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authorDenis V. Lunev <den@openvz.org>2008-04-29 01:02:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-29 08:06:21 -0700
commita973909fc32be90884280b7a8cd2f2e093c97890 (patch)
tree32ceca146f9a6de03bb7cf91a141d0f445da04ab /drivers/scsi/sg.c
parent16e70f64a9358133a14872eb72cf39b6f38b6212 (diff)
downloadop-kernel-dev-a973909fc32be90884280b7a8cd2f2e093c97890.zip
op-kernel-dev-a973909fc32be90884280b7a8cd2f2e093c97890.tar.gz
scsi: use non-racy method for proc entries creation
Use proc_create() to make sure that ->proc_fops be setup before gluing PDE to main tree. Add correct ->owner to proc_fops to fix reading/module unloading race. Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/scsi/sg.c')
-rw-r--r--drivers/scsi/sg.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 2029422..c9d7f72 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -2667,7 +2667,6 @@ sg_proc_init(void)
{
int k, mask;
int num_leaves = ARRAY_SIZE(sg_proc_leaf_arr);
- struct proc_dir_entry *pdep;
struct sg_proc_leaf * leaf;
sg_proc_sgp = proc_mkdir(sg_proc_sg_dirname, NULL);
@@ -2676,13 +2675,10 @@ sg_proc_init(void)
for (k = 0; k < num_leaves; ++k) {
leaf = &sg_proc_leaf_arr[k];
mask = leaf->fops->write ? S_IRUGO | S_IWUSR : S_IRUGO;
- pdep = create_proc_entry(leaf->name, mask, sg_proc_sgp);
- if (pdep) {
- leaf->fops->owner = THIS_MODULE,
- leaf->fops->read = seq_read,
- leaf->fops->llseek = seq_lseek,
- pdep->proc_fops = leaf->fops;
- }
+ leaf->fops->owner = THIS_MODULE;
+ leaf->fops->read = seq_read;
+ leaf->fops->llseek = seq_lseek;
+ proc_create(leaf->name, mask, sg_proc_sgp, leaf->fops);
}
return 0;
}
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