diff options
| author |   Fabio M. De Francesco <fmdefrancesco@gmail.com> | 2022-07-05 16:22:02 +0200 |
|---|---|---|
| committer |   Damien Le Moal <damien.lemoal@opensource.wdc.com> | 2022-07-07 07:30:36 +0900 |
| commit | 6bac30bb8ff8195cbcfc177b3b6b0732929170c1 (patch) | |
| tree | 526308426343f510b5e5fa9005a9d61f5ab8ae8a /fs/zonefs | |
| parent | Linux 5.19-rc5 (diff) | |
| download | linux-dev-6bac30bb8ff8195cbcfc177b3b6b0732929170c1.tar.xz linux-dev-6bac30bb8ff8195cbcfc177b3b6b0732929170c1.zip | |
zonefs: Call page_address() on page acquired with GFP_KERNEL flag
zonefs_read_super() acquires a page with alloc_page(GFP_KERNEL). That
page cannot come from ZONE_HIGHMEM, thus there's no need to map it with
kmap().
Therefore, use a plain page_address() on that page.
Suggested-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Diffstat (limited to 'fs/zonefs')
| -rw-r--r-- | fs/zonefs/super.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c index 053299758deb..bd4e4be97a68 100644 --- a/fs/zonefs/super.c +++ b/fs/zonefs/super.c @@ -1687,11 +1687,11 @@ static int zonefs_read_super(struct super_block *sb) if (ret) goto free_page; - super = kmap(page); + super = page_address(page); ret = -EINVAL; if (le32_to_cpu(super->s_magic) != ZONEFS_MAGIC) - goto unmap; + goto free_page; stored_crc = le32_to_cpu(super->s_crc); super->s_crc = 0; @@ -1699,14 +1699,14 @@ static int zonefs_read_super(struct super_block *sb) if (crc != stored_crc) { zonefs_err(sb, "Invalid checksum (Expected 0x%08x, got 0x%08x)", crc, stored_crc); - goto unmap; + goto free_page; } sbi->s_features = le64_to_cpu(super->s_features); if (sbi->s_features & ~ZONEFS_F_DEFINED_FEATURES) { zonefs_err(sb, "Unknown features set 0x%llx\n", sbi->s_features); - goto unmap; + goto free_page; } if (sbi->s_features & ZONEFS_F_UID) { @@ -1714,7 +1714,7 @@ static int zonefs_read_super(struct super_block *sb) le32_to_cpu(super->s_uid)); if (!uid_valid(sbi->s_uid)) { zonefs_err(sb, "Invalid UID feature\n"); - goto unmap; + goto free_page; } } @@ -1723,7 +1723,7 @@ static int zonefs_read_super(struct super_block *sb) le32_to_cpu(super->s_gid)); if (!gid_valid(sbi->s_gid)) { zonefs_err(sb, "Invalid GID feature\n"); - goto unmap; + goto free_page; } } @@ -1732,14 +1732,12 @@ static int zonefs_read_super(struct super_block *sb) if (memchr_inv(super->s_reserved, 0, sizeof(super->s_reserved))) { zonefs_err(sb, "Reserved area is being used\n"); - goto unmap; + goto free_page; } import_uuid(&sbi->s_uuid, super->s_uuid); ret = 0; -unmap: - kunmap(page); free_page: __free_page(page); |