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authorArtur Paszkiewicz <artur.paszkiewicz@intel.com>2017-05-08 11:56:55 +0200
committerShaohua Li <shli@fb.com>2017-05-08 10:32:59 -0700
commit2214c260c72b0bd94e6c1c19bf451686212025d3 (patch)
tree829a3494857d6bd61c38171a39e2e207de585e38 /include/pcmcia
parent3d05f3aed5d721c2c77d20288c29ab26c6193ed5 (diff)
md: don't return -EAGAIN in md_allow_write for external metadata arrays
This essentially reverts commit b5470dc5fc18 ("md: resolve external metadata handling deadlock in md_allow_write") with some adjustments. Since commit 6791875e2e53 ("md: make reconfig_mutex optional for writes to md sysfs files.") changing array_state to 'active' does not use mddev_lock() and will not cause a deadlock with md_allow_write(). This revert simplifies userspace tools that write to sysfs attributes like "stripe_cache_size" or "consistency_policy" because it removes the need for special handling for external metadata arrays, checking for EAGAIN and retrying the write. Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
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