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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-10 21:06:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-10 21:06:01 -0700
commit2e756758e5cb4ea29cba5865d00fad476ce94a93 (patch)
tree69bf2540a6d458bddb08d01f3aa8e5d0a269635d /mm
parent8dda9957e3a1c871dfbabf84c4760f9b26032442 (diff)
parent96fcaf86c3cb9340015fb475d79ef0a6fcf858ed (diff)
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o: "Many bug fixes and cleanups, and an optimization for case-insensitive lookups" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: fix coverity warning on error path of filename setup ext4: replace ktype default_attrs with default_groups ext4: rename htree_inline_dir_to_tree() to ext4_inlinedir_to_tree() ext4: refactor initialize_dirent_tail() ext4: rename "dirent_csum" functions to use "dirblock" ext4: allow directory holes jbd2: drop declaration of journal_sync_buffer() ext4: use jbd2_inode dirty range scoping jbd2: introduce jbd2_inode dirty range scoping mm: add filemap_fdatawait_range_keep_errors() ext4: remove redundant assignment to node ext4: optimize case-insensitive lookups ext4: make __ext4_get_inode_loc plug ext4: clean up kerneldoc warnigns when building with W=1 ext4: only set project inherit bit for directory ext4: enforce the immutable flag on open files ext4: don't allow any modifications to an immutable file jbd2: fix typo in comment of journal_submit_inode_data_buffers jbd2: fix some print format mistakes ext4: gracefully handle ext4_break_layouts() failure during truncate
Diffstat (limited to 'mm')
-rw-r--r--mm/filemap.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 01e7e0869bba..f1aa20ab8434 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -550,6 +550,28 @@ int filemap_fdatawait_range(struct address_space *mapping, loff_t start_byte,
EXPORT_SYMBOL(filemap_fdatawait_range);
/**
+ * filemap_fdatawait_range_keep_errors - wait for writeback to complete
+ * @mapping: address space structure to wait for
+ * @start_byte: offset in bytes where the range starts
+ * @end_byte: offset in bytes where the range ends (inclusive)
+ *
+ * Walk the list of under-writeback pages of the given address space in the
+ * given range and wait for all of them. Unlike filemap_fdatawait_range(),
+ * this function does not clear error status of the address space.
+ *
+ * Use this function if callers don't handle errors themselves. Expected
+ * call sites are system-wide / filesystem-wide data flushers: e.g. sync(2),
+ * fsfreeze(8)
+ */
+int filemap_fdatawait_range_keep_errors(struct address_space *mapping,
+ loff_t start_byte, loff_t end_byte)
+{
+ __filemap_fdatawait_range(mapping, start_byte, end_byte);
+ return filemap_check_and_keep_errors(mapping);
+}
+EXPORT_SYMBOL(filemap_fdatawait_range_keep_errors);
+
+/**
* file_fdatawait_range - wait for writeback to complete
* @file: file pointing to address space structure to wait for
* @start_byte: offset in bytes where the range starts