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md: rearrange recovery_flags
Currently there are lots of flags with the same confusing prefix "MD_REOCVERY_", and there are two main types of flags, sync thread runnng status, I prefer prefix "SYNC_THREAD_", and sync thread action, I perfer prefix "SYNC_ACTION_". For now, rearrange and update comment to improve code readability, there are no functional changes. Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240611132251.1967786-2-yukuai1@huaweicloud.com
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@ -551,22 +551,46 @@ struct mddev {
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};
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};
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enum recovery_flags {
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enum recovery_flags {
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/* flags for sync thread running status */
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/*
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/*
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* If neither SYNC or RESHAPE are set, then it is a recovery.
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* set when one of sync action is set and new sync thread need to be
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* registered, or just add/remove spares from conf.
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*/
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*/
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MD_RECOVERY_RUNNING, /* a thread is running, or about to be started */
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MD_RECOVERY_NEEDED,
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MD_RECOVERY_SYNC, /* actually doing a resync, not a recovery */
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/* sync thread is running, or about to be started */
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MD_RECOVERY_RECOVER, /* doing recovery, or need to try it. */
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MD_RECOVERY_RUNNING,
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MD_RECOVERY_INTR, /* resync needs to be aborted for some reason */
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/* sync thread needs to be aborted for some reason */
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MD_RECOVERY_DONE, /* thread is done and is waiting to be reaped */
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MD_RECOVERY_INTR,
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MD_RECOVERY_NEEDED, /* we might need to start a resync/recover */
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/* sync thread is done and is waiting to be unregistered */
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MD_RECOVERY_REQUESTED, /* user-space has requested a sync (used with SYNC) */
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MD_RECOVERY_DONE,
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MD_RECOVERY_CHECK, /* user-space request for check-only, no repair */
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/* running sync thread must abort immediately, and not restart */
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MD_RECOVERY_RESHAPE, /* A reshape is happening */
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MD_RECOVERY_FROZEN,
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MD_RECOVERY_FROZEN, /* User request to abort, and not restart, any action */
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/* waiting for pers->start() to finish */
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MD_RECOVERY_ERROR, /* sync-action interrupted because io-error */
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MD_RECOVERY_WAIT,
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MD_RECOVERY_WAIT, /* waiting for pers->start() to finish */
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/* interrupted because io-error */
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MD_RESYNCING_REMOTE, /* remote node is running resync thread */
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MD_RECOVERY_ERROR,
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/* flags determines sync action */
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/* if just this flag is set, action is resync. */
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MD_RECOVERY_SYNC,
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/*
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* paired with MD_RECOVERY_SYNC, if MD_RECOVERY_CHECK is not set,
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* action is repair, means user requested resync.
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*/
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MD_RECOVERY_REQUESTED,
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/*
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* paired with MD_RECOVERY_SYNC and MD_RECOVERY_REQUESTED, action is
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* check.
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*/
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MD_RECOVERY_CHECK,
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/* recovery, or need to try it */
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MD_RECOVERY_RECOVER,
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/* reshape */
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MD_RECOVERY_RESHAPE,
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/* remote node is running resync thread */
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MD_RESYNCING_REMOTE,
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};
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};
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enum md_ro_state {
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enum md_ro_state {
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