diff options
| author | Chunwei Chen <[email protected]> | 2016-01-26 12:29:46 -0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2016-11-04 10:46:40 -0700 |
| commit | ace1eae84cca8579596f46262d99df19f6d7e963 (patch) | |
| tree | 22e2bf44dfc906cf6cb75567d993a86f64bf1ef8 /module/zfs/zfs_znode.c | |
| parent | 987014903f9d36783547188b6ad00f01d9a076bd (diff) | |
Add support for O_TMPFILE
Linux 3.11 add O_TMPFILE to open(2), which allow creating an unlinked file on
supported filesystem. It's basically doing open(2) and unlink(2) atomically.
The filesystem support is added through i_op->tmpfile. We basically copy the
create operation except we get rid of the link and name related stuff and add
the new node to unlinked set.
We also add support for linkat(2) to link tmpfile. However, since all previous
file operation will skip ZIL, we force a txg_wait_synced to make sure we are
sync safe.
Signed-off-by: Chunwei Chen <[email protected]>
Diffstat (limited to 'module/zfs/zfs_znode.c')
| -rw-r--r-- | module/zfs/zfs_znode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/module/zfs/zfs_znode.c b/module/zfs/zfs_znode.c index ebf512a84..a4d1520b1 100644 --- a/module/zfs/zfs_znode.c +++ b/module/zfs/zfs_znode.c @@ -764,7 +764,7 @@ zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, links = 2; } else { size = 0; - links = 1; + links = (flag & IS_TMPFILE) ? 0 : 1; } if (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode)) |