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Fix typo: replace readadhead with readahead (#7953) 

Summary:
This PR replaces several "readadhead" typos with "readahead".

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7953

Reviewed By: ajkr

Differential Revision: D26518903

Pulled By: jay-zhuang

fbshipit-source-id: 6f7dece0e39ec4f71c4a936399bcb2e02574f42a
This commit is contained in:
Ziyue Yang 2021-02-18 14:29:36 -08:00 committed by Facebook GitHub Bot
parent 8a05c21e32
commit 0c2d71edba
4 changed files with 7 additions and 7 deletions
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2
file/file_prefetch_buffer.cc
View File

@ -119,7 +119,7 @@ bool FilePrefetchBuffer::TryReadFromCache(const IOOptions& opts,
}
// If the buffer contains only a few of the requested bytes:
// If readahead is enabled: prefetch the remaining bytes + readadhead bytes
// If readahead is enabled: prefetch the remaining bytes + readahead bytes
// and satisfy the request.
// If readahead is not enabled: return false.
if (offset + n > buffer_offset_ + buffer_.CurrentSize()) {

8
file/file_prefetch_buffer.h
View File

@ -41,16 +41,16 @@ class FilePrefetchBuffer {
//
// Automatic readhead is enabled for a file if file_reader, readahead_size,
// and max_readahead_size are passed in.
// If file_reader is a nullptr, setting readadhead_size and max_readahead_size
// If file_reader is a nullptr, setting readahead_size and max_readahead_size
// does not make any sense. So it does nothing.
// A user can construct a FilePrefetchBuffer without any arguments, but use
// `Prefetch` to load data into the buffer.
FilePrefetchBuffer(RandomAccessFileReader* file_reader = nullptr,
size_t readadhead_size = 0, size_t max_readahead_size = 0,
size_t readahead_size = 0, size_t max_readahead_size = 0,
bool enable = true, bool track_min_offset = false)
: buffer_offset_(0),
file_reader_(file_reader),
readahead_size_(readadhead_size),
readahead_size_(readahead_size),
max_readahead_size_(max_readahead_size),
min_offset_read_(port::kMaxSizet),
enable_(enable),
@ -67,7 +67,7 @@ class FilePrefetchBuffer {
// Tries returning the data for a file raed from this buffer, if that data is
// in the buffer.
// It handles tracking the minimum read offset if track_min_offset = true.
// It also does the exponential readahead when readadhead_size is set as part
// It also does the exponential readahead when readahead_size is set as part
// of the constructor.
//
// offset : the file offset.

2
file/file_util.cc
View File

@ -195,7 +195,7 @@ IOStatus GenerateOneFileChecksum(
: default_max_read_ahead_size;
FilePrefetchBuffer prefetch_buffer(
reader.get(), readahead_size /* readadhead_size */,
reader.get(), readahead_size /* readahead_size */,
readahead_size /* max_readahead_size */, !allow_mmap_reads /* enable */);
Slice slice;

2
table/block_based/block_based_table_reader.cc
View File

@ -2925,7 +2925,7 @@ Status BlockBasedTable::VerifyChecksumInBlocks(
// FilePrefetchBuffer doesn't work in mmap mode and readahead is not
// needed there.
FilePrefetchBuffer prefetch_buffer(
rep_->file.get(), readahead_size /* readadhead_size */,
rep_->file.get(), readahead_size /* readahead_size */,
readahead_size /* max_readahead_size */,
!rep_->ioptions.allow_mmap_reads /* enable */);