Re: [PATCH] ext2: initialize quota info in ext2_xattr_set()

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On 6/26/20 11:19 AM, Chengguang Xu wrote:
In order to correctly account/limit space usage, should initialize
quota info before calling quota related functions.

How did you encounter the problem?
Any test case got hit?


Signed-off-by: Chengguang Xu <cgxu519@xxxxxxxxxxxx>

LGTM, feel free to add
Reviewed-by: Reviewed-by: Ritesh Harjani <riteshh@xxxxxxxxxxxxx>


---
  fs/ext2/xattr.c | 3 +++
  1 file changed, 3 insertions(+)

diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index 943cc469f42f..913e5c4921ec 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -437,6 +437,9 @@ ext2_xattr_set(struct inode *inode, int name_index, const char *name,
  	name_len = strlen(name);
  	if (name_len > 255 || value_len > sb->s_blocksize)
  		return -ERANGE;
+	error = dquot_initialize(inode);
+	if (error)
+		return error;
  	down_write(&EXT2_I(inode)->xattr_sem);
  	if (EXT2_I(inode)->i_file_acl) {
  		/* The inode already has an extended attribute block. */




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