quota: Push dqio_sem down to ->read_file_info()
Push down acquisition of dqio_sem into ->read_file_info() callback. This
is for consistency with other operations and it also allows us to get
rid of an ugliness in OCFS2.
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c
index 1829f6a..2eeedcc 100644
--- a/fs/ocfs2/quota_local.c
+++ b/fs/ocfs2/quota_local.c
@@ -691,9 +691,6 @@
struct ocfs2_quota_recovery *rec;
int locked = 0;
- /* We don't need the lock and we have to acquire quota file locks
- * which will later depend on this lock */
- up_read(&sb_dqopt(sb)->dqio_sem);
info->dqi_max_spc_limit = 0x7fffffffffffffffLL;
info->dqi_max_ino_limit = 0x7fffffffffffffffLL;
oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS);
@@ -772,7 +769,6 @@
goto out_err;
}
- down_read(&sb_dqopt(sb)->dqio_sem);
return 0;
out_err:
if (oinfo) {
@@ -786,7 +782,6 @@
kfree(oinfo);
}
brelse(bh);
- down_read(&sb_dqopt(sb)->dqio_sem);
return -1;
}
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 1e1ff97..5e77c4d 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2313,15 +2313,11 @@
dqopt->info[type].dqi_format = fmt;
dqopt->info[type].dqi_fmt_id = format_id;
INIT_LIST_HEAD(&dqopt->info[type].dqi_dirty_list);
- down_read(&dqopt->dqio_sem);
error = dqopt->ops[type]->read_file_info(sb, type);
- if (error < 0) {
- up_read(&dqopt->dqio_sem);
+ if (error < 0)
goto out_file_init;
- }
if (dqopt->flags & DQUOT_QUOTA_SYS_FILE)
dqopt->info[type].dqi_flags |= DQF_SYS_FILE;
- up_read(&dqopt->dqio_sem);
spin_lock(&dq_state_lock);
dqopt->flags |= dquot_state_flag(flags, type);
spin_unlock(&dq_state_lock);
diff --git a/fs/quota/quota_v1.c b/fs/quota/quota_v1.c
index fe68bf5..b2d8e04 100644
--- a/fs/quota/quota_v1.c
+++ b/fs/quota/quota_v1.c
@@ -161,6 +161,7 @@
struct v1_disk_dqblk dqblk;
int ret;
+ down_read(&dqopt->dqio_sem);
ret = sb->s_op->quota_read(sb, type, (char *)&dqblk,
sizeof(struct v1_disk_dqblk), v1_dqoff(0));
if (ret != sizeof(struct v1_disk_dqblk)) {
@@ -177,6 +178,7 @@
dqopt->info[type].dqi_bgrace =
dqblk.dqb_btime ? dqblk.dqb_btime : MAX_DQ_TIME;
out:
+ up_read(&dqopt->dqio_sem);
return ret;
}
diff --git a/fs/quota/quota_v2.c b/fs/quota/quota_v2.c
index 5e47012..373d7cf 100644
--- a/fs/quota/quota_v2.c
+++ b/fs/quota/quota_v2.c
@@ -90,29 +90,38 @@
{
struct v2_disk_dqinfo dinfo;
struct v2_disk_dqheader dqhead;
- struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct quota_info *dqopt = sb_dqopt(sb);
+ struct mem_dqinfo *info = &dqopt->info[type];
struct qtree_mem_dqinfo *qinfo;
ssize_t size;
unsigned int version;
+ int ret;
- if (!v2_read_header(sb, type, &dqhead))
- return -1;
+ down_read(&dqopt->dqio_sem);
+ if (!v2_read_header(sb, type, &dqhead)) {
+ ret = -1;
+ goto out;
+ }
version = le32_to_cpu(dqhead.dqh_version);
if ((info->dqi_fmt_id == QFMT_VFS_V0 && version != 0) ||
- (info->dqi_fmt_id == QFMT_VFS_V1 && version != 1))
- return -1;
+ (info->dqi_fmt_id == QFMT_VFS_V1 && version != 1)) {
+ ret = -1;
+ goto out;
+ }
size = sb->s_op->quota_read(sb, type, (char *)&dinfo,
sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF);
if (size != sizeof(struct v2_disk_dqinfo)) {
quota_error(sb, "Can't read info structure");
- return -1;
+ ret = -1;
+ goto out;
}
info->dqi_priv = kmalloc(sizeof(struct qtree_mem_dqinfo), GFP_NOFS);
if (!info->dqi_priv) {
printk(KERN_WARNING
"Not enough memory for quota information structure.\n");
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto out;
}
qinfo = info->dqi_priv;
if (version == 0) {
@@ -147,7 +156,10 @@
qinfo->dqi_entry_size = sizeof(struct v2r1_disk_dqblk);
qinfo->dqi_ops = &v2r1_qtree_ops;
}
- return 0;
+ ret = 0;
+out:
+ up_read(&dqopt->dqio_sem);
+ return ret;
}
/* Write information header to quota file */