kernel/fs/fat/dir.c, branch linux-5.1.y

Merge branch 'akpm' (patches from Andrew)

2019-01-05T17:16:18Z

Merge more updates from Andrew Morton: - procfs updates - various misc bits - lib/ updates - epoll updates - autofs - fatfs - a few more MM bits * emailed patches from Andrew Morton : (58 commits) mm/page_io.c: fix polled swap page in checkpatch: add Co-developed-by to signature tags docs: fix Co-Developed-by docs drivers/base/platform.c: kmemleak ignore a known leak fs: don't open code lru_to_page() fs/: remove caller signal_pending branch predictions mm/: remove caller signal_pending branch predictions arch/arc/mm/fault.c: remove caller signal_pending_branch predictions kernel/sched/: remove caller signal_pending branch predictions kernel/locking/mutex.c: remove caller signal_pending branch predictions mm: select HAVE_MOVE_PMD on x86 for faster mremap mm: speed up mremap by 20x on large regions mm: treewide: remove unused address argument from pte_alloc functions initramfs: cleanup incomplete rootfs scripts/gdb: fix lx-version string output kernel/kcov.c: mark write_comp_data() as notrace kernel/sysctl: add panic_print into sysctl panic: add options to print system info when panic happens bfs: extra sanity checking and static inode bitmap exec: separate MM_ANONPAGES and RLIMIT_STACK accounting ...

fat: new inline functions to determine the FAT variant (32, 16 or 12)

2019-01-04T21:13:47Z

This patch introduces 3 new inline functions - is_fat12, is_fat16 and is_fat32, and replaces every occurrence in the code in which the FS variant (whether this is FAT12, FAT16 or FAT32) was previously checked using msdos_sb_info->fat_bits. Link: http://lkml.kernel.org/r/1544990640-11604-4-git-send-email-carmeli.tamir@gmail.com Signed-off-by: Carmeli Tamir Acked-by: OGAWA Hirofumi Reviewed-by: Sergey Senozhatsky Cc: Johannes Thumshirn Cc: Bart Van Assche Cc: Martin K. Petersen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Remove 'type' argument from access_ok() function

2019-01-04T02:57:57Z

Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument of the user address range verification function since we got rid of the old racy i386-only code to walk page tables by hand. It existed because the original 80386 would not honor the write protect bit when in kernel mode, so you had to do COW by hand before doing any user access. But we haven't supported that in a long time, and these days the 'type' argument is a purely historical artifact. A discussion about extending 'user_access_begin()' to do the range checking resulted this patch, because there is no way we're going to move the old VERIFY_xyz interface to that model. And it's best done at the end of the merge window when I've done most of my merges, so let's just get this done once and for all. This patch was mostly done with a sed-script, with manual fix-ups for the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form. There were a couple of notable cases: - csky still had the old "verify_area()" name as an alias. - the iter_iov code had magical hardcoded knowledge of the actual values of VERIFY_{READ,WRITE} (not that they mattered, since nothing really used it) - microblaze used the type argument for a debug printout but other than those oddities this should be a total no-op patch. I tried to fix up all architectures, did fairly extensive grepping for access_ok() uses, and the changes are trivial, but I may have missed something. Any missed conversion should be trivially fixable, though. Signed-off-by: Linus Torvalds

fat: change timestamp updates to use fat_truncate_time

2018-10-31T15:54:14Z

Convert the inode timestamp updates to use fat_truncate_time. Link: http://lkml.kernel.org/r/2663d3083c4dd62f00b64612c8eaf5542bb05a4c.1538363961.git.sorenson@redhat.com Signed-off-by: Frank Sorenson Acked-by: OGAWA Hirofumi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

fat: expand a slightly out-of-date comment

2018-10-31T15:54:14Z

The file namei.c seems to have been renamed to namei_msdos.c, so I decided to update the comment with the correct name, and expand it a bit to tell the reader what to look for. Link: http://lkml.kernel.org/r/20180928194947.23932-1-mihir@cs.utexas.edu Signed-off-by: Mihir Mehta Acked-by: OGAWA Hirofumi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

fat: propagate 64-bit inode timestamps

2018-08-22T17:52:50Z

Now that we pass down 64-bit timestamps from VFS, we just need to convert that correctly into on-disk timestamps. To make that work correctly, this changes the last use of time_to_tm() in the kernel to time64_to_tm(), which also lets use remove that deprecated interfaces. Similarly, the time_t use in fat_time_fat2unix() truncates the timestamp on the way in, which can be avoided by using types that are wide enough to hold the intermediate values during the conversion. [hirofumi@mail.parknet.co.jp: remove useless temporary variable, needless long long] Link: http://lkml.kernel.org/r/20180619153646.3637529-1-arnd@arndb.de Signed-off-by: Arnd Bergmann Acked-by: OGAWA Hirofumi Cc: Jeff Layton Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

fat: convert to new i_version API

2018-01-29T11:42:20Z

Signed-off-by: Jeff Layton

fat: remove redundant assignment of 0 to slots

2017-11-18T00:10:03Z

The variable slots is being assigned a value of zero that is never read, slots is being updated again a few lines later. Remove this redundant assignment. Cleans clang warning: Value stored to 'slots' is never read Link: http://lkml.kernel.org/r/20171017140258.22536-1-colin.king@canonical.com Signed-off-by: Colin Ian King Acked-by: OGAWA Hirofumi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps

2016-09-28T01:06:22Z

CURRENT_TIME_SEC is not y2038 safe. current_time() will be transitioned to use 64 bit time along with vfs in a separate patch. There is no plan to transistion CURRENT_TIME_SEC to use y2038 safe time interfaces. current_time() will also be extended to use superblock range checking parameters when range checking is introduced. This works because alloc_super() fills in the the s_time_gran in super block to NSEC_PER_SEC. Signed-off-by: Deepa Dinamani Acked-by: Jan Kara Signed-off-by: Al Viro

fat: switch to ->iterate_shared()

2016-05-09T15:41:15Z

... and make that weird ioctl lock directory only shared. Signed-off-by: Al Viro