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ircd::fs: Add write_opts for RWF_WRITE_LIFE_* support.

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This commit is contained in:
Jason Volk 2019-05-05 17:48:02 -07:00
parent 7f18bb17e2
commit 134bcc1bfb
3 changed files with 16 additions and 0 deletions
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6
include/ircd/fs/write.h
View file

@ -83,6 +83,12 @@ struct ircd::fs::write_opts
/// write with fsync(2)/fdsync(2) yourself.
bool metadata {false};
/// RWH_WRITE_LIFE integer representation (see fcntl(2) since Linux 4.13) if
/// supported; otherwise has no effect. As a write_opts option, this is only
/// meaningful if pwritev2(2) is available and the kernel recognizes the
/// RWF_WRITE_LIFE flag bits. See also fs::write_life(fd).
uint8_t write_life {0};
write_opts(const off_t & = 0);
};

5
ircd/fs.cc
View file

@ -1317,6 +1317,11 @@ ircd::fs::flags(const write_opts &opts)
ret |= RWF_SYNC;
#endif
#ifdef RWF_WRITE_LIFE_SHIFT
if(support_rwf_write_life && opts.write_life)
ret |= (opts.write_life << (RWF_WRITE_LIFE_SHIFT));
#endif
return ret;
}

5
ircd/fs_aio.cc
View file

@ -276,6 +276,11 @@ ircd::fs::aio::request::write::write(const int &fd,
if(support_sync && opts.sync && opts.metadata)
aio_rw_flags |= RWF_SYNC;
#endif
#ifdef RWF_WRITE_LIFE_SHIFT
if(support_rwf_write_life && opts.write_life)
aio_rw_flags |= (opts.write_life << (RWF_WRITE_LIFE_SHIFT));
#endif
}
size_t