proc: less memory for /proc/*/map_files readdir

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dentry name can be evaluated later, right before calling into VFS.

Also, spend less time under ->mmap_sem.

Link: http://lkml.kernel.org/r/20171110163034.GA2534@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Alexey Dobriyan 2018-02-06 15:37:06 -08:00 • committed by Linus Torvalds

parent 593bc695a1

commit 20d28cde55

1 changed files with 9 additions and 6 deletions

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fs/proc/base.c

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