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| author |   Jan Kara <jack@suse.cz> | 2018-01-07 16:38:43 -0500 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2018-01-07 16:38:43 -0500 |
| commit | c0b24625979284dd212423320fe1c84fe244ed7f (patch) | |
| tree | 92824567101689de2900f33446ca5db723394e48 /include/linux/dax.h | |
| parent | mbcache: revert "fs/mbcache.c: make count_objects() more robust" (diff) | |
| download | linux-dev-c0b24625979284dd212423320fe1c84fe244ed7f.tar.xz linux-dev-c0b24625979284dd212423320fe1c84fe244ed7f.zip | |
dax: pass detailed error code from dax_iomap_fault()
Ext4 needs to pass through error from its iomap handler to the page
fault handler so that it can properly detect ENOSPC and force
transaction commit and retry the fault (and block allocation). Add
argument to dax_iomap_fault() for passing such error.
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'include/linux/dax.h')
| -rw-r--r-- | include/linux/dax.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h index 5258346c558c..0185ecdae135 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -96,7 +96,7 @@ bool dax_write_cache_enabled(struct dax_device *dax_dev); ssize_t dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter, const struct iomap_ops *ops); int dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size, - pfn_t *pfnp, const struct iomap_ops *ops); + pfn_t *pfnp, int *errp, const struct iomap_ops *ops); int dax_finish_sync_fault(struct vm_fault *vmf, enum page_entry_size pe_size, pfn_t pfn); int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index); |