diff options
| author | Brian Behlendorf <[email protected]> | 2010-11-10 15:49:40 -0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2010-11-10 17:00:33 -0800 |
| commit | 675de5aa379bfceb0258a20c4ccd1414e4798ee6 (patch) | |
| tree | 241b2262cb0250579b1bd14ab37ac003eef52adc /zfs_config.h.in | |
| parent | f4af6bb783b0b7f2a6075cb1c74c225db8a157b2 (diff) | |
Linux 2.6.36 compat, synchronous bio flag
The name of the flag used to mark a bio as synchronous has changed
again in the 2.6.36 kernel due to the unification of the BIO_RW_*
and REQ_* flags. The new flag is called REQ_SYNC. To simplify
checking this flag I have introduced the vdev_disk_dio_is_sync()
helper function. Based on the results of several new autoconf
tests it uses the correct mask to check for a synchronous bio.
Preferred interface for flagging a synchronous bio:
2.6.12-2.6.29: BIO_RW_SYNC
2.6.30-2.6.35: BIO_RW_SYNCIO
2.6.36-2.6.xx: REQ_SYNC
Diffstat (limited to 'zfs_config.h.in')
| -rw-r--r-- | zfs_config.h.in | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/zfs_config.h.in b/zfs_config.h.in index f666d4578..6e0e62390 100644 --- a/zfs_config.h.in +++ b/zfs_config.h.in @@ -24,6 +24,9 @@ /* BIO_RW_FAILFAST_* are defined */ #undef HAVE_BIO_RW_FAILFAST_DTD +/* BIO_RW_SYNC is defined */ +#undef HAVE_BIO_RW_SYNC + /* BIO_RW_SYNCIO is defined */ #undef HAVE_BIO_RW_SYNCIO @@ -96,6 +99,9 @@ /* open_bdev_exclusive() is available */ #undef HAVE_OPEN_BDEV_EXCLUSIVE +/* REQ_SYNC is defined */ +#undef HAVE_REQ_SYNC + /* rq_for_each_segment() is available */ #undef HAVE_RQ_FOR_EACH_SEGMENT |