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[PATCH] separate bdi congestion functions from queue congestion functions

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Separate out the concept of "queue congestion" from "backing-dev congestion".
Congestion is a backing-dev concept, not a queue concept.

The blk_* congestion functions are retained, as wrappers around the core
backing-dev congestion functions.

This proper layering is needed so that NFS can cleanly use the congestion
functions, and so that CONFIG_BLOCK=n actually links.

Cc: "Thomas Maier" <[email protected]>
Cc: "Jens Axboe" <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: David Howells <[email protected]>
Cc: Peter Osterlund <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andrew Morton 2006-10-19 23:28:16 -07:00 • committed by Linus Torvalds
commit 3fcfab16c5
17 changed files with 126 additions and 104 deletions
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3
fs/fat/file.c
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@ -13,6 +13,7 @@
#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include <linux/backing-dev.h>
#include <linux/blkdev.h>
int fat_generic_ioctl(struct inode *inode, struct file *filp,
@ -118,7 +119,7 @@ static int fat_file_release(struct inode *inode, struct file *filp)
if ((filp->f_mode & FMODE_WRITE) &&
MSDOS_SB(inode->i_sb)->options.flush) {
fat_flush_inodes(inode->i_sb, inode, NULL);
blk_congestion_wait(WRITE, HZ/10);
congestion_wait(WRITE, HZ/10);
}
return 0;
}