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authorJan Kara <jack@suse.cz>2013-06-04 12:35:11 -0400
committerTheodore Ts'o <tytso@mit.edu>2013-06-04 12:35:11 -0400
commit8f7d89f36829b9061a14f9040cda1372f264c4fe (patch)
tree2864747255fb15044c376519c0cb10bb223e9361 /fs/ext4
parentf29fad72105287e6899d9128a9d494514f220e77 (diff)
downloadop-kernel-dev-8f7d89f36829b9061a14f9040cda1372f264c4fe.zip
op-kernel-dev-8f7d89f36829b9061a14f9040cda1372f264c4fe.tar.gz
jbd2: transaction reservation support
In some cases we cannot start a transaction because of locking constraints and passing started transaction into those places is not handy either because we could block transaction commit for too long. Transaction reservation is designed to solve these issues. It reserves a handle with given number of credits in the journal and the handle can be later attached to the running transaction without blocking on commit or checkpointing. Reserved handles do not block transaction commit in any way, they only reduce maximum size of the running transaction (because we have to always be prepared to accomodate request for attaching reserved handle). Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/ext4_jbd2.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
index 451eb40..bd25e78 100644
--- a/fs/ext4/ext4_jbd2.c
+++ b/fs/ext4/ext4_jbd2.c
@@ -62,7 +62,7 @@ handle_t *__ext4_journal_start_sb(struct super_block *sb, unsigned int line,
ext4_abort(sb, "Detected aborted journal");
return ERR_PTR(-EROFS);
}
- return jbd2__journal_start(journal, nblocks, GFP_NOFS, type, line);
+ return jbd2__journal_start(journal, nblocks, 0, GFP_NOFS, type, line);
}
int __ext4_journal_stop(const char *where, unsigned int line, handle_t *handle)
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