diff options
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/ext4.h | 13 | ||||
| -rw-r--r-- | fs/ext4/inode.c | 4 |
2 files changed, 15 insertions, 2 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 17cc2dc13174..2348be3d66b7 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -3344,6 +3344,19 @@ static inline void ext4_clear_io_unwritten_flag(ext4_io_end_t *io_end) extern const struct iomap_ops ext4_iomap_ops; +static inline int ext4_buffer_uptodate(struct buffer_head *bh) +{ + /* + * If the buffer has the write error flag, we have failed + * to write out data in the block. In this case, we don't + * have to read the block because we may read the old data + * successfully. + */ + if (!buffer_uptodate(bh) && buffer_write_io_error(bh)) + set_buffer_uptodate(bh); + return buffer_uptodate(bh); +} + #endif /* __KERNEL__ */ #define EFSBADCRC EBADMSG /* Bad CRC detected */ diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 4b92c7603907..9db896fc6af8 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1024,7 +1024,7 @@ struct buffer_head *ext4_bread(handle_t *handle, struct inode *inode, bh = ext4_getblk(handle, inode, block, map_flags); if (IS_ERR(bh)) return bh; - if (!bh || buffer_uptodate(bh)) + if (!bh || ext4_buffer_uptodate(bh)) return bh; ll_rw_block(REQ_OP_READ, REQ_META | REQ_PRIO, 1, &bh); wait_on_buffer(bh); @@ -1051,7 +1051,7 @@ int ext4_bread_batch(struct inode *inode, ext4_lblk_t block, int bh_count, for (i = 0; i < bh_count; i++) /* Note that NULL bhs[i] is valid because of holes. */ - if (bhs[i] && !buffer_uptodate(bhs[i])) + if (bhs[i] && !ext4_buffer_uptodate(bhs[i])) ll_rw_block(REQ_OP_READ, REQ_META | REQ_PRIO, 1, &bhs[i]); |