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authorArnd Bergmann <arnd@arndb.de>2019-03-24 20:44:51 +0100
committerRichard Weinberger <richard@nod.at>2019-05-07 21:36:39 +0200
commitf4844b35d68ab49c41d542c501fffb46ad81009a (patch)
treeba3a0defe190b28fabc143601fe5a79f45b511bc /fs/ubifs/super.c
parentubifs: remove unused function __ubifs_shash_final (diff)
downloadlinux-f4844b35d68ab49c41d542c501fffb46ad81009a.tar.xz
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ubifs: work around high stack usage with clang
Building this file with clang can result in large stack usage as seen from this warning: fs/ubifs/auth.c:78:5: error: stack frame size of 1152 bytes in function 'ubifs_prepare_auth_node' The problem is that inlining ubifs_hash_calc_hmac() leads to two SHASH_DESC_ON_STACK() blocks in the same function, and clang for some reason does not reuse the stack space as it should. Putting the first declaration into a separate basic block avoids this problem and reduces the stack allocation to 640 bytes. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs/super.c')
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