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| author | Marcus Brinkmann <marcus@gnu.org> | 2001-04-19 22:11:52 +0000 |
|---|---|---|
| committer | Marcus Brinkmann <marcus@gnu.org> | 2001-04-19 22:11:52 +0000 |
| commit | 82781dd6da2b6a1eb113e20d100052509bb85a90 (patch) | |
| tree | 748f7044ed4fe884d8d3b350e75906e29e01aa41 /storeio/dev.h | |
| parent | 83e61d2d234ac403a6e6e91c12b1d87aca64de10 (diff) | |
| download | hurd-82781dd6da2b6a1eb113e20d100052509bb85a90.tar.gz hurd-82781dd6da2b6a1eb113e20d100052509bb85a90.tar.bz2 hurd-82781dd6da2b6a1eb113e20d100052509bb85a90.zip | |
2001-02-18 Marcus Brinkmann <marcus@gnu.org>
* dev.h (struct dev): New member nperopens.
* storeio.c (open_hook): Hold device lock and check if this is the
first open. If yes, activate the store.
(close_hook): Hold global_lock and check if this was the last
open. If yes, inactivate the store.
* dev.c (dev_open): Open the store with STORE_INACTIVE
(in store_parsed_open as well as in store_create).
Diffstat (limited to 'storeio/dev.h')
| -rw-r--r-- | storeio/dev.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/storeio/dev.h b/storeio/dev.h index 7a64c54e..d5b9d1a4 100644 --- a/storeio/dev.h +++ b/storeio/dev.h @@ -50,8 +50,12 @@ struct dev indicates that there is no owner. */ pid_t owner; - /* This lock protects `store' and `owner'. The other members never - change after creation, except for those locked by io_lock (below). */ + /* The number of active opens. */ + int nperopens; + + /* This lock protects `store', `owner' and `nperopens'. The other + members never change after creation, except for those locked by + io_lock (below). */ struct mutex lock; /* Nonzero iff the --no-cache flag was given. |