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lizzie 2026-04-14 20:55:57 +00:00
parent 02af016c4d
commit 2c55af7d75
1 changed files with 3 additions and 2 deletions
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5
src/common/fs/file.cpp
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@ -10,7 +10,7 @@
#include "common/bit_util.h"
#include "common/fs/file.h"
#include "common/fs/fs.h"
#include "common/fs_types.h"
#include "common/fs/fs_types.h"
#ifdef ANDROID
#include "common/fs/fs_android.h"
#endif
@ -302,9 +302,10 @@ static int PlatformMapReadOnly(IOFile& io, const char* path) {
close(io.mmap_fd);
io.mmap_fd = -1;
} else {
using namespace Common::Literals;
// For small files it is acceptable to use a full readahead
// See https://github.com/torvalds/linux/blob/e80d033851b3bc94c3d254ac66660ddd0a49d72c/include/linux/pagemap.h#L1392
if (st.st_size >= 256_MiB) {
if (u64(st.st_size) >= 256_MiB) {
posix_madvise(io.mmap_base, io.mmap_size, POSIX_MADV_RANDOM);
} else {
posix_madvise(io.mmap_base, io.mmap_size, POSIX_MADV_SEQUENTIAL);