diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-09-04 23:35:43 -0400 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-10-26 14:12:28 -0400 |
| commit | 16474ac07713e2eb44f9d13b253df24a2ab29858 (patch) | |
| tree | ae4cc8f86cc78521766dafb10993308e75e036f9 /include/linux | |
| parent | d2417516bd8b3dd1db096a9b040b0264d8052339 (diff) | |
mm/page-flags: Allow accessing PageError on tail pages
We track whether a page has had a read error for the entire THP, just like
we track Uptodate and Dirty. This lets, eg, generic_file_buffered_read()
continue to work on the appropriate subpage of the THP without
modification.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/page-flags.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 4f6ba9379112..eb3a9796de8e 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -328,7 +328,8 @@ static inline int TestClearPage##uname(struct page *page) { return 0; } __PAGEFLAG(Locked, locked, PF_NO_TAIL) PAGEFLAG(Waiters, waiters, PF_ONLY_HEAD) __CLEARPAGEFLAG(Waiters, waiters, PF_ONLY_HEAD) -PAGEFLAG(Error, error, PF_NO_TAIL) TESTCLEARFLAG(Error, error, PF_NO_TAIL) +PAGEFLAG(Error, error, PF_HEAD) + TESTCLEARFLAG(Error, error, PF_HEAD) PAGEFLAG(Referenced, referenced, PF_HEAD) TESTCLEARFLAG(Referenced, referenced, PF_HEAD) __SETPAGEFLAG(Referenced, referenced, PF_HEAD) |