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Commit 087387f9 authored by Akinobu Mita's avatar Akinobu Mita Committed by Dave Kleikamp
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[PATCH] JFS: return correct error when i-node allocation failed 



I have seen confusing behavior on JFS when I injected many intentional
slab allocation errors. The cp command failed with no disk space error
with enough disk space.

This patch makes:

- change the return value in case slab allocation failures happen
  from -ENOSPC to -ENOMEM

- ialloc() return error code so that the caller can know the reason
  of failures

Signed-off-by: default avatarAkinobu Mita <mita@miraclelinux.com>
Signed-off-by: default avatarDave Kleikamp <shaggy@austin.ibm.com>
(cherry picked from 2b46f77976f798f3fe800809a1d0ed38763c71c8 commit)
parent 2a6968a9

fs/jfs/jfs_dtree.c

+2 −2
Original line number Diff line number Diff line
@@ -3780,13 +3780,13 @@ static int ciGetLeafPrefixKey(dtpage_t * lp, int li, dtpage_t * rp, 
	lkey.name = (wchar_t *) kmalloc((JFS_NAME_MAX + 1) * sizeof(wchar_t),

					GFP_KERNEL);

	if (lkey.name == NULL)

		return -ENOSPC;

		return -ENOMEM;



	rkey.name = (wchar_t *) kmalloc((JFS_NAME_MAX + 1) * sizeof(wchar_t),

					GFP_KERNEL);

	if (rkey.name == NULL) {

		kfree(lkey.name);

		return -ENOSPC;

		return -ENOMEM;

	}



	/* get left and right key */

fs/jfs/jfs_inode.c

+5 −4
Original line number Diff line number Diff line
@@ -61,7 +61,7 @@ struct inode *ialloc(struct inode *parent, umode_t mode) 
	inode = new_inode(sb);

	if (!inode) {

		jfs_warn("ialloc: new_inode returned NULL!");

		return inode;

		return ERR_PTR(-ENOMEM);

	}



	jfs_inode = JFS_IP(inode);
@@ -69,9 +69,10 @@ struct inode *ialloc(struct inode *parent, umode_t mode) 
	rc = diAlloc(parent, S_ISDIR(mode), inode);

	if (rc) {

		jfs_warn("ialloc: diAlloc returned %d!", rc);

		if (rc == -EIO)

			make_bad_inode(inode);

		iput(inode);

		return NULL;

		return ERR_PTR(rc);

	}



	inode->i_uid = current->fsuid;
@@ -97,7 +98,7 @@ struct inode *ialloc(struct inode *parent, umode_t mode) 
		inode->i_flags |= S_NOQUOTA;

		inode->i_nlink = 0;

		iput(inode);

		return NULL;

		return ERR_PTR(-EDQUOT);

	}



	inode->i_mode = mode;

fs/jfs/jfs_unicode.c

+1 −1
Original line number Diff line number Diff line
@@ -124,7 +124,7 @@ int get_UCSname(struct component_name * uniName, struct dentry *dentry) 
	    kmalloc((length + 1) * sizeof(wchar_t), GFP_NOFS);



	if (uniName->name == NULL)

		return -ENOSPC;

		return -ENOMEM;



	uniName->namlen = jfs_strtoUCS(uniName->name, dentry->d_name.name,

				       length, nls_tab);

fs/jfs/namei.c

+8 −9
Original line number Diff line number Diff line
@@ -97,8 +97,8 @@ static int jfs_create(struct inode *dip, struct dentry *dentry, int mode, 
	 * begin the transaction before we search the directory.

	 */

	ip = ialloc(dip, mode);

	if (ip == NULL) {

		rc = -ENOSPC;

	if (IS_ERR(ip)) {

		rc = PTR_ERR(ip);

		goto out2;

	}
@@ -231,8 +231,8 @@ static int jfs_mkdir(struct inode *dip, struct dentry *dentry, int mode) 
	 * begin the transaction before we search the directory.

	 */

	ip = ialloc(dip, S_IFDIR | mode);

	if (ip == NULL) {

		rc = -ENOSPC;

	if (IS_ERR(ip)) {

		rc = PTR_ERR(ip);

		goto out2;

	}
@@ -906,8 +906,8 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry, 
	 * (iAlloc() returns new, locked inode)

	 */

	ip = ialloc(dip, S_IFLNK | 0777);

	if (ip == NULL) {

		rc = -ENOSPC;

	if (IS_ERR(ip)) {

		rc = PTR_ERR(ip);

		goto out2;

	}
@@ -978,7 +978,6 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry, 
		xlen = xsize >> JFS_SBI(sb)->l2bsize;

		if ((rc = xtInsert(tid, ip, 0, 0, xlen, &xaddr, 0))) {

			txAbort(tid, 0);

			rc = -ENOSPC;

			goto out3;

		}

		extent = xaddr;
@@ -1350,8 +1349,8 @@ static int jfs_mknod(struct inode *dir, struct dentry *dentry, 
		goto out;



	ip = ialloc(dir, mode);

	if (ip == NULL) {

		rc = -ENOSPC;

	if (IS_ERR(ip)) {

		rc = PTR_ERR(ip);

		goto out1;

	}

	jfs_ip = JFS_IP(ip);

fs/jfs/super.c

+1 −1
Original line number Diff line number Diff line
@@ -422,7 +422,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) 


	sbi = kzalloc(sizeof (struct jfs_sb_info), GFP_KERNEL);

	if (!sbi)

		return -ENOSPC;

		return -ENOMEM;

	sb->s_fs_info = sbi;

	sbi->sb = sb;

	sbi->uid = sbi->gid = sbi->umask = -1;