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authorMingming Cao <cmm@us.ibm.com>2008-08-19 22:16:05 -0400
committerTheodore Ts'o <tytso@mit.edu>2008-08-19 22:16:05 -0400
commitee12b630687d510f6f4b6d4acdc4e267fd4adeda (patch)
tree8dd253073c5e811751bf1bb479fb03f772e42406 /fs/ext4/migrate.c
parenta02908f19c819aeec5e3dcf238adaa6deddd70b0 (diff)
downloadop-kernel-dev-ee12b630687d510f6f4b6d4acdc4e267fd4adeda.zip
op-kernel-dev-ee12b630687d510f6f4b6d4acdc4e267fd4adeda.tar.gz
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 <cmm@us.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/migrate.c')
-rw-r--r--fs/ext4/migrate.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index b9e077b..46fc0b5 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
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