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| author | Sage Weil <sage@newdream.net> | 2010-03-19 13:27:53 -0700 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2010-03-23 07:47:03 -0700 |
| commit | 8f883c24de33ba929c95e018ac0ba66e4f46734b (patch) | |
| tree | 82a9a50b08826612f0613283c7b3f8f6aea264e7 /fs/ceph/addr.c | |
| parent | ec4318bcb4c59d8b8bf7037c9f444a9887ccb265 (diff) | |
| download | linux-8f883c24de33ba929c95e018ac0ba66e4f46734b.tar.gz linux-8f883c24de33ba929c95e018ac0ba66e4f46734b.tar.bz2 linux-8f883c24de33ba929c95e018ac0ba66e4f46734b.zip | |
ceph: make write_begin wait propagate ERESTARTSYS
Currently, if the wait_event_interruptible is interrupted, we
return EAGAIN unconditionally and loop, such that we aren't, in
fact, interruptible. So, propagate ERESTARTSYS if we get it.
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/addr.c')
| -rw-r--r-- | fs/ceph/addr.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 23bb0ceabe31..ce8ef6107727 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -919,6 +919,10 @@ static int context_is_writeable_or_written(struct inode *inode, /* * We are only allowed to write into/dirty the page if the page is * clean, or already dirty within the same snap context. + * + * called with page locked. + * return success with page locked, + * or any failure (incl -EAGAIN) with page unlocked. */ static int ceph_update_writeable_page(struct file *file, loff_t pos, unsigned len, @@ -961,9 +965,11 @@ retry_locked: snapc = ceph_get_snap_context((void *)page->private); unlock_page(page); ceph_queue_writeback(inode); - wait_event_interruptible(ci->i_cap_wq, + r = wait_event_interruptible(ci->i_cap_wq, context_is_writeable_or_written(inode, snapc)); ceph_put_snap_context(snapc); + if (r == -ERESTARTSYS) + return r; return -EAGAIN; } @@ -1035,7 +1041,7 @@ static int ceph_write_begin(struct file *file, struct address_space *mapping, int r; do { - /* get a page*/ + /* get a page */ page = grab_cache_page_write_begin(mapping, index, 0); if (!page) return -ENOMEM; |