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gfs2: Add flocks to glockfd debugfs file
Include flock glocks in the "glockfd" debugfs file. Those are similar to the iopen glocks; while an open file is holding an flock, it is holding the file's flock glock. We cannot take f_fl_mutex in gfs2_glockfd_seq_show_flock() or else dumping the "glockfd" file would block on flock operations. Instead, use the file->f_lock spin lock to protect the f_fl_gh.gh_gl glock pointer. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
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Andreas Gruenbacher
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Jun 29, 2022
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