From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/mm/msync.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/kernel/mm/msync.c b/kernel/mm/msync.c
index c3bd3e7..69c6d20 100644
--- a/kernel/mm/msync.c
+++ b/kernel/mm/msync.c
@@ -57,7 +57,7 @@
* If the interval [start,end) covers some unmapped address ranges,
* just ignore them, but return -ENOMEM at the end.
*/
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
vma = find_vma(mm, start);
for (;;) {
struct file *file;
@@ -88,12 +88,12 @@
if ((flags & MS_SYNC) && file &&
(vma->vm_flags & VM_SHARED)) {
get_file(file);
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
error = vfs_fsync_range(file, fstart, fend, 1);
fput(file);
if (error || start >= end)
goto out;
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
vma = find_vma(mm, start);
} else {
if (start >= end) {
@@ -104,7 +104,7 @@
}
}
out_unlock:
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
out:
return error ? : unmapped_error;
}
--
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