nvme: retry commands on EAGAIN and EINTR#2797
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igaw wants to merge 2 commits intolinux-nvme:masterfrom
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nvme: retry commands on EAGAIN and EINTR#2797igaw wants to merge 2 commits intolinux-nvme:masterfrom
igaw wants to merge 2 commits intolinux-nvme:masterfrom
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And this also wants reverted. |
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Looks good. (By the way seems the commit changes can be split to some patches.) |
Add a helper for catching Ctrl-C from the user. Signed-off-by: Daniel Wagner <[email protected]>
The kernel started to return EAGAIN and EINTR. It is quiet likely that this was possible before but it happened not so often. Thus for users of nvme-cli it is a behavior change. The first attempt was to handle this in libnvme itself. But it turns out we can't just blindly retry. It is necessary to check if the user has pressed Ctrl-C to terminate the program. Adding a signal handler inside the library is a no go. Thus add the retry logic to nvme-cli itself. Signed-off-by: Daniel Wagner <[email protected]>
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Oh, did something stupid with this PR and now I can't reopen it. |
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The kernel started to return EAGAIN and EINTR. It is quiet likely that this was possible before but it happened not so often. Thus for users of nvme-cli it is a behavior change.
The first attempt was to handle this in libnvme itself. But it turns out we can't just blindly retry. It is necessary to check if the user has pressed Ctrl-C to terminate the program. Adding a signal handler inside the library is a no go. Thus add the retry logic to nvme-cli itself.
Fixes: #2760 #2781 #2775