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jbd2: Fix buffer head leak when writing the commit block 

Also make sure the buffer heads are marked clean before submitting bh
for writing.  The previous code was marking the buffer head dirty,
which would have forced an unneeded write (and seek) to the journal
for no good reason.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2008-10-06 12:04:02 -04:00
parent ede86cc473
commit 45a90bfd90
1 changed files with 2 additions and 3 deletions
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5
fs/jbd2/commit.c
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@ -127,8 +127,7 @@ static int journal_submit_commit_record(journal_t *journal,
JBUFFER_TRACE(descriptor, "submit commit block");
lock_buffer(bh);
get_bh(bh);
set_buffer_dirty(bh);
clear_buffer_dirty(bh);
set_buffer_uptodate(bh);
bh->b_end_io = journal_end_buffer_io_sync;
@ -158,7 +157,7 @@ static int journal_submit_commit_record(journal_t *journal,
/* And try again, without the barrier */
lock_buffer(bh);
set_buffer_uptodate(bh);
set_buffer_dirty(bh);
clear_buffer_dirty(bh);
ret = submit_bh(WRITE, bh);
}
*cbh = bh;