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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-02-14 05:01:21 +0300 |
|---|---|---|
| committer | Mike Marshall <hubcap@omnibond.com> | 2016-02-19 21:45:54 +0300 |
| commit | ea2c9c9f6574e835cbc903c94b82b5a34a334866 (patch) | |
| tree | 47637785f81f2e7edb746de19a7b1a3c6ccd9627 /fs/orangefs/orangefs-bufmap.h | |
| parent | 178041848a6e7072cc6ebc1c6c7763e33f564722 (diff) | |
| download | linux-ea2c9c9f6574e835cbc903c94b82b5a34a334866.tar.xz | |
orangefs: bufmap rewrite
new waiting-for-slot logics:
* make request for slot wait for bufmap to be set up if it
comes before it's installed *OR* while it's running down
* make closing control device wait for all slots to be freed
* waiting itself rewritten to (open-coded) analogues of wait_event_...
primitives - we would need wait_event_locked() and, pardon an obscenely
long name, wait_event_interruptible_exclusive_timeout_locked().
* we never wait for more than slot_timeout_secs in total and,
if during the wait the daemon goes away, we only allow
ORANGEFS_BUFMAP_WAIT_TIMEOUT_SECS for it to come back.
* (cosmetical) bitmap is used instead of an array of zeroes and ones
* old (and only reached if we are about to corrupt memory) waiting
for daemon restart in service_operation() removed.
[Martin's fixes folded]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Diffstat (limited to 'fs/orangefs/orangefs-bufmap.h')
| -rw-r--r-- | fs/orangefs/orangefs-bufmap.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/orangefs/orangefs-bufmap.h b/fs/orangefs/orangefs-bufmap.h index 2a2d4269d03e..f0684f0085d1 100644 --- a/fs/orangefs/orangefs-bufmap.h +++ b/fs/orangefs/orangefs-bufmap.h @@ -15,10 +15,10 @@ int orangefs_bufmap_shift_query(void); int orangefs_bufmap_initialize(struct ORANGEFS_dev_map_desc *user_desc); -int orangefs_get_bufmap_init(void); - void orangefs_bufmap_finalize(void); +void orangefs_bufmap_run_down(void); + int orangefs_bufmap_get(struct orangefs_bufmap **mapp, int *buffer_index); void orangefs_bufmap_put(int buffer_index); |