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[PATCH] quota: reiserfs: improve quota credit estimates

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Use improved credits estimates for quota operations.  Also reserve space
for a quota operation in a transaction only if filesystem was mounted with
some quota option.

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 22:01:06 -07:00
committed by Linus Torvalds
parent 1f54587bea
commit 556a2a45bc
6 changed files with 58 additions and 34 deletions
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35
fs/reiserfs/super.c
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@ -866,8 +866,9 @@ static int reiserfs_parse_options (struct super_block * s, char * options, /* st
{"jdev", .arg_required = 'j', .values = NULL},
{"nolargeio", .arg_required = 'w', .values = NULL},
{"commit", .arg_required = 'c', .values = NULL},
{"usrquota",},
{"grpquota",},
{"usrquota", .setmask = 1<<REISERFS_QUOTA},
{"grpquota", .setmask = 1<<REISERFS_QUOTA},
{"noquota", .clrmask = 1<<REISERFS_QUOTA},
{"errors", .arg_required = 'e', .values = error_actions},
{"usrjquota", .arg_required = 'u'|(1<<REISERFS_OPT_ALLOWEMPTY), .values = NULL},
{"grpjquota", .arg_required = 'g'|(1<<REISERFS_OPT_ALLOWEMPTY), .values = NULL},
@ -964,6 +965,7 @@ static int reiserfs_parse_options (struct super_block * s, char * options, /* st
return 0;
}
strcpy(REISERFS_SB(s)->s_qf_names[qtype], arg);
*mount_options |= 1<<REISERFS_QUOTA;
}
else {
if (REISERFS_SB(s)->s_qf_names[qtype]) {
@ -995,7 +997,13 @@ static int reiserfs_parse_options (struct super_block * s, char * options, /* st
reiserfs_warning(s, "reiserfs_parse_options: journalled quota format not specified.");
return 0;
}
/* This checking is not precise wrt the quota type but for our purposes it is sufficient */
if (!(*mount_options & (1<<REISERFS_QUOTA)) && sb_any_quota_enabled(s)) {
reiserfs_warning(s, "reiserfs_parse_options: quota options must be present when quota is turned on.");
return 0;
}
#endif
return 1;
}
@ -1105,6 +1113,7 @@ static int reiserfs_remount (struct super_block * s, int * mount_flags, char * a
safe_mask |= 1 << REISERFS_ERROR_RO;
safe_mask |= 1 << REISERFS_ERROR_CONTINUE;
safe_mask |= 1 << REISERFS_ERROR_PANIC;
safe_mask |= 1 << REISERFS_QUOTA;
/* Update the bitmask, taking care to keep
* the bits we're not allowed to change here */
@ -1845,11 +1854,11 @@ static int reiserfs_dquot_initialize(struct inode *inode, int type)
/* We may create quota structure so we need to reserve enough blocks */
reiserfs_write_lock(inode->i_sb);
ret = journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
ret = journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS(inode->i_sb));
if (ret)
goto out;
ret = dquot_initialize(inode, type);
err = journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
err = journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS(inode->i_sb));
if (!ret && err)
ret = err;
out:
@ -1864,11 +1873,11 @@ static int reiserfs_dquot_drop(struct inode *inode)
/* We may delete quota structure so we need to reserve enough blocks */
reiserfs_write_lock(inode->i_sb);
ret = journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
ret = journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_DEL_BLOCKS(inode->i_sb));
if (ret)
goto out;
ret = dquot_drop(inode);
err = journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
err = journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_DEL_BLOCKS(inode->i_sb));
if (!ret && err)
ret = err;
out:
@ -1882,11 +1891,11 @@ static int reiserfs_write_dquot(struct dquot *dquot)
int ret, err;
reiserfs_write_lock(dquot->dq_sb);
ret = journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS);
ret = journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
if (ret)
goto out;
ret = dquot_commit(dquot);
err = journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS);
err = journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
if (!ret && err)
ret = err;
out:
@ -1900,11 +1909,11 @@ static int reiserfs_acquire_dquot(struct dquot *dquot)
int ret, err;
reiserfs_write_lock(dquot->dq_sb);
ret = journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
ret = journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb));
if (ret)
goto out;
ret = dquot_acquire(dquot);
err = journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
err = journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb));
if (!ret && err)
ret = err;
out:
@ -1918,11 +1927,11 @@ static int reiserfs_release_dquot(struct dquot *dquot)
int ret, err;
reiserfs_write_lock(dquot->dq_sb);
ret = journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
ret = journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb));
if (ret)
goto out;
ret = dquot_release(dquot);
err = journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
err = journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb));
if (!ret && err)
ret = err;
out:
@ -1978,6 +1987,8 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id, ch
int err;
struct nameidata nd;
if (!(REISERFS_SB(sb)->s_mount_opt & (1<<REISERFS_QUOTA)))
return -EINVAL;
err = path_lookup(path, LOOKUP_FOLLOW, &nd);
if (err)
return err;