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authorTahsin Erdogan <tahsin@google.com>2017-05-25 00:24:07 +0200
committerTheodore Ts'o <tytso@mit.edu>2017-05-25 00:24:07 +0200
commitb8cb5a545c3dd8b975aad19ea020eabe0a888e8d (patch)
tree922a559467f7a606bede9f9892731ec414ea9dc4 /fs/quota
parentext4: remove redundant check for encrypted file on dio write path (diff)
downloadlinux-b8cb5a545c3dd8b975aad19ea020eabe0a888e8d.tar.xz
linux-b8cb5a545c3dd8b975aad19ea020eabe0a888e8d.zip
ext4: fix quota charging for shared xattr blocks
ext4_xattr_block_set() calls dquot_alloc_block() to charge for an xattr block when new references are made. However if dquot_initialize() hasn't been called on an inode, request for charging is effectively ignored because ext4_inode_info->i_dquot is not initialized yet. Add dquot_initialize() to call paths that lead to ext4_xattr_block_set(). Signed-off-by: Tahsin Erdogan <tahsin@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota')
-rw-r--r--fs/quota/dquot.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index ebf80c7739e1..48813aeaab80 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1512,6 +1512,22 @@ int dquot_initialize(struct inode *inode)
}
EXPORT_SYMBOL(dquot_initialize);
+bool dquot_initialize_needed(struct inode *inode)
+{
+ struct dquot **dquots;
+ int i;
+
+ if (!dquot_active(inode))
+ return false;
+
+ dquots = i_dquot(inode);
+ for (i = 0; i < MAXQUOTAS; i++)
+ if (!dquots[i] && sb_has_quota_active(inode->i_sb, i))
+ return true;
+ return false;
+}
+EXPORT_SYMBOL(dquot_initialize_needed);
+
/*
* Release all quotas referenced by inode.
*