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fuse: use freezable wait in fuse_get_req()

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Use freezable wait in fuse_get_req() so that it won't block
the system from entering suspend:

 Freezing user space processes failed after 20.009 seconds
 Call trace:
  __switch_to+0xcc/0x168
  schedule+0x57c/0x1138
  fuse_get_req+0xd0/0x2b0
  fuse_simple_request+0x120/0x620
  fuse_getxattr+0xe4/0x158
  fuse_xattr_get+0x2c/0x48
  __vfs_getxattr+0x160/0x1d8
  get_vfs_caps_from_disk+0x74/0x1a8
  __audit_inode+0x244/0x4d8
  user_path_at_empty+0x2e0/0x390
  __arm64_sys_faccessat+0xdc/0x260

Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Sergey Senozhatsky 2025-06-10 13:52:29 +09:00 committed by Miklos Szeredi
parent dd6a5a71c8
commit 14cbb72d75
1 changed files with 3 additions and 2 deletions
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5
fs/fuse/dev.c
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@ -207,8 +207,9 @@ static struct fuse_req *fuse_get_req(struct mnt_idmap *idmap,
if (fuse_block_alloc(fc, for_background)) {
err = -EINTR;
if (wait_event_killable_exclusive(fc->blocked_waitq,
!fuse_block_alloc(fc, for_background)))
if (wait_event_state_exclusive(fc->blocked_waitq,
!fuse_block_alloc(fc, for_background),
(TASK_KILLABLE | TASK_FREEZABLE)))
goto out;
}
/* Matches smp_wmb() in fuse_set_initialized() */