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| author | Jens Axboe <jens.axboe@oracle.com> | 2010-05-20 10:43:18 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2010-05-21 21:12:40 +0200 |
| commit | 35f3d14dbbc58447c61e38a162ea10add6b31dc7 (patch) | |
| tree | 3e03cd540b7dcdac82195c4e76862c0ce6daaaf0 /fs/fcntl.c | |
| parent | 3d42b3612891baecf709d93f28655a6882a65d41 (diff) | |
| download | lwn-35f3d14dbbc58447c61e38a162ea10add6b31dc7.tar.gz lwn-35f3d14dbbc58447c61e38a162ea10add6b31dc7.zip | |
pipe: add support for shrinking and growing pipes
This patch adds F_GETPIPE_SZ and F_SETPIPE_SZ fcntl() actions for
growing and shrinking the size of a pipe and adjusts pipe.c and splice.c
(and relay and network splice) usage to work with these larger (or smaller)
pipes.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs/fcntl.c')
| -rw-r--r-- | fs/fcntl.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/fcntl.c b/fs/fcntl.c index 452d02f9075e..bcba960328fa 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -14,6 +14,7 @@ #include <linux/dnotify.h> #include <linux/slab.h> #include <linux/module.h> +#include <linux/pipe_fs_i.h> #include <linux/security.h> #include <linux/ptrace.h> #include <linux/signal.h> @@ -412,6 +413,10 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, case F_NOTIFY: err = fcntl_dirnotify(fd, filp, arg); break; + case F_SETPIPE_SZ: + case F_GETPIPE_SZ: + err = pipe_fcntl(filp, cmd, arg); + break; default: break; } |