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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-08-22 18:42:10 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-09-26 21:10:00 -0400 |
| commit | 864bdb3b6cbd9911222543fef1cfe36f88183f44 (patch) | |
| tree | bd00e6293592a084ee0fe68e3acb93060f54ae68 /fs/file.c | |
| parent | 2be7fd55d44882c9818ed2d1dabc0f0abab5eeed (diff) | |
| download | lwn-864bdb3b6cbd9911222543fef1cfe36f88183f44.tar.gz lwn-864bdb3b6cbd9911222543fef1cfe36f88183f44.zip | |
new helper: daemonize_descriptors()
descriptor-related parts of daemonize, done right. As the
result we simplify the locking rules for ->files - we
hold task_lock in *all* cases when we modify ->files.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/file.c')
| -rw-r--r-- | fs/file.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/file.c b/fs/file.c index e6e418122587..15750b80e3ce 100644 --- a/fs/file.c +++ b/fs/file.c @@ -519,6 +519,12 @@ struct files_struct init_files = { .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), }; +void daemonize_descriptors(void) +{ + atomic_inc(&init_files.count); + reset_files_struct(&init_files); +} + /* * allocate a file descriptor, mark it busy. */ |