[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>
diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c
index 133f5aa..3ac3826 100644
--- a/fs/ext3/acl.c
+++ b/fs/ext3/acl.c
@@ -393,7 +393,8 @@
int retries = 0;
retry:
- handle = ext3_journal_start(inode, EXT3_DATA_TRANS_BLOCKS);
+ handle = ext3_journal_start(inode,
+ EXT3_DATA_TRANS_BLOCKS(inode->i_sb));
if (IS_ERR(handle)) {
error = PTR_ERR(handle);
ext3_std_error(inode->i_sb, error);
@@ -503,7 +504,7 @@
acl = NULL;
retry:
- handle = ext3_journal_start(inode, EXT3_DATA_TRANS_BLOCKS);
+ handle = ext3_journal_start(inode, EXT3_DATA_TRANS_BLOCKS(inode->i_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
error = ext3_set_acl(handle, inode, type, acl);
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 0d5fa73..0b2db4f 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -128,7 +128,7 @@
if (needed > EXT3_MAX_TRANS_DATA)
needed = EXT3_MAX_TRANS_DATA;
- return EXT3_DATA_TRANS_BLOCKS + needed;
+ return EXT3_DATA_TRANS_BLOCKS(inode->i_sb) + needed;
}
/*
@@ -2763,7 +2763,8 @@
/* (user+group)*(old+new) structure, inode write (sb,
* inode block, ? - but truncate inode update has it) */
- handle = ext3_journal_start(inode, 4*EXT3_QUOTA_INIT_BLOCKS+3);
+ handle = ext3_journal_start(inode, 2*(EXT3_QUOTA_INIT_BLOCKS(inode->i_sb)+
+ EXT3_QUOTA_DEL_BLOCKS(inode->i_sb))+3);
if (IS_ERR(handle)) {
error = PTR_ERR(handle);
goto err_out;
@@ -2861,7 +2862,7 @@
#ifdef CONFIG_QUOTA
/* We know that structure was already allocated during DQUOT_INIT so
* we will be updating only the data blocks + inodes */
- ret += 2*EXT3_QUOTA_TRANS_BLOCKS;
+ ret += 2*EXT3_QUOTA_TRANS_BLOCKS(inode->i_sb);
#endif
return ret;
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 60e44e6d..50378d8 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -1645,9 +1645,9 @@
int err, retries = 0;
retry:
- handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
+ handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3 +
- 2*EXT3_QUOTA_INIT_BLOCKS);
+ 2*EXT3_QUOTA_INIT_BLOCKS(dir->i_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -1679,9 +1679,9 @@
return -EINVAL;
retry:
- handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
+ handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3 +
- 2*EXT3_QUOTA_INIT_BLOCKS);
+ 2*EXT3_QUOTA_INIT_BLOCKS(dir->i_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -1715,9 +1715,9 @@
return -EMLINK;
retry:
- handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
+ handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3 +
- 2*EXT3_QUOTA_INIT_BLOCKS);
+ 2*EXT3_QUOTA_INIT_BLOCKS(dir->i_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -2006,7 +2006,7 @@
/* Initialize quotas before so that eventual writes go in
* separate transaction */
DQUOT_INIT(dentry->d_inode);
- handle = ext3_journal_start(dir, EXT3_DELETE_TRANS_BLOCKS);
+ handle = ext3_journal_start(dir, EXT3_DELETE_TRANS_BLOCKS(dir->i_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -2065,7 +2065,7 @@
/* Initialize quotas before so that eventual writes go
* in separate transaction */
DQUOT_INIT(dentry->d_inode);
- handle = ext3_journal_start(dir, EXT3_DELETE_TRANS_BLOCKS);
+ handle = ext3_journal_start(dir, EXT3_DELETE_TRANS_BLOCKS(dir->i_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -2120,9 +2120,9 @@
return -ENAMETOOLONG;
retry:
- handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
+ handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
EXT3_INDEX_EXTRA_TRANS_BLOCKS + 5 +
- 2*EXT3_QUOTA_INIT_BLOCKS);
+ 2*EXT3_QUOTA_INIT_BLOCKS(dir->i_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -2174,7 +2174,7 @@
return -EMLINK;
retry:
- handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
+ handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
EXT3_INDEX_EXTRA_TRANS_BLOCKS);
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -2216,7 +2216,8 @@
* in separate transaction */
if (new_dentry->d_inode)
DQUOT_INIT(new_dentry->d_inode);
- handle = ext3_journal_start(old_dir, 2 * EXT3_DATA_TRANS_BLOCKS +
+ handle = ext3_journal_start(old_dir, 2 *
+ EXT3_DATA_TRANS_BLOCKS(old_dir->i_sb) +
EXT3_INDEX_EXTRA_TRANS_BLOCKS + 2);
if (IS_ERR(handle))
return PTR_ERR(handle);
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 9630fbf..b4b3e8a 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -589,7 +589,7 @@
Opt_commit, Opt_journal_update, Opt_journal_inum,
Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
- Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0,
+ Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
Opt_ignore, Opt_barrier, Opt_err, Opt_resize,
};
@@ -634,10 +634,10 @@
{Opt_grpjquota, "grpjquota=%s"},
{Opt_jqfmt_vfsold, "jqfmt=vfsold"},
{Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
- {Opt_ignore, "grpquota"},
- {Opt_ignore, "noquota"},
- {Opt_ignore, "quota"},
- {Opt_ignore, "usrquota"},
+ {Opt_quota, "grpquota"},
+ {Opt_noquota, "noquota"},
+ {Opt_quota, "quota"},
+ {Opt_quota, "usrquota"},
{Opt_barrier, "barrier=%u"},
{Opt_err, NULL},
{Opt_resize, "resize"},
@@ -876,6 +876,7 @@
sbi->s_qf_names[qtype] = NULL;
return 0;
}
+ set_opt(sbi->s_mount_opt, QUOTA);
break;
case Opt_offusrjquota:
qtype = USRQUOTA;
@@ -898,6 +899,17 @@
case Opt_jqfmt_vfsv0:
sbi->s_jquota_fmt = QFMT_VFS_V0;
break;
+ case Opt_quota:
+ set_opt(sbi->s_mount_opt, QUOTA);
+ break;
+ case Opt_noquota:
+ if (sb_any_quota_enabled(sb)) {
+ printk(KERN_ERR "EXT3-fs: Cannot change quota "
+ "options when quota turned on.\n");
+ return 0;
+ }
+ clear_opt(sbi->s_mount_opt, QUOTA);
+ break;
#else
case Opt_usrjquota:
case Opt_grpjquota:
@@ -909,6 +921,9 @@
"EXT3-fs: journalled quota options not "
"supported.\n");
break;
+ case Opt_quota:
+ case Opt_noquota:
+ break;
#endif
case Opt_abort:
set_opt(sbi->s_mount_opt, ABORT);
@@ -2238,7 +2253,7 @@
int ret, err;
/* We may create quota structure so we need to reserve enough blocks */
- handle = ext3_journal_start(inode, 2*EXT3_QUOTA_INIT_BLOCKS);
+ handle = ext3_journal_start(inode, 2*EXT3_QUOTA_INIT_BLOCKS(inode->i_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_initialize(inode, type);
@@ -2254,7 +2269,7 @@
int ret, err;
/* We may delete quota structure so we need to reserve enough blocks */
- handle = ext3_journal_start(inode, 2*EXT3_QUOTA_INIT_BLOCKS);
+ handle = ext3_journal_start(inode, 2*EXT3_QUOTA_DEL_BLOCKS(inode->i_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_drop(inode);
@@ -2272,7 +2287,7 @@
inode = dquot_to_inode(dquot);
handle = ext3_journal_start(inode,
- EXT3_QUOTA_TRANS_BLOCKS);
+ EXT3_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_commit(dquot);
@@ -2288,7 +2303,7 @@
handle_t *handle;
handle = ext3_journal_start(dquot_to_inode(dquot),
- EXT3_QUOTA_INIT_BLOCKS);
+ EXT3_QUOTA_INIT_BLOCKS(dquot->dq_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_acquire(dquot);
@@ -2304,7 +2319,7 @@
handle_t *handle;
handle = ext3_journal_start(dquot_to_inode(dquot),
- EXT3_QUOTA_INIT_BLOCKS);
+ EXT3_QUOTA_DEL_BLOCKS(dquot->dq_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_release(dquot);
@@ -2361,6 +2376,8 @@
int err;
struct nameidata nd;
+ if (!test_opt(sb, QUOTA))
+ return -EINVAL;
/* Not journalling quota? */
if (!EXT3_SB(sb)->s_qf_names[USRQUOTA] &&
!EXT3_SB(sb)->s_qf_names[GRPQUOTA])
diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c
index 4cbc6d0..3f9dfa6 100644
--- a/fs/ext3/xattr.c
+++ b/fs/ext3/xattr.c
@@ -1044,7 +1044,7 @@
int error, retries = 0;
retry:
- handle = ext3_journal_start(inode, EXT3_DATA_TRANS_BLOCKS);
+ handle = ext3_journal_start(inode, EXT3_DATA_TRANS_BLOCKS(inode->i_sb));
if (IS_ERR(handle)) {
error = PTR_ERR(handle);
} else {
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index 74ad317..4b6e1ab 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -358,6 +358,7 @@
#define EXT3_MOUNT_RESERVATION 0x10000 /* Preallocation */
#define EXT3_MOUNT_BARRIER 0x20000 /* Use block barriers */
#define EXT3_MOUNT_NOBH 0x40000 /* No bufferheads */
+#define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */
/* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */
#ifndef _LINUX_EXT2_FS_H
diff --git a/include/linux/ext3_jbd.h b/include/linux/ext3_jbd.h
index e8292af..c8307c0 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
