Merge tag 'for-linus-20170825' of git://git.infradead.org/linux-mtd

[mirror_ubuntu-artful-kernel.git] / fs / btrfs / inode.c

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 95c212037095fea727f4a35ea19d9d7e54ad8cfe..24bcd5cd9cf2fc680cc7ed32fb58cd254bb055b5 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7924,11 +7924,12 @@ err:
        return ret;
 }
 
-static inline int submit_dio_repair_bio(struct inode *inode, struct bio *bio,
-                                       int mirror_num)
+static inline blk_status_t submit_dio_repair_bio(struct inode *inode,
+                                                struct bio *bio,
+                                                int mirror_num)
 {
        struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
-       int ret;
+       blk_status_t ret;
 
        BUG_ON(bio_op(bio) == REQ_OP_WRITE);
 
@@ -7980,10 +7981,10 @@ static int btrfs_check_dio_repairable(struct inode *inode,
        return 1;
 }
 
-static int dio_read_error(struct inode *inode, struct bio *failed_bio,
-                       struct page *page, unsigned int pgoff,
-                       u64 start, u64 end, int failed_mirror,
-                       bio_end_io_t *repair_endio, void *repair_arg)
+static blk_status_t dio_read_error(struct inode *inode, struct bio *failed_bio,
+                                  struct page *page, unsigned int pgoff,
+                                  u64 start, u64 end, int failed_mirror,
+                                  bio_end_io_t *repair_endio, void *repair_arg)
 {
        struct io_failure_record *failrec;
        struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
@@ -7993,18 +7994,19 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio,
        int read_mode = 0;
        int segs;
        int ret;
+       blk_status_t status;
 
        BUG_ON(bio_op(failed_bio) == REQ_OP_WRITE);
 
        ret = btrfs_get_io_failure_record(inode, start, end, &failrec);
        if (ret)
-               return ret;
+               return errno_to_blk_status(ret);
 
        ret = btrfs_check_dio_repairable(inode, failed_bio, failrec,
                                         failed_mirror);
        if (!ret) {
                free_io_failure(failure_tree, io_tree, failrec);
-               return -EIO;
+               return BLK_STS_IOERR;
        }
 
        segs = bio_segments(failed_bio);
@@ -8022,13 +8024,13 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio,
                    "Repair DIO Read Error: submitting new dio read[%#x] to this_mirror=%d, in_validation=%d\n",
                    read_mode, failrec->this_mirror, failrec->in_validation);
 
-       ret = submit_dio_repair_bio(inode, bio, failrec->this_mirror);
-       if (ret) {
+       status = submit_dio_repair_bio(inode, bio, failrec->this_mirror);
+       if (status) {
                free_io_failure(failure_tree, io_tree, failrec);
                bio_put(bio);
        }
 
-       return ret;
+       return status;
 }
 
 struct btrfs_retry_complete {
@@ -8065,8 +8067,8 @@ end:
        bio_put(bio);
 }
 
-static int __btrfs_correct_data_nocsum(struct inode *inode,
-                                      struct btrfs_io_bio *io_bio)
+static blk_status_t __btrfs_correct_data_nocsum(struct inode *inode,
+                                               struct btrfs_io_bio *io_bio)
 {
        struct btrfs_fs_info *fs_info;
        struct bio_vec bvec;
@@ -8076,8 +8078,8 @@ static int __btrfs_correct_data_nocsum(struct inode *inode,
        unsigned int pgoff;
        u32 sectorsize;
        int nr_sectors;
-       int ret;
-       int err = 0;
+       blk_status_t ret;
+       blk_status_t err = BLK_STS_OK;
 
        fs_info = BTRFS_I(inode)->root->fs_info;
        sectorsize = fs_info->sectorsize;
@@ -8183,11 +8185,12 @@ static blk_status_t __btrfs_subio_endio_read(struct inode *inode,
        int csum_pos;
        bool uptodate = (err == 0);
        int ret;
+       blk_status_t status;
 
        fs_info = BTRFS_I(inode)->root->fs_info;
        sectorsize = fs_info->sectorsize;
 
-       err = 0;
+       err = BLK_STS_OK;
        start = io_bio->logical;
        done.inode = inode;
        io_bio->bio.bi_iter = io_bio->iter;
@@ -8209,12 +8212,12 @@ try_again:
                done.start = start;
                init_completion(&done.done);
 
-               ret = dio_read_error(inode, &io_bio->bio, bvec.bv_page,
-                               pgoff, start, start + sectorsize - 1,
-                               io_bio->mirror_num,
-                               btrfs_retry_endio, &done);
-               if (ret) {
-                       err = errno_to_blk_status(ret);
+               status = dio_read_error(inode, &io_bio->bio, bvec.bv_page,
+                                       pgoff, start, start + sectorsize - 1,
+                                       io_bio->mirror_num, btrfs_retry_endio,
+                                       &done);
+               if (status) {
+                       err = status;
                        goto next;
                }
 
@@ -8250,7 +8253,7 @@ static blk_status_t btrfs_subio_endio_read(struct inode *inode,
                if (unlikely(err))
                        return __btrfs_correct_data_nocsum(inode, io_bio);
                else
-                       return 0;
+                       return BLK_STS_OK;
        } else {
                return __btrfs_subio_endio_read(inode, io_bio, err);
        }
@@ -8423,9 +8426,9 @@ static inline blk_status_t btrfs_lookup_and_bind_dio_csum(struct inode *inode,
        return 0;
 }
 
-static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode,
-                                        u64 file_offset, int skip_sum,
-                                        int async_submit)
+static inline blk_status_t
+__btrfs_submit_dio_bio(struct bio *bio, struct inode *inode, u64 file_offset,
+                      int skip_sum, int async_submit)
 {
        struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
        struct btrfs_dio_private *dip = bio->bi_private;
@@ -8488,6 +8491,7 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip,
        int clone_offset = 0;
        int clone_len;
        int ret;
+       blk_status_t status;
 
        map_length = orig_bio->bi_iter.bi_size;
        submit_len = map_length;
@@ -8537,9 +8541,9 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip,
                 */
                atomic_inc(&dip->pending_bios);
 
-               ret = __btrfs_submit_dio_bio(bio, inode, file_offset, skip_sum,
-                                            async_submit);
-               if (ret) {
+               status = __btrfs_submit_dio_bio(bio, inode, file_offset, skip_sum,
+                                               async_submit);
+               if (status) {
                        bio_put(bio);
                        atomic_dec(&dip->pending_bios);
                        goto out_err;
@@ -8557,9 +8561,9 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip,
        } while (submit_len > 0);
 
 submit:
-       ret = __btrfs_submit_dio_bio(bio, inode, file_offset, skip_sum,
-                                    async_submit);
-       if (!ret)
+       status = __btrfs_submit_dio_bio(bio, inode, file_offset, skip_sum,
+                                       async_submit);
+       if (!status)
                return 0;
 
        bio_put(bio);