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| author |   Sage Weil <sage@newdream.net> | 2011-07-26 11:26:07 -0700 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2011-07-26 11:26:07 -0700 |
| commit | 4918b6d140c4822201ebbe2f070875332aff337b (patch) | |
| tree | 0327a0a68acd2f8209893b4770ba3c9d9264041c /fs/ceph/ioctl.c | |
| parent | ceph: add flags field to file_info (diff) | |
| download | linux-dev-4918b6d140c4822201ebbe2f070875332aff337b.tar.xz linux-dev-4918b6d140c4822201ebbe2f070875332aff337b.zip | |
ceph: add F_SYNC file flag to force sync (non-O_DIRECT) io
This allows us to force IO through the sync path which you normally only
get when multiple clients are reading/writing to the same file or by
mounting with -o sync. Among other things, this lets test programs verify
correctness with a single mount.
Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/ioctl.c')
| -rw-r--r-- | fs/ceph/ioctl.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index ef0b5f48e13a..a757a5680578 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -231,6 +231,14 @@ static long ceph_ioctl_lazyio(struct file *file) return 0; } +static long ceph_ioctl_syncio(struct file *file) +{ + struct ceph_file_info *fi = file->private_data; + + fi->flags |= CEPH_F_SYNC; + return 0; +} + long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { dout("ioctl file %p cmd %u arg %lu\n", file, cmd, arg); @@ -249,6 +257,9 @@ long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case CEPH_IOC_LAZYIO: return ceph_ioctl_lazyio(file); + + case CEPH_IOC_SYNCIO: + return ceph_ioctl_syncio(file); } return -ENOTTY; |