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dump: Call fsync only if needed

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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
This commit is contained in:
Cyrill Gorcunov
2011-10-13 13:41:13 +04:00
parent d48706328e
commit 640e5c46be
2 changed files with 6 additions and 6 deletions
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6
crtools.c
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@@ -147,12 +147,6 @@ int prep_cr_fdset_for_dump(struct cr_fdset *cr_fdset,
magic = cr_fdset->desc[i].tmpl->magic; magic = cr_fdset->desc[i].tmpl->magic;
write_ptr_safe(cr_fdset->desc[i].fd, &magic, err); write_ptr_safe(cr_fdset->desc[i].fd, &magic, err);
/*
* Make sure it's on disk since we might
* need to re-open files in parasite.
*/
fsync(cr_fdset->desc[i].fd);
} }
ret = 0; ret = 0;
err: err:

6
parasite-syscall.c
View File

@@ -270,6 +270,12 @@ int parasite_dump_pages_seized(struct parasite_ctl *ctl, struct list_head *vma_a
goto chmod_err; goto chmod_err;
} }
/*
* Make sure the data is on disk since we will re-open
* it in another process.
*/
fsync(cr_fdset->desc[fd_type].fd);
jerr(ptrace(PTRACE_GETREGS, ctl->pid, NULL, &regs_orig), err); jerr(ptrace(PTRACE_GETREGS, ctl->pid, NULL, &regs_orig), err);
parasite_arg.command = PARASITE_CMD_DUMPPAGES; parasite_arg.command = PARASITE_CMD_DUMPPAGES;