aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--fs/ocfs2/inode.c14
-rw-r--r--fs/ocfs2/mmap.c48
-rw-r--r--fs/ocfs2/super.c20
-rw-r--r--fs/ocfs2/super.h7
4 files changed, 39 insertions, 50 deletions
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 9ee13f70da5..b7650ccd76d 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -957,7 +957,7 @@ static void ocfs2_cleanup_delete_inode(struct inode *inode,
void ocfs2_delete_inode(struct inode *inode)
{
int wipe, status;
- sigset_t blocked, oldset;
+ sigset_t oldset;
struct buffer_head *di_bh = NULL;
mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
@@ -984,13 +984,7 @@ void ocfs2_delete_inode(struct inode *inode)
* messaging paths may return us -ERESTARTSYS. Which would
* cause us to exit early, resulting in inodes being orphaned
* forever. */
- sigfillset(&blocked);
- status = sigprocmask(SIG_BLOCK, &blocked, &oldset);
- if (status < 0) {
- mlog_errno(status);
- ocfs2_cleanup_delete_inode(inode, 1);
- goto bail;
- }
+ ocfs2_block_signals(&oldset);
/*
* Synchronize us against ocfs2_get_dentry. We take this in
@@ -1064,9 +1058,7 @@ bail_unlock_nfs_sync:
ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0);
bail_unblock:
- status = sigprocmask(SIG_SETMASK, &oldset, NULL);
- if (status < 0)
- mlog_errno(status);
+ ocfs2_unblock_signals(&oldset);
bail:
clear_inode(inode);
mlog_exit_void();
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c
index 39737613424..a61809f8eab 100644
--- a/fs/ocfs2/mmap.c
+++ b/fs/ocfs2/mmap.c
@@ -42,44 +42,20 @@
#include "file.h"
#include "inode.h"
#include "mmap.h"
+#include "super.h"
-static inline int ocfs2_vm_op_block_sigs(sigset_t *blocked, sigset_t *oldset)
-{
- /* The best way to deal with signals in the vm path is
- * to block them upfront, rather than allowing the
- * locking paths to return -ERESTARTSYS. */
- sigfillset(blocked);
-
- /* We should technically never get a bad return value
- * from sigprocmask */
- return sigprocmask(SIG_BLOCK, blocked, oldset);
-}
-
-static inline int ocfs2_vm_op_unblock_sigs(sigset_t *oldset)
-{
- return sigprocmask(SIG_SETMASK, oldset, NULL);
-}
static int ocfs2_fault(struct vm_area_struct *area, struct vm_fault *vmf)
{
- sigset_t blocked, oldset;
- int error, ret;
+ sigset_t oldset;
+ int ret;
mlog_entry("(area=%p, page offset=%lu)\n", area, vmf->pgoff);
- error = ocfs2_vm_op_block_sigs(&blocked, &oldset);
- if (error < 0) {
- mlog_errno(error);
- ret = VM_FAULT_SIGBUS;
- goto out;
- }
-
+ ocfs2_block_signals(&oldset);
ret = filemap_fault(area, vmf);
+ ocfs2_unblock_signals(&oldset);
- error = ocfs2_vm_op_unblock_sigs(&oldset);
- if (error < 0)
- mlog_errno(error);
-out:
mlog_exit_ptr(vmf->page);
return ret;
}
@@ -159,14 +135,10 @@ static int ocfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
struct page *page = vmf->page;
struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
struct buffer_head *di_bh = NULL;
- sigset_t blocked, oldset;
- int ret, ret2;
+ sigset_t oldset;
+ int ret;
- ret = ocfs2_vm_op_block_sigs(&blocked, &oldset);
- if (ret < 0) {
- mlog_errno(ret);
- return ret;
- }
+ ocfs2_block_signals(&oldset);
/*
* The cluster locks taken will block a truncate from another
@@ -194,9 +166,7 @@ static int ocfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
ocfs2_inode_unlock(inode, 1);
out:
- ret2 = ocfs2_vm_op_unblock_sigs(&oldset);
- if (ret2 < 0)
- mlog_errno(ret2);
+ ocfs2_unblock_signals(&oldset);
if (ret)
ret = VM_FAULT_SIGBUS;
return ret;
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 12c2203a62f..cf6d87b5745 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -2560,5 +2560,25 @@ void __ocfs2_abort(struct super_block* sb,
ocfs2_handle_error(sb);
}
+/*
+ * Void signal blockers, because in-kernel sigprocmask() only fails
+ * when SIG_* is wrong.
+ */
+void ocfs2_block_signals(sigset_t *oldset)
+{
+ int rc;
+ sigset_t blocked;
+
+ sigfillset(&blocked);
+ rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
+ BUG_ON(rc);
+}
+
+void ocfs2_unblock_signals(sigset_t *oldset)
+{
+ int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
+ BUG_ON(rc);
+}
+
module_init(ocfs2_init);
module_exit(ocfs2_exit);
diff --git a/fs/ocfs2/super.h b/fs/ocfs2/super.h
index 783f5270f2a..40c7de084c1 100644
--- a/fs/ocfs2/super.h
+++ b/fs/ocfs2/super.h
@@ -45,4 +45,11 @@ void __ocfs2_abort(struct super_block *sb,
#define ocfs2_abort(sb, fmt, args...) __ocfs2_abort(sb, __PRETTY_FUNCTION__, fmt, ##args)
+/*
+ * Void signal blockers, because in-kernel sigprocmask() only fails
+ * when SIG_* is wrong.
+ */
+void ocfs2_block_signals(sigset_t *oldset);
+void ocfs2_unblock_signals(sigset_t *oldset);
+
#endif /* OCFS2_SUPER_H */