diff options
Diffstat (limited to 'fs/ntfs/aops.c')
| -rw-r--r-- | fs/ntfs/aops.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/ntfs/aops.c b/fs/ntfs/aops.c index 2a7cba258cca..6241c4cfbe28 100644 --- a/fs/ntfs/aops.c +++ b/fs/ntfs/aops.c @@ -355,6 +355,7 @@ static int ntfs_readpage(struct file *file, struct page *page) u32 attr_len; int err = 0; +retry_readpage: BUG_ON(!PageLocked(page)); /* * This can potentially happen because we clear PageUptodate() during @@ -408,6 +409,14 @@ static int ntfs_readpage(struct file *file, struct page *page) err = PTR_ERR(mrec); goto err_out; } + /* + * If a parallel write made the attribute non-resident, drop the mft + * record and retry the readpage. + */ + if (unlikely(NInoNonResident(ni))) { + unmap_mft_record(base_ni); + goto retry_readpage; + } ctx = ntfs_attr_get_search_ctx(base_ni, mrec); if (unlikely(!ctx)) { err = -ENOMEM; @@ -1248,6 +1257,7 @@ static int ntfs_writepage(struct page *page, struct writeback_control *wbc) u32 attr_len; int err; +retry_writepage: BUG_ON(!PageLocked(page)); i_size = i_size_read(vi); /* Is the page fully outside i_size? (truncate in progress) */ @@ -1338,6 +1348,14 @@ static int ntfs_writepage(struct page *page, struct writeback_control *wbc) ctx = NULL; goto err_out; } + /* + * If a parallel write made the attribute non-resident, drop the mft + * record and retry the writepage. + */ + if (unlikely(NInoNonResident(ni))) { + unmap_mft_record(base_ni); + goto retry_writepage; + } ctx = ntfs_attr_get_search_ctx(base_ni, m); if (unlikely(!ctx)) { err = -ENOMEM; |