[PATCH 6/7] xfs: add configuration handles for specific errors

[Carlos Maiolino <cmaiolino@xxxxxxxxxx>]

From: Dave Chinner <dchinner@xxxxxxxxxx>

now most of the infrastructure is in place, we can start adding
support for configuring specific errors such as ENODEV, ENOSPC, EIO,
etc. Add these error configurations and configure them all to have
appropriate behaviours. That is, all will use the "fail never, fail
at unmount" default except for ENODEV, which is an unrecoverable
error so it will be configured as a "fail fast" error.

Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
---
 fs/xfs/xfs_mount.h |  3 +++
 fs/xfs/xfs_sysfs.c | 20 ++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 0382140..e3b3267 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -49,6 +49,9 @@ enum {
 };
 enum {
        XFS_ERR_DEFAULT,
+       XFS_ERR_EIO,
+       XFS_ERR_ENOSPC,
+       XFS_ERR_ENODEV,
        XFS_ERR_ERRNO_MAX,
 };
 
diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c
index fa291c4..aad3320 100644
--- a/fs/xfs/xfs_sysfs.c
+++ b/fs/xfs/xfs_sysfs.c
@@ -481,6 +481,17 @@ static const struct xfs_error_init 
xfs_error_meta_init[XFS_ERR_ERRNO_MAX] = {
          .max_retries = -1,
          .retry_timeout = 0,
        },
+       { .name = "EIO",
+         .max_retries = -1,
+         .retry_timeout = 0,
+       },
+       { .name = "ENOSPC",
+         .max_retries = -1,
+         .retry_timeout = 0,
+       },
+       { .name = "ENODEV",
+         .max_retries = -1,
+       },
 };
 
 static int
@@ -578,6 +589,15 @@ xfs_error_get_cfg(
        struct xfs_error_cfg    *cfg;
 
        switch (error) {
+       case EIO:
+               cfg = &mp->m_error_cfg[error_class][XFS_ERR_EIO];
+               break;
+       case ENOSPC:
+               cfg = &mp->m_error_cfg[error_class][XFS_ERR_ENOSPC];
+               break;
+       case ENODEV:
+               cfg = &mp->m_error_cfg[error_class][XFS_ERR_ENODEV];
+               break;
        default:
                cfg = &mp->m_error_cfg[error_class][XFS_ERR_DEFAULT];
                break;
-- 
2.4.11