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[GFS2] Clean up journaled data writing

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This patch cleans up the code for writing journaled data into the log.
It also removes the need to allocate a small "tag" structure for each
block written into the log. Instead we just keep count of the outstanding
I/O so that we can be sure that its all been written at the correct time.
Another result of this patch is that a number of ll_rw_block() calls
have become submit_bh() calls, closing some races at the same time.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse
2007-09-17 10:59:52 +01:00
parent 55c0c4ac0b
commit 16615be18c
10 changed files with 269 additions and 220 deletions
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9
fs/gfs2/incore.h
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@ -341,12 +341,6 @@ struct gfs2_quota_data {
unsigned long qd_last_touched;
};
struct gfs2_log_buf {
struct list_head lb_list;
struct buffer_head *lb_bh;
struct buffer_head *lb_real;
};
struct gfs2_trans {
unsigned long tr_ip;
@ -631,7 +625,8 @@ struct gfs2_sbd {
unsigned long sd_log_flush_time;
struct rw_semaphore sd_log_flush_lock;
struct list_head sd_log_flush_list;
atomic_t sd_log_in_flight;
wait_queue_head_t sd_log_flush_wait;
unsigned int sd_log_flush_head;
u64 sd_log_flush_wrapped;