8b8cf4ece6
This also fixes a minor issue that was missed in the initial review; the layout of the MFD_HUGE_* flags is actually not 1:1 bit:flag -- it instead borrowed the Linux convention of how this is laid out since it was originally implemented on Linux, the top 6 bits represent the shift required for the requested page size. This allows us to remove the flag <-> pgsize mapping table and simplify the logic just prior to validation of the requested page size. While we're here, fix two small nits: - HUGETLB memfd shouldn't exhibit the SHM_GROW_ON_WRITE behavior. We can only grow largepage shm by appropriately aligned (i.e. requested pagesize) sizes, so it can't work in the typical/sane fashion. Furthermore, Linux does the same, so let's be compatible. - We don't allow MFD_HUGETLB without specifying a pagesize, so no need to check for that later. Reviewed by: kib (slightly earlier version) |
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| arm | ||
| capability | ||
| compat-43 | ||
| db | ||
| gdtoa | ||
| gen | ||
| gmon | ||
| i386 | ||
| iconv | ||
| include | ||
| inet | ||
| isc | ||
| locale | ||
| md | ||
| mips | ||
| nameser | ||
| net | ||
| nls | ||
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| powerpcspe | ||
| quad | ||
| regex | ||
| resolv | ||
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| secure | ||
| softfloat | ||
| stdio | ||
| stdlib | ||
| stdtime | ||
| string | ||
| sys | ||
| tests | ||
| uuid | ||
| x86 | ||
| xdr | ||
| yp | ||
| libc_nossp.ldscript | ||
| libc.ldscript | ||
| Makefile | ||
| Makefile.depend | ||
| Makefile.depend.options | ||
| Versions.def | ||