diff options
| author | Mete Durlu <meted@linux.ibm.com> | 2024-07-04 15:10:08 +0300 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2024-07-10 20:50:45 +0300 |
| commit | f4493954215ceb8b22aca3ee6b10c6172f20a9fc (patch) | |
| tree | 0e05b5054b2d3376ba8a111c492f28c267bd94a3 /arch/s390/hypfs/hypfs_dbfs.c | |
| parent | 97999f8c62a43cf2af5d725b045b82f9b47d83ea (diff) | |
| download | linux-f4493954215ceb8b22aca3ee6b10c6172f20a9fc.tar.xz | |
s390/hypfs_diag: Diag204 busy loop
When diag204 busy-indiciation facility is installed and diag204 is
returning busy, hypfs diag204 handler now does an interruptable busy
wait until diag204 is no longer busy. If there is a signal pending, call
would be restarted with -ERESTARTSYSCALL, except for fatal signals.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Tobias Huschle <huschle@linux.ibm.com>
Signed-off-by: Mete Durlu <meted@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/hypfs/hypfs_dbfs.c')
| -rw-r--r-- | arch/s390/hypfs/hypfs_dbfs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/hypfs/hypfs_dbfs.c b/arch/s390/hypfs/hypfs_dbfs.c index 4024599eb448..0e855c5e91c5 100644 --- a/arch/s390/hypfs/hypfs_dbfs.c +++ b/arch/s390/hypfs/hypfs_dbfs.c @@ -39,7 +39,9 @@ static ssize_t dbfs_read(struct file *file, char __user *buf, return 0; df = file_inode(file)->i_private; - mutex_lock(&df->lock); + if (mutex_lock_interruptible(&df->lock)) + return -ERESTARTSYS; + data = hypfs_dbfs_data_alloc(df); if (!data) { mutex_unlock(&df->lock); |