diff options
| -rw-r--r-- | drivers/dax/device.c | 1 | ||||
| -rw-r--r-- | fs/file_table.c | 1 | ||||
| -rw-r--r-- | fs/open.c | 3 | ||||
| -rw-r--r-- | fs/sync.c | 6 | ||||
| -rw-r--r-- | include/linux/fs.h | 16 | ||||
| -rw-r--r-- | include/linux/pagemap.h | 5 |
6 files changed, 27 insertions, 5 deletions
diff --git a/drivers/dax/device.c b/drivers/dax/device.c index 1af823b2fe6b..4c0af2eb7e19 100644 --- a/drivers/dax/device.c +++ b/drivers/dax/device.c @@ -377,6 +377,7 @@ static int dax_open(struct inode *inode, struct file *filp) inode->i_mapping->a_ops = &dev_dax_aops; filp->f_mapping = inode->i_mapping; filp->f_wb_err = filemap_sample_wb_err(filp->f_mapping); + filp->f_sb_err = file_sample_sb_err(filp); filp->private_data = dev_dax; inode->i_flags = S_DAX; diff --git a/fs/file_table.c b/fs/file_table.c index 30d55c9a1744..676e620948d2 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -198,6 +198,7 @@ static struct file *alloc_file(const struct path *path, int flags, file->f_inode = path->dentry->d_inode; file->f_mapping = path->dentry->d_inode->i_mapping; file->f_wb_err = filemap_sample_wb_err(file->f_mapping); + file->f_sb_err = file_sample_sb_err(file); if ((file->f_mode & FMODE_READ) && likely(fop->read || fop->read_iter)) file->f_mode |= FMODE_CAN_READ; diff --git a/fs/open.c b/fs/open.c index 719b320ede52..d9467a8a7f6a 100644 --- a/fs/open.c +++ b/fs/open.c @@ -743,9 +743,8 @@ static int do_dentry_open(struct file *f, path_get(&f->f_path); f->f_inode = inode; f->f_mapping = inode->i_mapping; - - /* Ensure that we skip any errors that predate opening of the file */ f->f_wb_err = filemap_sample_wb_err(f->f_mapping); + f->f_sb_err = file_sample_sb_err(f); if (unlikely(f->f_flags & O_PATH)) { f->f_mode = FMODE_PATH | FMODE_OPENED; diff --git a/fs/sync.c b/fs/sync.c index 4d1ff010bc5a..c6f6f5be5682 100644 --- a/fs/sync.c +++ b/fs/sync.c @@ -161,7 +161,7 @@ SYSCALL_DEFINE1(syncfs, int, fd) { struct fd f = fdget(fd); struct super_block *sb; - int ret; + int ret, ret2; if (!f.file) return -EBADF; @@ -171,8 +171,10 @@ SYSCALL_DEFINE1(syncfs, int, fd) ret = sync_filesystem(sb); up_read(&sb->s_umount); + ret2 = errseq_check_and_advance(&sb->s_wb_err, &f.file->f_sb_err); + fdput(f); - return ret; + return ret ? ret : ret2; } /** diff --git a/include/linux/fs.h b/include/linux/fs.h index 45cc10cdf6dd..f2fb5b7406b9 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -976,6 +976,7 @@ struct file { #endif /* #ifdef CONFIG_EPOLL */ struct address_space *f_mapping; errseq_t f_wb_err; + errseq_t f_sb_err; /* for syncfs */ } __randomize_layout __attribute__((aligned(4))); /* lest something weird decides that 2 is OK */ @@ -1520,6 +1521,9 @@ struct super_block { /* Being remounted read-only */ int s_readonly_remount; + /* per-sb errseq_t for reporting writeback errors via syncfs */ + errseq_t s_wb_err; + /* AIO completions deferred from interrupt context */ struct workqueue_struct *s_dio_done_wq; struct hlist_head s_pins; @@ -2827,6 +2831,18 @@ static inline errseq_t filemap_sample_wb_err(struct address_space *mapping) return errseq_sample(&mapping->wb_err); } +/** + * file_sample_sb_err - sample the current errseq_t to test for later errors + * @mapping: mapping to be sampled + * + * Grab the most current superblock-level errseq_t value for the given + * struct file. + */ +static inline errseq_t file_sample_sb_err(struct file *file) +{ + return errseq_sample(&file->f_path.dentry->d_sb->s_wb_err); +} + static inline int filemap_nr_thps(struct address_space *mapping) { #ifdef CONFIG_READ_ONLY_THP_FOR_FS diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index a8f7bd8ea1c6..d4409b13747e 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -51,7 +51,10 @@ static inline void mapping_set_error(struct address_space *mapping, int error) return; /* Record in wb_err for checkers using errseq_t based tracking */ - filemap_set_wb_err(mapping, error); + __filemap_set_wb_err(mapping, error); + + /* Record it in superblock */ + errseq_set(&mapping->host->i_sb->s_wb_err, error); /* Record it in flags for now, for legacy callers */ if (error == -ENOSPC) |