Hello, This is an attempt to go back to this old patch series here : https://lore.kernel.org/lkml/cover.1632909358.git.shreeya.patel@xxxxxxxxxxxxx/ First patch fixes a possible hang when d_add_ci is called from a filesystem's lookup function (like xfs is doing) d_alloc_parallel -> lookup -> d_add_ci -> d_alloc_parallel Second patch solves the issue of having the dcache saving the entry with the same case as it's being looked up instead of saving the real file name from the storage. Please check above thread for motivation on why this should be changed. Some further old discussions here as well: https://patchwork.ozlabs.org/project/linux-ext4/patch/20180924215655.3676-20-krisman@xxxxxxxxxxxxxxx/ I am not sure whether this is the right way to fix this, but I think I have considered all cases discussed in previous threads. Thank you for your review and consideration, Eugen Eugen Hristev (2): fs/dcache: introduce d_alloc_parallel_check_existing ext4: in lookup call d_add_ci if there is a case mismatch fs/dcache.c | 29 +++++++++++++++++++++++------ fs/ext4/namei.c | 13 +++++++++++++ include/linux/dcache.h | 4 ++++ 3 files changed, 40 insertions(+), 6 deletions(-) -- 2.34.1
