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libbtrfs: use unsigned types for bit shifts

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Bit shifts should be done on unsigned type as a matter of good practice
to avoid any problems with bit overflowing to the sign bit.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2024-03-12 22:03:36 +01:00
parent 1c551e22cf
commit a0ff3f19af
3 changed files with 14 additions and 14 deletions
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2
libbtrfs/crc32c.c
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@ -102,7 +102,7 @@ static void crc32c_intel_probe(void)
eax = 1;
do_cpuid(&eax, &ebx, &ecx, &edx);
crc32c_intel_available = (ecx & (1 << 20)) != 0;
crc32c_intel_available = (ecx & (1U << 20)) != 0;
crc32c_probed = 1;
}
}

24
libbtrfs/ctree.h
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@ -1581,18 +1581,18 @@ static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
/*
* Inode flags
*/
#define BTRFS_INODE_NODATASUM (1 << 0)
#define BTRFS_INODE_NODATACOW (1 << 1)
#define BTRFS_INODE_READONLY (1 << 2)
#define BTRFS_INODE_NOCOMPRESS (1 << 3)
#define BTRFS_INODE_PREALLOC (1 << 4)
#define BTRFS_INODE_SYNC (1 << 5)
#define BTRFS_INODE_IMMUTABLE (1 << 6)
#define BTRFS_INODE_APPEND (1 << 7)
#define BTRFS_INODE_NODUMP (1 << 8)
#define BTRFS_INODE_NOATIME (1 << 9)
#define BTRFS_INODE_DIRSYNC (1 << 10)
#define BTRFS_INODE_COMPRESS (1 << 11)
#define BTRFS_INODE_NODATASUM (1U << 0)
#define BTRFS_INODE_NODATACOW (1U << 1)
#define BTRFS_INODE_READONLY (1U << 2)
#define BTRFS_INODE_NOCOMPRESS (1U << 3)
#define BTRFS_INODE_PREALLOC (1U << 4)
#define BTRFS_INODE_SYNC (1U << 5)
#define BTRFS_INODE_IMMUTABLE (1U << 6)
#define BTRFS_INODE_APPEND (1U << 7)
#define BTRFS_INODE_NODUMP (1U << 8)
#define BTRFS_INODE_NOATIME (1U << 9)
#define BTRFS_INODE_DIRSYNC (1U << 10)
#define BTRFS_INODE_COMPRESS (1U << 11)
void read_extent_buffer(const struct extent_buffer *eb, void *dst,
unsigned long start, unsigned long len);

2
libbtrfs/kerncompat.h
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@ -72,7 +72,7 @@
#define BITS_PER_BYTE 8
#define BITS_PER_LONG (__SIZEOF_LONG__ * BITS_PER_BYTE)
#define __GFP_BITS_SHIFT 20
#define __GFP_BITS_MASK ((int)((1 << __GFP_BITS_SHIFT) - 1))
#define __GFP_BITS_MASK ((int)((1U << __GFP_BITS_SHIFT) - 1))
#define GFP_KERNEL 0
#define GFP_NOFS 0
#define __read_mostly