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[PATCH] quota: improve credits estimates

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Improve estimates on the number of needed credits for quota transaction.
Now we distinguish blocks that might need to be allocated and blocks that
only need to be rewritten.  Also we distinguish deleting of a quota
structure and creating of a new one.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan Kara
2005-06-23 22:01:03 -07:00
committed by Linus Torvalds
parent bd6a1f16ff
commit 4e5117ba0a
3 changed files with 17 additions and 2 deletions
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7
include/linux/quota.h
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@ -138,8 +138,11 @@ struct if_dqinfo {
#include <linux/dqblk_v2.h>
/* Maximal numbers of writes for quota operation (insert/delete/update)
* (over all formats) - info block, 4 pointer blocks, data block */
#define DQUOT_MAX_WRITES 6
* (over VFS all formats) */
#define DQUOT_INIT_ALLOC max(V1_INIT_ALLOC, V2_INIT_ALLOC)
#define DQUOT_INIT_REWRITE max(V1_INIT_REWRITE, V2_INIT_REWRITE)
#define DQUOT_DEL_ALLOC max(V1_DEL_ALLOC, V2_DEL_ALLOC)
#define DQUOT_DEL_REWRITE max(V1_DEL_REWRITE, V2_DEL_REWRITE)
/*
* Data for one user/group kept in memory