diff options
| author | Jan Kara <jack@suse.cz> | 2021-04-13 19:10:37 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2021-07-13 15:29:01 +0300 |
| commit | edc6d01bad7331b376a1a8f5c6d8e9221e9f9f37 (patch) | |
| tree | 5cca3b28b2310be5cc9a5a43acea7df7bec4756f /fs/f2fs/data.c | |
| parent | 448f94909eb7056e53c882b82514ea4f3adcf544 (diff) | |
| download | linux-edc6d01bad7331b376a1a8f5c6d8e9221e9f9f37.tar.xz | |
f2fs: Convert to using invalidate_lock
Use invalidate_lock instead of f2fs' private i_mmap_sem. The intended
purpose is exactly the same. By this conversion we fix a long standing
race between hole punching and read(2) / readahead(2) paths that can
lead to stale page cache contents.
CC: Jaegeuk Kim <jaegeuk@kernel.org>
CC: Chao Yu <yuchao0@huawei.com>
CC: linux-f2fs-devel@lists.sourceforge.net
Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index d2cf48c5a2e4..eb222b35edef 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -3187,12 +3187,12 @@ static void f2fs_write_failed(struct address_space *mapping, loff_t to) /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */ if (to > i_size && !f2fs_verity_in_progress(inode)) { down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); - down_write(&F2FS_I(inode)->i_mmap_sem); + filemap_invalidate_lock(mapping); truncate_pagecache(inode, i_size); f2fs_truncate_blocks(inode, i_size, true); - up_write(&F2FS_I(inode)->i_mmap_sem); + filemap_invalidate_unlock(mapping); up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); } } @@ -3852,7 +3852,7 @@ static int f2fs_migrate_blocks(struct inode *inode, block_t start_blk, int ret = 0; down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); - down_write(&F2FS_I(inode)->i_mmap_sem); + filemap_invalidate_lock(inode->i_mapping); set_inode_flag(inode, FI_ALIGNED_WRITE); @@ -3894,7 +3894,7 @@ done: clear_inode_flag(inode, FI_DO_DEFRAG); clear_inode_flag(inode, FI_ALIGNED_WRITE); - up_write(&F2FS_I(inode)->i_mmap_sem); + filemap_invalidate_unlock(inode->i_mapping); up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); return ret; |