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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-07 18:39:15 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-07 18:39:15 -0700 |
commit | 33198c165b7afd500f7b6b7680ef994296805ef0 (patch) | |
tree | 4c56417bad2cc75e5d76e0e66fc6896b38a872b2 /mm | |
parent | 3ea4fcc5fe7f990266ddd3139ef5ae66d625bd13 (diff) | |
parent | 0f41074a65757b46acbdd4293f0de8a70b147406 (diff) | |
download | linux-33198c165b7afd500f7b6b7680ef994296805ef0.tar.bz2 |
Merge tag 'for-linus-v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull Writeback error handling fixes from Jeff Layton:
"The main rationale for all of these changes is to tighten up writeback
error reporting to userland. There are many ways now that writeback
errors can be lost, such that fsync/fdatasync/msync return 0 when
writeback actually failed.
This pile contains a small set of cleanups and writeback error
handling fixes that I was able to break off from the main pile (#2).
Two of the patches in this pile are trivial. The exceptions are the
patch to fix up error handling in write_one_page, and the patch to
make JFS pay attention to write_one_page errors"
* tag 'for-linus-v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
fs: remove call_fsync helper function
mm: clean up error handling in write_one_page
JFS: do not ignore return code from write_one_page()
mm: drop "wait" parameter from write_one_page()
Diffstat (limited to 'mm')
-rw-r--r-- | mm/page-writeback.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 8989eada0ef7..0b60cc7ddac2 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2366,15 +2366,15 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc) } /** - * write_one_page - write out a single page and optionally wait on I/O + * write_one_page - write out a single page and wait on I/O * @page: the page to write - * @wait: if true, wait on writeout * * The page must be locked by the caller and will be unlocked upon return. * - * write_one_page() returns a negative error code if I/O failed. + * Note that the mapping's AS_EIO/AS_ENOSPC flags will be cleared when this + * function returns. */ -int write_one_page(struct page *page, int wait) +int write_one_page(struct page *page) { struct address_space *mapping = page->mapping; int ret = 0; @@ -2385,21 +2385,20 @@ int write_one_page(struct page *page, int wait) BUG_ON(!PageLocked(page)); - if (wait) - wait_on_page_writeback(page); + wait_on_page_writeback(page); if (clear_page_dirty_for_io(page)) { get_page(page); ret = mapping->a_ops->writepage(page, &wbc); - if (ret == 0 && wait) { + if (ret == 0) wait_on_page_writeback(page); - if (PageError(page)) - ret = -EIO; - } put_page(page); } else { unlock_page(page); } + + if (!ret) + ret = filemap_check_errors(mapping); return ret; } EXPORT_SYMBOL(write_one_page); |