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jbd2: revert "jbd2: add COW fields to struct jbd2_journal_handle" 

This reverts commit 93737456d6.

The cow-snapshots effort is no longer active, so remove these extra
fields to shrink down the handle structure.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Theodore Ts'o 2013-02-07 00:02:15 -05:00
parent 9fff24aa2c
commit 078d5039a1
1 changed files with 3 additions and 25 deletions
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28
include/linux/jbd2.h
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@ -397,35 +397,13 @@ struct jbd2_journal_handle
int h_err;
/* Flags [no locking] */
unsigned int h_sync:1; /* sync-on-close */
unsigned int h_jdata:1; /* force data journaling */
unsigned int h_aborted:1; /* fatal error on handle */
unsigned int h_cowing:1; /* COWing block to snapshot */
/* Number of buffers requested by user:
* (before adding the COW credits factor) */
unsigned int h_base_credits:14;
/* Number of buffers the user is allowed to dirty:
* (counts only buffers dirtied when !h_cowing) */
unsigned int h_user_credits:14;
unsigned int h_sync: 1; /* sync-on-close */
unsigned int h_jdata: 1; /* force data journaling */
unsigned int h_aborted: 1; /* fatal error on handle */
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map h_lockdep_map;
#endif
#ifdef CONFIG_JBD2_DEBUG
/* COW debugging counters: */
unsigned int h_cow_moved; /* blocks moved to snapshot */
unsigned int h_cow_copied; /* blocks copied to snapshot */
unsigned int h_cow_ok_jh; /* blocks already COWed during current
transaction */
unsigned int h_cow_ok_bitmap; /* blocks not set in COW bitmap */
unsigned int h_cow_ok_mapped;/* blocks already mapped in snapshot */
unsigned int h_cow_bitmaps; /* COW bitmaps created */
unsigned int h_cow_excluded; /* blocks set in exclude bitmap */
#endif
};