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authorAl Viro <viro@zeniv.linux.org.uk>2010-07-26 12:06:00 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2010-10-29 04:16:48 -0400
commite5a0726a953daf224ae42bcf5edaa64f71b4e8a7 (patch)
tree0f0be6f8e0b2324b5e29ac959837ab470afa0053 /fs/logfs
parent7d945a3aa7608f68dba04083d3421e0b43052660 (diff)
downloadlinux-e5a0726a953daf224ae42bcf5edaa64f71b4e8a7.tar.bz2
logfs: fix a leak in get_sb
a) switch ->put_device() to logfs_super * b) actually call it on early failures in logfs_get_sb_device() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/logfs')
-rw-r--r--fs/logfs/dev_bdev.c4
-rw-r--r--fs/logfs/dev_mtd.c4
-rw-r--r--fs/logfs/logfs.h3
-rw-r--r--fs/logfs/super.c4
4 files changed, 8 insertions, 7 deletions
diff --git a/fs/logfs/dev_bdev.c b/fs/logfs/dev_bdev.c
index 223b673dcc7b..92ca6fbe09bd 100644
--- a/fs/logfs/dev_bdev.c
+++ b/fs/logfs/dev_bdev.c
@@ -298,9 +298,9 @@ static int bdev_write_sb(struct super_block *sb, struct page *page)
return sync_request(page, bdev, WRITE);
}
-static void bdev_put_device(struct super_block *sb)
+static void bdev_put_device(struct logfs_super *s)
{
- close_bdev_exclusive(logfs_super(sb)->s_bdev, FMODE_READ|FMODE_WRITE);
+ close_bdev_exclusive(s->s_bdev, FMODE_READ|FMODE_WRITE);
}
static int bdev_can_write_buf(struct super_block *sb, u64 ofs)
diff --git a/fs/logfs/dev_mtd.c b/fs/logfs/dev_mtd.c
index 9e3dbe3712ae..7466e9dcc8c5 100644
--- a/fs/logfs/dev_mtd.c
+++ b/fs/logfs/dev_mtd.c
@@ -230,9 +230,9 @@ static void mtd_writeseg(struct super_block *sb, u64 ofs, size_t len)
__mtd_writeseg(sb, ofs, ofs >> PAGE_SHIFT, len >> PAGE_SHIFT);
}
-static void mtd_put_device(struct super_block *sb)
+static void mtd_put_device(struct logfs_super *s)
{
- put_mtd_device(logfs_super(sb)->s_mtd);
+ put_mtd_device(s->s_mtd);
}
static int mtd_can_write_buf(struct super_block *sb, u64 ofs)
diff --git a/fs/logfs/logfs.h b/fs/logfs/logfs.h
index 5d2e66b48290..446c0f12d899 100644
--- a/fs/logfs/logfs.h
+++ b/fs/logfs/logfs.h
@@ -136,6 +136,7 @@ struct logfs_area_ops {
int (*erase_segment)(struct logfs_area *area);
};
+struct logfs_super; /* forward */
/**
* struct logfs_device_ops - device access operations
*
@@ -156,7 +157,7 @@ struct logfs_device_ops {
int ensure_write);
int (*can_write_buf)(struct super_block *sb, u64 ofs);
void (*sync)(struct super_block *sb);
- void (*put_device)(struct super_block *sb);
+ void (*put_device)(struct logfs_super *s);
};
/**
diff --git a/fs/logfs/super.c b/fs/logfs/super.c
index f57a150b4779..f07d40e41c3f 100644
--- a/fs/logfs/super.c
+++ b/fs/logfs/super.c
@@ -529,7 +529,7 @@ static void logfs_kill_sb(struct super_block *sb)
logfs_cleanup_rw(sb);
if (super->s_erase_page)
__free_page(super->s_erase_page);
- super->s_devops->put_device(sb);
+ super->s_devops->put_device(super);
logfs_mempool_destroy(super->s_btree_pool);
logfs_mempool_destroy(super->s_alias_pool);
kfree(super);
@@ -586,8 +586,8 @@ err1:
deactivate_locked_super(sb);
return err;
err0:
+ super->s_devops->put_device(super);
kfree(super);
- //devops->put_device(sb);
return err;
}