HomeFreeBSD

Replace P2ALIGN with P2ALIGN_TYPED and delete P2ALIGN.

Description

Replace P2ALIGN with P2ALIGN_TYPED and delete P2ALIGN.

In P2ALIGN, the result would be incorrect when align is unsigned
integer and x is larger than max value of the type of align.
In that case, -(align) would be a positive integer, which means
high bits would be zero and finally stay zero after '&' when
align is converted to a larger integer type.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Youzhong Yang <yyang@mathworks.com>
Signed-off-by: Qiuhao Chen <chenqiuhao1997@gmail.com>
Closes #15940

Details

Provenance
chenqiuhao1997 <haohao0924@126.com>Authored on May 10 2024, 3:47 PM
Brian Behlendorf <behlendorf1@llnl.gov>Committed on May 13 2024, 3:27 PM
Parents
rG256659204578: Tag zfs-2.2.4
Branches
Unknown
Tags
Unknown