[PATCH v6 15/20] fs: have call_fsync call filemap_report_wb_err if FS_WB_ERRSEQ is set
From: Jeff Layton <hidden>
Date: 2017-06-12 12:23:11
Also in:
linux-btrfs, linux-ext4, linux-fsdevel, linux-mm, linux-xfs
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Allow filesystems to opt-in to a final check of wb_err if FS_WB_ERRSEQ is set. Technically, we could just plumb these calls into all of the fsync operations, but I think this means less code, changes and churn. Signed-off-by: Jeff Layton <redacted> --- include/linux/fs.h | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 17ba6284ab14..ef3feeec80b2 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h@@ -1742,12 +1742,6 @@ static inline int call_mmap(struct file *file, struct vm_area_struct *vma) return file->f_op->mmap(file, vma); } -static inline int call_fsync(struct file *file, loff_t start, loff_t end, - int datasync) -{ - return file->f_op->fsync(file, start, end, datasync); -} - ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, unsigned long nr_segs, unsigned long fast_segs, struct iovec *fast_pointer,
@@ -2583,6 +2577,20 @@ static inline errseq_t filemap_sample_wb_err(struct address_space *mapping) return errseq_sample(&mapping->wb_err); } +static inline int call_fsync(struct file *file, loff_t start, loff_t end, + int datasync) +{ + int ret; + + ret = file->f_op->fsync(file, start, end, datasync); + if (file->f_mapping->host->i_sb->s_type->fs_flags & FS_WB_ERRSEQ) { + int ret2 = filemap_report_wb_err(file); + if (!ret) + ret = ret2; + } + return ret; +} + extern int vfs_fsync_range(struct file *file, loff_t start, loff_t end, int datasync); extern int vfs_fsync(struct file *file, int datasync);
--
2.13.0