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authorTheodore Ts'o <tytso@mit.edu>2013-02-10 00:23:03 +0400
committerTheodore Ts'o <tytso@mit.edu>2013-02-10 00:23:03 +0400
commit95eaefbdececae5e781d76d03fe7472a857c8c7a (patch)
treeabe337e1490ded4166cf4d26f97cd1fe856a84ab /fs/ext4/ext4_jbd2.h
parent64044abf05d0842a7fed30e102fa411a744c7d9f (diff)
downloadlinux-95eaefbdececae5e781d76d03fe7472a857c8c7a.tar.xz
ext4: fix the number of credits needed for acl ops with inline data
Operations which modify extended attributes may need extra journal credits if inline data is used, since there is a chance that some extended attributes may need to get pushed to an external attribute block. Changes to reflect this was made in xattr.c, but they were missed in fs/ext4/acl.c. To fix this, abstract the calculation of the number of credits needed for xattr operations to an inline function defined in ext4_jbd2.h, and use it in acl.c and xattr.c. Also move the function declarations used in inline.c from xattr.h (where they are non-obviously hidden, and caused problems since ext4_jbd2.h needs to use the function ext4_has_inline_data), and move them to ext4.h. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Tao Ma <boyu.mt@taobao.com> Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext4/ext4_jbd2.h')
-rw-r--r--fs/ext4/ext4_jbd2.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index c1fc2dca14ae..4c216b1bf20c 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -104,6 +104,20 @@
#define EXT4_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_INIT_BLOCKS(sb))
#define EXT4_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_DEL_BLOCKS(sb))
+static inline int ext4_jbd2_credits_xattr(struct inode *inode)
+{
+ int credits = EXT4_DATA_TRANS_BLOCKS(inode->i_sb);
+
+ /*
+ * In case of inline data, we may push out the data to a block,
+ * so we need to reserve credits for this eventuality
+ */
+ if (ext4_has_inline_data(inode))
+ credits += ext4_writepage_trans_blocks(inode) + 1;
+ return credits;
+}
+
+
/*
* Ext4 handle operation types -- for logging purposes
*/