f2fs_ioc_shutdown() ioctl gets stuck in the below path
when issued with F2FS_GOING_DOWN_FULLSYNC option.
__switch_to+0x90/0xc4
percpu_down_write+0x8c/0xc0
freeze_super+0xec/0x1e4
freeze_bdev+0xc4/0xcc
f2fs_ioctl+0xc0c/0x1ce0
f2fs_compat_ioctl+0x98/0x1f0
Signed-off-by: Sahitya Tummala <stumm...@codeaurora.org>
---
v2:
remove lock coverage for only F2FS_GOING_DOWN_FULLSYNC case as suggested by
Chao.
fs/f2fs/file.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 6b94f19..5a132c9 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1857,6 +1857,7 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned
long arg)
switch (in) {
case F2FS_GOING_DOWN_FULLSYNC:
+ mnt_drop_write_file(filp);
sb = freeze_bdev(sb->s_bdev);
if (IS_ERR(sb)) {
ret = PTR_ERR(sb);
@@ -1894,7 +1895,8 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned
long arg)
f2fs_update_time(sbi, REQ_TIME);
out:
- mnt_drop_write_file(filp);
+ if (in != F2FS_GOING_DOWN_FULLSYNC)
+ mnt_drop_write_file(filp);
return ret;
}
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux
Foundation Collaborative Project.
