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lib/commit: Use direct repo writes if fsync is disabled

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For situations where fsync is disabled, there's basically
no reason to do the whole "staging directory" dance.  Just
write directly into the repo.

Today I use `fsync=false` for my build/cache repos.

I briefly considered not allocating a tmpdir at all
in this case, but we actually do want the txn tmpdir
for the non-`O_TMPFILE` case.

Part of https://github.com/ostreedev/ostree/issues/1184

Closes: #1354
Approved by: giuseppe
This commit is contained in:
Colin Walters 2017-11-28 15:17:10 -05:00 committed by Atomic Bot
parent a1745e1a79
commit bd6a15e7a3
1 changed files with 4 additions and 3 deletions
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7
src/libostree/ostree-repo-commit.c
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@ -38,13 +38,14 @@
#include "ostree-checksum-input-stream.h"
#include "ostree-varint.h"
/* In most cases, we write into a staging dir for commit, but we also allow
* direct writes into objects/ for e.g. hardlink imports.
/* If fsync is enabled and we're in a txn, we write into a staging dir for
* commit, but we also allow direct writes into objects/ for e.g. hardlink
* imports.
*/
static int
commit_dest_dfd (OstreeRepo *self)
{
if (self->in_transaction)
if (self->in_transaction && !self->disable_fsync)
return self->commit_stagedir.fd;
else
return self->objects_dir_fd;