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add policy cache for 'open'

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A fusepath -> basepath cache for `open` to limit the overhead of FUSE in 'open, read/write, close' patterns (such as Transmission).
This commit is contained in:
Antonio SJ Musumeci 2019-01-06 12:52:55 -05:00
parent 8e0aa1d9a6
commit 7a057daa0c
44 changed files with 858 additions and 649 deletions
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49
src/release.cpp
View file

@ -14,34 +14,37 @@
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <fuse.h>
#include <string>
#include "config.hpp"
#include "errno.hpp"
#include "fileinfo.hpp"
#include "fs_base_close.hpp"
#include "fs_base_fadvise.hpp"
static
int
_release(FileInfo *fi,
const bool dropcacheonclose)
#include <fuse.h>
#include <string>
namespace local
{
// according to Feh of nocache calling it once doesn't always work
// https://github.com/Feh/nocache
if(dropcacheonclose)
{
fs::fadvise_dontneed(fi->fd);
fs::fadvise_dontneed(fi->fd);
}
static
int
release(FileInfo *fi_,
const bool dropcacheonclose_)
{
// according to Feh of nocache calling it once doesn't always work
// https://github.com/Feh/nocache
if(dropcacheonclose_)
{
fs::fadvise_dontneed(fi_->fd);
fs::fadvise_dontneed(fi_->fd);
}
fs::close(fi->fd);
fs::close(fi_->fd);
delete fi;
delete fi_;
return 0;
return 0;
}
}
namespace mergerfs
@ -49,13 +52,15 @@ namespace mergerfs
namespace fuse
{
int
release(const char *fusepath,
fuse_file_info *ffi)
release(const char *fusepath_,
fuse_file_info *ffi_)
{
const Config &config = Config::get();
FileInfo *fi = reinterpret_cast<FileInfo*>(ffi->fh);
FileInfo *fi = reinterpret_cast<FileInfo*>(ffi_->fh);
return _release(fi,config.dropcacheonclose);
config.open_cache.cleanup(10);
return local::release(fi,config.dropcacheonclose);
}
}
}