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| author | Thomas Maier <balagi@justmail.de> | 2006-12-08 02:36:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 08:28:38 -0800 |
| commit | 0a0fc9601dd1024ec7171993bf075a789246e1ed (patch) | |
| tree | c606a35beb9c56ccfeff57cb594e6a7e5b12a80c /include/linux/pktcdvd.h | |
| parent | 2d4eeec563a0472b68de3597c17f2d3b11c49c00 (diff) | |
| download | kernel_samsung_smdk4412-0a0fc9601dd1024ec7171993bf075a789246e1ed.zip kernel_samsung_smdk4412-0a0fc9601dd1024ec7171993bf075a789246e1ed.tar.gz kernel_samsung_smdk4412-0a0fc9601dd1024ec7171993bf075a789246e1ed.tar.bz2 | |
[PATCH] pktcdvd: bio write congestion using congestion_wait()
This adds a bio write queue congestion control to the pktcdvd driver with
fixed on/off marks. It prevents that the driver consumes a unlimited
amount of write requests.
[akpm@osdl.org: sync with congestion_wait() renaming]
Signed-off-by: Thomas Maier <balagi@justmail.de>
Cc: Peter Osterlund <petero2@telia.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/pktcdvd.h')
| -rw-r--r-- | include/linux/pktcdvd.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/pktcdvd.h b/include/linux/pktcdvd.h index 8a94c71..9b1a185 100644 --- a/include/linux/pktcdvd.h +++ b/include/linux/pktcdvd.h @@ -112,6 +112,12 @@ struct pkt_ctrl_command { #include <linux/completion.h> #include <linux/cdrom.h> + +/* default bio write queue congestion marks */ +#define PKT_WRITE_CONGESTION_ON 10000 +#define PKT_WRITE_CONGESTION_OFF 9000 + + struct packet_settings { __u32 size; /* packet size in (512 byte) sectors */ @@ -271,6 +277,9 @@ struct pktcdvd_device struct packet_iosched iosched; struct gendisk *disk; + + int write_congestion_off; + int write_congestion_on; }; #endif /* __KERNEL__ */ |