RepoMirrors
/
mars
mirror of https://github.com/schoebel/mars
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

if: fix potential race on shutdown

This commit is contained in:
Thomas Schoebel-Theuer 2014-12-01 10:19:58 +01:00
parent c0a9790149
commit 324f472889
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
kernel/mars_if.c
View File

@ -995,13 +995,17 @@ static int if_switch(struct if_brick *brick)
status = -EBUSY;
goto done; // don't indicate "off" status
}
MARS_DBG("calling del_gendisk()\n");
del_gendisk(input->disk);
/* There might be subtle races */
while (atomic_read(&input->flying_count) > 0) {
brick_msleep(100);
}
if (input->bdev) {
MARS_DBG("calling bdput()\n");
bdput(input->bdev);
input->bdev = NULL;
}
MARS_DBG("calling del_gendisk()\n");
del_gendisk(input->disk);
MARS_DBG("calling put_disk()\n");
put_disk(input->disk);
input->disk = NULL;