++++++--------------------
fs/gfs2/inode.h | 2 +-
fs/gfs2/ondisk.c | 4 ----
fs/gfs2/ops_inode.c | 38 +++++---------------------------------
include/linux/gfs2_ondisk.h | 2 --
5 files changed, 22 insertions(+), 60 deletions(-)
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 7ba05fc..a995919 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -51,17 +51,6 @@ void gfs2_inode_attr_in(struct gfs2_inod
struct gfs2_dinode_host *di = &ip->i_di;
inode->i_ino = ip->i_num.no_addr;
-
- switch (di->di_mode & S_IFMT) {
- case S_IFBLK:
- case S_IFCHR:
- inode->i_rdev = MKDEV(di->di_major, di->di_minor);
- break;
- default:
- inode->i_rdev = 0;
- break;
- };
-
inode->i_mode = di->di_mode;
inode->i_nlink = di->di_nlink;
inode->i_uid = di->di_uid;
@@ -222,6 +211,15 @@ static int gfs2_dinode_in(struct gfs2_in
return -ESTALE;
di->di_mode = be32_to_cpu(str->di_mode);
+ ip->i_inode.i_rdev = 0;
+ switch (di->di_mode & S_IFMT) {
+ case S_IFBLK:
+ case S_IFCHR:
+ ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
+ be32_to_cpu(str->di_minor));
+ break;
+ };
+
di->di_uid = be32_to_cpu(str->di_uid);
di->di_gid = be32_to_cpu(str->di_gid);
di->di_nlink = be32_to_cpu(str->di_nlink);
@@ -230,8 +228,6 @@ static int gfs2_dinode_in(struct gfs2_in
di->di_atime = be64_to_cpu(str->di_atime);
di->di_mtime = be64_to_cpu(str->di_mtime);
di->di_ctime = be64_to_cpu(str->di_ctime);
- di->di_major = be32_to_cpu(str->di_major);
- di->di_minor = be32_to_cpu(str->di_minor);
di->di_goal_meta = be64_to_cpu(str->di_goal_meta);
di->di_goal_data = be64_to_cpu(str->di_goal_data);
@@ -270,7 +266,6 @@ int gfs2_inode_refresh(struct gfs2_inode
}
error = gfs2_dinode_in(ip, dibh->b_data);
-
brelse(dibh);
ip->i_vn = ip->i_gl->gl_vn;
@@ -684,7 +679,7 @@ out:
static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
const struct gfs2_inum_host *inum, unsigned int mode,
unsigned int uid, unsigned int gid,
- const u64 *generation)
+ const u64 *generation, dev_t dev)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct gfs2_dinode *di;
@@ -705,7 +700,8 @@ static void init_dinode(struct gfs2_inod
di->di_size = cpu_to_be64(0);
di->di_blocks = cpu_to_be64(1);
di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(get_seconds());
- di->di_major = di->di_minor = cpu_to_be32(0);
+ di->di_major = cpu_to_be32(MAJOR(dev));
+ di->di_minor = cpu_to_be32(MINOR(dev));
di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
di->di_generation = cpu_to_be64(*generation);
di->di_flags = cpu_to_be32(0);
@@ -740,7 +736,7 @@ static void init_dinode(struct gfs2_inod
static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
unsigned int mode, const struct gfs2_inum_host *inum,
- const u64 *generation)
+ const u64 *generation, dev_t dev)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
unsigned int uid, gid;
@@ -761,7 +757,7 @@ static int make_dinode(struct gfs2_inode
if (error)
goto out_quota;
- init_dinode(dip, gl, inum, mode, uid, gid, generation);
+ init_dinode(dip, gl, inum, mode, uid, gid, generation, dev);
gfs2_quota_change(dip, +1, uid, gid);
gfs2_trans_end(sdp);
@@ -892,7 +888,7 @@ static int gfs2_security_init(struct gfs
*/
struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
- unsigned int mode)
+ unsigned int mode, dev_t dev)
{
struct inode *inode;
struct gfs2_inode *dip = ghs->gh_gl->gl_object;
@@ -950,7 +946,7 @@ struct inode *gfs2_createi(struct gfs2_h
goto fail_gunlock;
}
- error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation);
+ error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev);
if (error)
goto fail_gunlock2;
diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
index d699b92..33c9ea6 100644
--- a/fs/gfs2/inode.h
+++ b/fs/gfs2/inode.h
@@ -37,7 +37,7 @@ int gfs2_change_nlink(struct gfs2_inode
struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
int is_root, struct nameidata *nd);
struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
- unsigned int mode);
+ unsigned int mode, dev_t dev);
int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
struct gfs2_inode *ip);
int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c
index 4bc590e..60dd943 100644
--- a/fs/gfs2/ondisk.c
+++ b/fs/gfs2/ondisk.c
@@ -170,8 +170,6 @@ void gfs2_dinode_out(const struct gfs2_i
str->di_atime = cpu_to_be64(di->di_atime);
str->di_mtime = cpu_to_be64(di->di_mtime);
str->di_ctime = cpu_to_be64(di->di_ctime);
- str->di_major = cpu_to_be32(di->di_major);
- str->di_minor = cpu_to_be32(di->di_minor);
str->di_goal_meta = cpu_to_be64(di->di_goal_meta);
str->di_goal_data = cpu_to_be64(di->di_goal_data);
@@ -202,8 +200,6 @@ void gfs2_dinode_print(const struct gfs2
printk(KERN_INFO " di_atime = %lld\n", (long long)di->di_atime);
printk(KERN_INFO " di_mtime = %lld\n", (long long)di->di_mtime);
printk(KERN_INFO " di_ctime = %lld\n", (long long)di->di_ctime);
- pv(di, di_major, "%u");
- pv(di, di_minor, "%u");
printk(KERN_INFO " di_goal_meta = %llu\n", (unsigned long long)di->di_goal_meta);
printk(KERN_INFO " di_goal_data = %llu\n", (unsigned long long)di->di_goal_data);
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index b2c2fe6..c10b914 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -59,7 +59,7 @@ static int gfs2_create(struct inode *dir
gfs2_holder_init(dip->i_gl, 0, 0, ghs);
for (;;) {
- inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode);
+ inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode, 0);
if (!IS_ERR(inode)) {
gfs2_trans_end(sdp);
if (dip->i_alloc.al_rgd)
@@ -326,7 +326,7 @@ static int gfs2_symlink(struct inode *di
gfs2_holder_init(dip->i_gl, 0, 0, ghs);
- inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO);
+ inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO, 0);
if (IS_ERR(inode)) {
gfs2_holder_uninit(ghs);
return PTR_ERR(inode);
@@ -379,7 +379,7 @@ static int gfs2_mkdir(struct inode *dir,
gfs2_holder_init(dip->i_gl, 0, 0, ghs);
- inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode);
+ inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode, 0);
if (IS_ERR(inode)) {
gfs2_holder_uninit(ghs);
return PTR_ERR(inode);
@@ -504,47 +504,19 @@ out:
static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
dev_t dev)
{
- struct gfs2_inode *dip = GFS2_I(dir), *ip;
+ struct gfs2_inode *dip = GFS2_I(dir);
struct gfs2_sbd *sdp = GFS2_SB(dir);
struct gfs2_holder ghs[2];
struct inode *inode;
- struct buffer_head *dibh;
- u32 major = 0, minor = 0;
- int error;
-
- switch (mode & S_IFMT) {
- case S_IFBLK:
- case S_IFCHR:
- major = MAJOR(dev);
- minor = MINOR(dev);
- break;
- case S_IFIFO:
- case S_IFSOCK:
- break;
- default:
- return -EOPNOTSUPP;
- };
gfs2_holder_init(dip->i_gl, 0, 0, ghs);
- inode = gfs2_createi(ghs, &dentry->d_name, mode);
+ inode = gfs2_createi(ghs, &dentry->d_name, mode, dev);
if (IS_ERR(inode)) {
gfs2_holder_uninit(ghs);
return PTR_ERR(inode);
}
- ip = ghs[1].gh_gl->gl_object;
-
- ip->i_di.di_major = major;
- ip->i_di.di_minor = minor;
-
- error = gfs2_meta_inode_buffer(ip, &dibh);
-
- if (!gfs2_assert_withdraw(sdp, !error)) {
- gfs2_dinode_out(ip, dibh->b_data);
- brelse(dibh);
- }
-
gfs2_trans_end(sdp);
if (dip->i_alloc.al_rgd)
gfs2_inplace_release(dip);
diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h
index c0e76fc..5bcf895 100644
--- a/include/linux/gfs2_ondisk.h
+++ b/include/linux/gfs2_ondisk.h
@@ -331,8 +331,6 @@ struct gfs2_dinode_host {
__u64 di_atime; /* time last accessed */
__u64 di_mtime; /* time last modified */
__u64 di_ctime; /* time last changed */
- __u32 di_major; /* device major number */
- __u32 di_minor; /* device minor number */
/* This section varies from gfs1. Padding added to align with
* remainder of dinode
--
1.4.1
-
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