From ee12b630687d510f6f4b6d4acdc4e267fd4adeda Mon Sep 17 00:00:00 2001 From: Mingming Cao Date: Tue, 19 Aug 2008 22:16:05 -0400 Subject: ext4: journal credits reservation fixes for extent file writepage This patch modified the writepage/write_begin credit calculation for extent files, to use the credits caculation helper function. The current calculation of how many index/leaf blocks should be accounted is too conservetive, it always considered the worse case, where the tree level is 5, and in the case of multiple chunk allocations, it always assumed no blocks were dirtied in common across the allocations. This path uses the accurate depth of the inode with some extras to calculate the index blocks, and also less conservative in the case of multiple allocation accounting. Signed-off-by: Mingming Cao Reviewed-by: Aneesh Kumar K.V Signed-off-by: "Theodore Ts'o" --- fs/ext4/migrate.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/ext4/migrate.c') diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c index b9e077ba07e..46fc0b5b12b 100644 --- a/fs/ext4/migrate.c +++ b/fs/ext4/migrate.c @@ -53,7 +53,8 @@ static int finish_range(handle_t *handle, struct inode *inode, * credit. But below we try to not accumalate too much * of them by restarting the journal. */ - needed = ext4_ext_calc_credits_for_insert(inode, path); + needed = ext4_ext_calc_credits_for_single_extent(inode, + lb->last_block - lb->first_block + 1, path); /* * Make sure the credit we accumalated is not really high -- cgit v1.2.3