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| author | dyson <dyson@FreeBSD.org> | 1996-07-02 13:38:10 +0000 |
|---|---|---|
| committer | dyson <dyson@FreeBSD.org> | 1996-07-02 13:38:10 +0000 |
| commit | 835bc691899baa57585dbef6035920f4905812a7 (patch) | |
| tree | ab1b99af6754c4b6e8ef302b788761bfeb831979 /sys/fs/procfs/procfs.h | |
| parent | c6eea469894d2b98f6429e24f655d896dcd2a026 (diff) | |
| download | FreeBSD-src-835bc691899baa57585dbef6035920f4905812a7.zip FreeBSD-src-835bc691899baa57585dbef6035920f4905812a7.tar.gz | |
Implement locking for pfs nodes, when at the leaf. Concurrent access
to information from a single process causes hangs. Specifically, this
fixes problems (hangs) with concurrent ps commands, when the system is under
heavy memory load.
Reviewed by: davidg
Diffstat (limited to 'sys/fs/procfs/procfs.h')
| -rw-r--r-- | sys/fs/procfs/procfs.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/fs/procfs/procfs.h b/sys/fs/procfs/procfs.h index 69d88bd..b639980 100644 --- a/sys/fs/procfs/procfs.h +++ b/sys/fs/procfs/procfs.h @@ -36,7 +36,7 @@ * * @(#)procfs.h 8.6 (Berkeley) 2/3/94 * - * $Id: procfs.h,v 1.10 1996/06/17 22:43:35 dyson Exp $ + * $Id: procfs.h,v 1.11 1996/06/18 05:15:58 dyson Exp $ */ /* @@ -68,6 +68,7 @@ struct pfsnode { u_short pfs_mode; /* mode bits for stat() */ u_long pfs_flags; /* open flags */ u_long pfs_fileno; /* unique file id */ + pid_t pfs_lockowner; /* pfs lock owner */ }; #define PROCFS_NOTELEN 64 /* max length of a note (/proc/$pid/note) */ |
