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authorJan Kara <jack@suse.cz>2005-06-23 22:01:04 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-24 00:05:20 -0700
commit1f54587bea84a35125c95e19b98c2f464c50871b (patch)
tree42f2467d6892be821271a2257e1259922bdafd45 /include/linux/ext3_jbd.h
parent4e5117ba0af4582b6ec9164874f719d7f3f1eb2b (diff)
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[PATCH] quota: ext3: Improve quota credit estimates
Use improved credits estimates for quota operations. Also reserve a space for a quota operation in a transaction only if filesystem was mounted with some quota options. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/ext3_jbd.h')
-rw-r--r--include/linux/ext3_jbd.h19
1 files changed, 11 insertions, 8 deletions
diff --git a/include/linux/ext3_jbd.h b/include/linux/ext3_jbd.h
index e8292af9033..c8307c02dd0 100644
--- a/include/linux/ext3_jbd.h
+++ b/include/linux/ext3_jbd.h
@@ -42,15 +42,15 @@
* superblock only gets updated once, of course, so don't bother
* counting that again for the quota updates. */
-#define EXT3_DATA_TRANS_BLOCKS (EXT3_SINGLEDATA_TRANS_BLOCKS + \
+#define EXT3_DATA_TRANS_BLOCKS(sb) (EXT3_SINGLEDATA_TRANS_BLOCKS + \
EXT3_XATTR_TRANS_BLOCKS - 2 + \
- 2*EXT3_QUOTA_TRANS_BLOCKS)
+ 2*EXT3_QUOTA_TRANS_BLOCKS(sb))
/* Delete operations potentially hit one directory's namespace plus an
* entire inode, plus arbitrary amounts of bitmap/indirection data. Be
* generous. We can grow the delete transaction later if necessary. */
-#define EXT3_DELETE_TRANS_BLOCKS (2 * EXT3_DATA_TRANS_BLOCKS + 64)
+#define EXT3_DELETE_TRANS_BLOCKS(sb) (2 * EXT3_DATA_TRANS_BLOCKS(sb) + 64)
/* Define an arbitrary limit for the amount of data we will anticipate
* writing to any given transaction. For unbounded transactions such as
@@ -74,14 +74,17 @@
#ifdef CONFIG_QUOTA
/* Amount of blocks needed for quota update - we know that the structure was
* allocated so we need to update only inode+data */
-#define EXT3_QUOTA_TRANS_BLOCKS 2
+#define EXT3_QUOTA_TRANS_BLOCKS(sb) (test_opt(sb, QUOTA) ? 2 : 0)
/* Amount of blocks needed for quota insert/delete - we do some block writes
* but inode, sb and group updates are done only once */
-#define EXT3_QUOTA_INIT_BLOCKS (DQUOT_MAX_WRITES*\
- (EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3)
+#define EXT3_QUOTA_INIT_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_INIT_ALLOC*\
+ (EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_INIT_REWRITE) : 0)
+#define EXT3_QUOTA_DEL_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_DEL_ALLOC*\
+ (EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_DEL_REWRITE) : 0)
#else
-#define EXT3_QUOTA_TRANS_BLOCKS 0
-#define EXT3_QUOTA_INIT_BLOCKS 0
+#define EXT3_QUOTA_TRANS_BLOCKS(sb) 0
+#define EXT3_QUOTA_INIT_BLOCKS(sb) 0
+#define EXT3_QUOTA_DEL_BLOCKS(sb) 0
#endif
int