The patch titled
Subject: tmpfs: three tweaks to creation time patch
has been added to the -mm tree. Its filename is
tmpfs-support-for-file-creation-time-fix.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/tmpfs-support-for-file-creation-time-fix.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/tmpfs-support-for-file-creation-time-fix.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Hugh Dickins <hughd@xxxxxxxxxx>
Subject: tmpfs: three tweaks to creation time patch
Thank you to Xavier Roche for his tmpfs file creation time patch. Please
apply these 3 tweaks on top (and fold in when sending to Linus):
1. Move vfs_inode back to being last element of shmem_inode_info.
2. Remove unnecessary parentheses from condition in shmem_getattr().
3. Using shmem_getattr() on other file types than regular requires that
shmem_is_huge() check type, to stop incorrect HPAGE_PMD_SIZE blksize.
Link: https://lkml.kernel.org/r/b954973a-b8d1-cab8-63bd-6ea8063de3@xxxxxxxxxx
Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Xavier Roche <xavier.roche@xxxxxxxxxxx>
Cc: Jean Delvare <jdelvare@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/shmem_fs.h | 2 +-
mm/shmem.c | 7 +++----
2 files changed, 4 insertions(+), 5 deletions(-)
--- a/include/linux/shmem_fs.h~tmpfs-support-for-file-creation-time-fix
+++ a/include/linux/shmem_fs.h
@@ -24,8 +24,8 @@ struct shmem_inode_info {
struct shared_policy policy; /* NUMA memory alloc policy */
struct simple_xattrs xattrs; /* list of xattrs */
atomic_t stop_eviction; /* hold when working on inode */
- struct inode vfs_inode;
struct timespec64 i_crtime; /* file creation time */
+ struct inode vfs_inode;
};
struct shmem_sb_info {
--- a/mm/shmem.c~tmpfs-support-for-file-creation-time-fix
+++ a/mm/shmem.c
@@ -476,6 +476,8 @@ bool shmem_is_huge(struct vm_area_struct
{
loff_t i_size;
+ if (!S_ISREG(inode->i_mode))
+ return false;
if (shmem_huge == SHMEM_HUGE_DENY)
return false;
if (vma && ((vma->vm_flags & VM_NOHUGEPAGE) ||
@@ -1061,7 +1063,7 @@ static int shmem_getattr(struct user_nam
if (shmem_is_huge(NULL, inode, 0))
stat->blksize = HPAGE_PMD_SIZE;
- if ((request_mask & STATX_BTIME)) {
+ if (request_mask & STATX_BTIME) {
stat->result_mask |= STATX_BTIME;
stat->btime.tv_sec = info->i_crtime.tv_sec;
stat->btime.tv_nsec = info->i_crtime.tv_nsec;
@@ -1860,9 +1862,6 @@ repeat:
return 0;
}
- /* Never use a huge page for shmem_symlink() */
- if (S_ISLNK(inode->i_mode))
- goto alloc_nohuge;
if (!shmem_is_huge(vma, inode, index))
goto alloc_nohuge;
_
Patches currently in -mm which might be from hughd@xxxxxxxxxx are
tmpfs-support-for-file-creation-time-fix.patch
