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authorJan Kara <jack@suse.cz>2016-04-24 00:56:08 -0400
committerTheodore Ts'o <tytso@mit.edu>2016-04-24 00:56:08 -0400
commitee0876bc69ee8d24d524fb2e9e41e3682aaebb11 (patch)
tree4a3b6725cf029b704f47018ff8fbce41a84be1b3 /fs/ext4/ext4_jbd2.h
parent41617e1a8dec9fe082ba5dec26bacb154eb55482 (diff)
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ext4: do not ask jbd2 to write data for delalloc buffers
Currently we ask jbd2 to write all dirty allocated buffers before committing a transaction when doing writeback of delay allocated blocks. However this is unnecessary since we move all pages to writeback state before dropping a transaction handle and then submit all the necessary IO. We still need the transaction commit to wait for all the outstanding writeback before flushing disk caches during transaction commit to avoid data exposure issues though. Use the new jbd2 capability and ask it to only wait for outstanding writeback during transaction commit when writing back data in ext4_writepages(). Tested-by: "HUANG Weller (CM/ESW12-CN)" <Weller.Huang@cn.bosch.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4_jbd2.h')
-rw-r--r--fs/ext4/ext4_jbd2.h12
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index f1c940b38b30..09c1ef38cbe6 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -359,7 +359,8 @@ static inline int ext4_journal_force_commit(journal_t *journal)
return 0;
}
-static inline int ext4_jbd2_file_inode(handle_t *handle, struct inode *inode)
+static inline int ext4_jbd2_inode_add_write(handle_t *handle,
+ struct inode *inode)
{
if (ext4_handle_valid(handle))
return jbd2_journal_inode_add_write(handle,
@@ -367,6 +368,15 @@ static inline int ext4_jbd2_file_inode(handle_t *handle, struct inode *inode)
return 0;
}
+static inline int ext4_jbd2_inode_add_wait(handle_t *handle,
+ struct inode *inode)
+{
+ if (ext4_handle_valid(handle))
+ return jbd2_journal_inode_add_wait(handle,
+ EXT4_I(inode)->jinode);
+ return 0;
+}
+
static inline void ext4_update_inode_fsync_trans(handle_t *handle,
struct inode *inode,
int datasync)