[PATCH 39/75] sysfs: Move all of inode initialization into sysfs_init_inode

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From: Greg Kroah-Hartman
Date: Friday, October 12, 2007 - 3:16 pm

From: Eric W. Biederman <ebiederm@xmission.com>

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 fs/sysfs/dir.c   |   37 -------------------------------------
 fs/sysfs/inode.c |   48 +++++++++++++++++++++++++++++++++++++++++++++---
 fs/sysfs/mount.c |    5 -----
 3 files changed, 45 insertions(+), 45 deletions(-)

diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 54ca4bc..5a70a93 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -748,24 +748,12 @@ int sysfs_create_dir(struct kobject * kobj)
 	return error;
 }
 
-static int sysfs_count_nlink(struct sysfs_dirent *sd)
-{
-	struct sysfs_dirent *child;
-	int nr = 0;
-
-	for (child = sd->s_children; child; child = child->s_sibling)
-		if (sysfs_type(child) == SYSFS_DIR)
-			nr++;
-	return nr + 2;
-}
-
 static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
 				struct nameidata *nd)
 {
 	struct dentry *ret = NULL;
 	struct sysfs_dirent *parent_sd = dentry->d_parent->d_fsdata;
 	struct sysfs_dirent *sd;
-	struct bin_attribute *bin_attr;
 	struct inode *inode;
 
 	mutex_lock(&sysfs_mutex);
@@ -785,31 +773,6 @@ static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
 		goto out_unlock;
 	}
 
-	if (inode->i_state & I_NEW) {
-		/* initialize inode according to type */
-		switch (sysfs_type(sd)) {
-		case SYSFS_DIR:
-			inode->i_op = &sysfs_dir_inode_operations;
-			inode->i_fop = &sysfs_dir_operations;
-			inode->i_nlink = sysfs_count_nlink(sd);
-			break;
-		case SYSFS_KOBJ_ATTR:
-			inode->i_size = PAGE_SIZE;
-			inode->i_fop = &sysfs_file_operations;
-			break;
-		case SYSFS_KOBJ_BIN_ATTR:
-			bin_attr = sd->s_elem.bin_attr.bin_attr;
-			inode->i_size = bin_attr->size;
-			inode->i_fop = &bin_fops;
-			break;
-		case SYSFS_KOBJ_LINK:
-			inode->i_op = &sysfs_symlink_inode_operations;
-			break;
-		default:
-			BUG();
-		}
-	}
-
 	sysfs_instantiate(dentry, inode);
 	sysfs_attach_dentry(sd, dentry);
 
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index e22db6c..200e1bf 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -122,8 +122,22 @@ static inline void set_inode_attr(struct inode * inode, struct iattr * iattr)
  */
 static struct lock_class_key sysfs_inode_imutex_key;
 
+static int sysfs_count_nlink(struct sysfs_dirent *sd)
+{
+	struct sysfs_dirent *child;
+	int nr = 0;
+
+	for (child = sd->s_children; child; child = child->s_sibling)
+		if (sysfs_type(child) == SYSFS_DIR)
+			nr++;
+
+	return nr + 2;
+}
+
 static void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode)
 {
+	struct bin_attribute *bin_attr;
+
 	inode->i_blocks = 0;
 	inode->i_mapping->a_ops = &sysfs_aops;
 	inode->i_mapping->backing_dev_info = &sysfs_backing_dev_info;
@@ -139,6 +153,37 @@ static void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode)
 		set_inode_attr(inode, sd->s_iattr);
 	} else
 		set_default_inode_attr(inode, sd->s_mode);
+
+
+	/* initialize inode according to type */
+	switch (sysfs_type(sd)) {
+	case SYSFS_ROOT:
+		inode->i_op = &sysfs_dir_inode_operations;
+		inode->i_fop = &sysfs_dir_operations;
+		inc_nlink(inode); /* directory, account for "." */
+		break;
+	case SYSFS_DIR:
+		inode->i_op = &sysfs_dir_inode_operations;
+		inode->i_fop = &sysfs_dir_operations;
+		inode->i_nlink = sysfs_count_nlink(sd);
+		break;
+	case SYSFS_KOBJ_ATTR:
+		inode->i_size = PAGE_SIZE;
+		inode->i_fop = &sysfs_file_operations;
+		break;
+	case SYSFS_KOBJ_BIN_ATTR:
+		bin_attr = sd->s_elem.bin_attr.bin_attr;
+		inode->i_size = bin_attr->size;
+		inode->i_fop = &bin_fops;
+		break;
+	case SYSFS_KOBJ_LINK:
+		inode->i_op = &sysfs_symlink_inode_operations;
+		break;
+	default:
+		BUG();
+	}
+
+	unlock_new_inode(inode);
 }
 
 /**
@@ -180,9 +225,6 @@ void sysfs_instantiate(struct dentry *dentry, struct inode *inode)
 {
 	BUG_ON(!dentry || dentry->d_inode);
 
-	if (inode->i_state & I_NEW)
-		unlock_new_inode(inode);
-
 	d_instantiate(dentry, inode);
 }
 
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index 119f39d..92f407f 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -49,11 +49,6 @@ static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
 		return -ENOMEM;
 	}
 
-	inode->i_op = &sysfs_dir_inode_operations;
-	inode->i_fop = &sysfs_dir_operations;
-	inc_nlink(inode); /* directory, account for "." */
-	unlock_new_inode(inode);
-
 	/* instantiate and link root dentry */
 	root = d_alloc_root(inode);
 	if (!root) {
-- 
1.5.3.4

-
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Messages in current thread:
[PATCH 02/75] HOWTO: update ja_JP/HOWTO with latest changes, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 03/75] Driver core: make sysfs uevent-attributes static, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 04/75] Driver core: change add_uevent_var to use a ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 05/75] Driver core: add CONFIG_UEVENT_HELPER_PATH, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 06/75] Driver core: remove subsys_set_kset, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 07/75] Driver core: remove kset_set_kset_s, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 08/75] Driver core: remove subsys_put(), Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 09/75] Driver core: remove subsys_get(), Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 10/75] Driver core: remove put_bus(), Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 11/75] Driver core: remove get_bus(), Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 12/75] kobjects: fix up improper use of the kobject ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 13/75] cdev: remove unneeded setting of cdev names, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 14/75] Drivers: clean up direct setting of the name ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 15/75] kobject: remove the static array for the name, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 16/75] Driver core: clean up removed functions from ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 17/75] debugfs: helper for decimal challenged, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 18/75] sysfs/file.c - use mutex instead of semaphore, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 19/75] sysfs: cleanup semaphore.h, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 20/75] sysfs: Remove first pass at shadow directory ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 21/75] sysfs: cosmetic changes in sysfs_lookup(), Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 22/75] sysfs: simplify sysfs_rename_dir(), Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 23/75] sysfs: make sysfs_add/remove_one() call link ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 24/75] sysfs: make sysfs_add_one() automatically ch ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 25/75] sysfs: make sysfs_addrm_finish() return void, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 26/75] dmi-id: Use dynamic sysfs attributes, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 27/75] dmi-id: Possible cleanup, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 28/75] Convert from class_device to device for driv ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 29/75] Convert from class_device to device in drive ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 30/75] Driver core: exclude kobject_uevent.c for !C ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 31/75] Driver core: add uevent file for bus and driver, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 32/75] Driver core: kerneldoc - kobject_uevent_env ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 33/75] Fix Firmware class name collision, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 34/75] drivers/base/power/: make 2 functions static, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 35/75] sysfs: Fix typos in fs/sysfs/file.c, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 36/75] sysdev: remove global sysdev drivers list, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 37/75] Driver core: Make platform_device.id an int, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 38/75] sysfs: fix i_mutex locking in sysfs_get_dentry(), Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 39/75] sysfs: Move all of inode initialization into ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 40/75] sysfs: Remove sysfs_instantiate, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 41/75] sysfs: Use kill_anon_super, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 42/75] sysfs: Make sysfs_mount static, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 43/75] sysfs: In sysfs_lookup don't open code sysfs ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 44/75] sysfs: Simplify readdir., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 45/75] sysfs: Rewrite sysfs_drop_dentry., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 46/75] sysfs: Introduce sysfs_rename_mutex, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 47/75] sysfs: simply sysfs_get_dentry, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 48/75] sysfs: Remove s_dentry, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 49/75] sysfs: Rewrite rename in terms of sysfs dirents, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 50/75] sysfs: Rewrite sysfs_move_dir in terms of sy ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 51/75] PTY: add kernel parameter to overwrite legac ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 52/75] sysfs: spit a warning to users when they try ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 53/75] sysfs: fix comments of sysfs_add/remove_one(), Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 54/75] sysfs: fix sysfs_chmod_file() such that it u ..., Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 55/75] sysfs: clean up header files, Greg Kroah-Hartman, (Fri Oct 12, 3:16 pm)
[PATCH 56/75] sysfs: kill sysfs_update_file(), Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 57/75] sysfs: reposition sysfs_dirent-&gt;s_mode., Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 58/75] sysfs: kill unnecessary sysfs_get() in open ..., Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 59/75] sysfs: kill unnecessary NULL pointer check i ..., Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 60/75] sysfs: make bin attr open get active referen ..., Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 61/75] sysfs: make s_elem an anonymous union, Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 62/75] sysfs: open code sysfs_attach_dentry(), Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 63/75] sysfs: make sysfs_root a regular directory d ..., Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 65/75] sysfs: implement sysfs_open_dirent, Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 66/75] sysfs: move sysfs file poll implementation t ..., Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 67/75] driver core: remove subsystem_init(), Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 68/75] Driver core: rename ktype_class, Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 69/75] Driver core: rename ktype_device, Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 70/75] Driver core: rename ktype_driver, Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 71/75] Driver core: rename ktype_edd and ktype_efivar, Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 72/75] kset: add some kerneldoc to help describe wh ..., Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 73/75] kobject: update the copyrights, Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 74/75] sysfs: add copyrights, Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)
[PATCH 75/75] PM: merge device power-management source files, Greg Kroah-Hartman, (Fri Oct 12, 3:17 pm)