mirror_zfs/module
Richard Yao e6328fda2e Cleanup: !A || A && B is equivalent to !A || B
In zfs_zaccess_dataset_check(), we have the following subexpression:

(!IS_DEVVP(ZTOV(zp)) ||
    (IS_DEVVP(ZTOV(zp)) && (v4_mode & WRITE_MASK_ATTRS)))

When !IS_DEVVP(ZTOV(zp)) is false, IS_DEVVP(ZTOV(zp)) is true under the
law of the excluded middle since we are not doing pseudoboolean alegbra.
Therefore doing:

(IS_DEVVP(ZTOV(zp)) && (v4_mode & WRITE_MASK_ATTRS))

Is unnecessary and we can just do:

(v4_mode & WRITE_MASK_ATTRS)

The Linux 5.16.14 kernel's coccicheck caught this. The semantic
patch that caught it was:

./scripts/coccinelle/misc/excluded_middle.cocci

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14372
2023-01-12 16:00:15 -08:00
..
avl Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
icp Cleanup: Remove unnecessary explicit casts of pointers from allocators 2023-01-12 15:59:12 -08:00
lua Cleanup: Replace oldstyle struct hack with C99 flexible array members 2023-01-12 16:00:03 -08:00
nvpair Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
os Cleanup: !A || A && B is equivalent to !A || B 2023-01-12 16:00:15 -08:00
unicode Illumos #15286: do_composition() needs sign awareness 2023-01-05 11:16:21 -08:00
zcommon Micro-optimize fletcher4 calculations 2022-12-05 11:00:34 -08:00
zfs Cleanup: Replace oldstyle struct hack with C99 flexible array members 2023-01-12 16:00:03 -08:00
zstd Cleanup: Remove unnecessary explicit casts of pointers from allocators 2023-01-12 15:59:12 -08:00
.gitignore FreeBSD: Ignore symlink to i386 includes 2022-08-02 16:34:23 -07:00
Kbuild.in Fix Clang 15 compilation errors 2022-11-30 13:46:26 -08:00
Makefile.bsd Cleanup dead spa_boot code 2022-09-13 16:40:10 -07:00
Makefile.in autoconf: use include directives instead of recursing down lib 2022-05-10 10:18:11 -07:00