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xz: Use POSIX_FADV_RANDOM for in "xz --list" mode.

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xz --list is random access so POSIX_FADV_SEQUENTIAL was clearly
wrong.
This commit is contained in:
Lasse Collin 2017-03-30 22:01:54 +03:00
parent 310d19816d
commit bba477257d
1 changed files with 8 additions and 2 deletions
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10
src/xz/file_io.c
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@ -525,7 +525,10 @@ io_open_src_real(file_pair *pair)
#endif
#ifdef HAVE_POSIX_FADVISE
// It will fail if stdin is a pipe and that's fine.
(void)posix_fadvise(STDIN_FILENO, 0, 0, POSIX_FADV_SEQUENTIAL);
(void)posix_fadvise(STDIN_FILENO, 0, 0,
opt_mode == MODE_LIST
? POSIX_FADV_RANDOM
: POSIX_FADV_SEQUENTIAL);
#endif
return false;
}
@ -716,7 +719,10 @@ io_open_src_real(file_pair *pair)
#ifdef HAVE_POSIX_FADVISE
// It will fail with some special files like FIFOs but that is fine.
(void)posix_fadvise(pair->src_fd, 0, 0, POSIX_FADV_SEQUENTIAL);
(void)posix_fadvise(pair->src_fd, 0, 0,
opt_mode == MODE_LIST
? POSIX_FADV_RANDOM
: POSIX_FADV_SEQUENTIAL);
#endif
return false;