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authorJens Axboe <jens.axboe@oracle.com>2009-04-08 13:44:08 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-04-15 08:28:12 +0200
commit053c525fcf976810f023d96472f414c0d5e6339b (patch)
tree2e1954da38bd4c59edb9ff3daf0111b02c181b0a /fs/buffer.c
parent329007ce25d56fc7113df7b4828d607806d8bc21 (diff)
downloadlwn-053c525fcf976810f023d96472f414c0d5e6339b.tar.gz
lwn-053c525fcf976810f023d96472f414c0d5e6339b.zip
buffer: switch do_emergency_thaw() away from pdflush_operation()
This is (again) a preparatory patch similar to commit a2a9537ac0b37a5da6fbe7e1e9cb06c524d2a9c4. It open codes a simple async way of executing do_thaw_all() out of context, so we can get rid of pdflush. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs/buffer.c')
-rw-r--r--fs/buffer.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index 13edf7ad3ff1..ff8bb1f2333a 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -547,7 +547,7 @@ repeat:
return err;
}
-void do_thaw_all(unsigned long unused)
+void do_thaw_all(struct work_struct *work)
{
struct super_block *sb;
char b[BDEVNAME_SIZE];
@@ -567,6 +567,7 @@ restart:
goto restart;
}
spin_unlock(&sb_lock);
+ kfree(work);
printk(KERN_WARNING "Emergency Thaw complete\n");
}
@@ -577,7 +578,13 @@ restart:
*/
void emergency_thaw_all(void)
{
- pdflush_operation(do_thaw_all, 0);
+ struct work_struct *work;
+
+ work = kmalloc(sizeof(*work), GFP_ATOMIC);
+ if (work) {
+ INIT_WORK(work, do_thaw_all);
+ schedule_work(work);
+ }
}
/**