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ocfs2: add necessary check in case sb_getblk() fails

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sb_getblk() may return an err, so add a check for bh.

[joseph.qi@huawei.com: also add a check after calling sb_getblk() in ocfs2_create_xattr_block()]
Signed-off-by: Rui Xiang <rui.xiang@huawei.com>
Reviewed-by: Jie Liu <jeff.liu@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rui Xiang 2013-11-12 15:06:55 -08:00 committed by Linus Torvalds
parent 7391a294b8
commit 58796207cf
2 changed files with 11 additions and 0 deletions
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5
fs/ocfs2/refcounttree.c
View File

@ -612,6 +612,11 @@ static int ocfs2_create_refcount_tree(struct inode *inode,
}
new_bh = sb_getblk(inode->i_sb, first_blkno);
if (!new_bh) {
ret = -ENOMEM;
mlog_errno(ret);
goto out_commit;
}
ocfs2_set_new_buffer_uptodate(&new_tree->rf_ci, new_bh);
ret = ocfs2_journal_access_rb(handle, &new_tree->rf_ci, new_bh,

6
fs/ocfs2/xattr.c
View File

@ -2864,6 +2864,12 @@ static int ocfs2_create_xattr_block(struct inode *inode,
}
new_bh = sb_getblk(inode->i_sb, first_blkno);
if (!new_bh) {
ret = -ENOMEM;
mlog_errno(ret);
goto end;
}
ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), new_bh);
ret = ocfs2_journal_access_xb(ctxt->handle, INODE_CACHE(inode),