diff options
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 28 |
1 files changed, 12 insertions, 16 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 0a81b87e..4f34ff6 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -135,12 +135,12 @@ struct inodes_stat_t { * immediately after submission. The write equivalent * of READ_SYNC. * WRITE_ODIRECT_PLUG Special case write for O_DIRECT only. - * WRITE_BARRIER Like WRITE_SYNC, but tells the block layer that all - * previously submitted writes must be safely on storage - * before this one is started. Also guarantees that when - * this write is complete, it itself is also safely on - * storage. Prevents reordering of writes on both sides - * of this IO. + * WRITE_FLUSH Like WRITE_SYNC but with preceding cache flush. + * WRITE_FUA Like WRITE_SYNC but data is guaranteed to be on + * non-volatile media on completion. + * WRITE_FLUSH_FUA Combination of WRITE_FLUSH and FUA. The IO is preceded + * by a cache flush and data is guaranteed to be on + * non-volatile media on completion. * */ #define RW_MASK REQ_WRITE @@ -156,16 +156,12 @@ struct inodes_stat_t { #define WRITE_SYNC (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG) #define WRITE_ODIRECT_PLUG (WRITE | REQ_SYNC) #define WRITE_META (WRITE | REQ_META) -#define WRITE_BARRIER (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \ - REQ_HARDBARRIER) - -/* - * These aren't really reads or writes, they pass down information about - * parts of device that are now unused by the file system. - */ -#define DISCARD_NOBARRIER (WRITE | REQ_DISCARD) -#define DISCARD_BARRIER (WRITE | REQ_DISCARD | REQ_HARDBARRIER) -#define DISCARD_SECURE (DISCARD_NOBARRIER | REQ_SECURE) +#define WRITE_FLUSH (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \ + REQ_FLUSH) +#define WRITE_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \ + REQ_FUA) +#define WRITE_FLUSH_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \ + REQ_FLUSH | REQ_FUA) #define SEL_IN 1 #define SEL_OUT 2 |