diff options
Diffstat (limited to 'fs/fuse/inode.c')
| -rw-r--r-- | fs/fuse/inode.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index ecb869e895ab..7ddfd2b3cc9c 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -289,10 +289,10 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr, } } - if (attr->blksize != 0) - inode->i_blkbits = ilog2(attr->blksize); + if (attr->blksize) + fi->cached_i_blkbits = ilog2(attr->blksize); else - inode->i_blkbits = inode->i_sb->s_blocksize_bits; + fi->cached_i_blkbits = fc->blkbits; /* * Don't set the sticky bit in i_mode, unless we want the VFS @@ -1810,10 +1810,21 @@ int fuse_fill_super_common(struct super_block *sb, struct fuse_fs_context *ctx) err = -EINVAL; if (!sb_set_blocksize(sb, ctx->blksize)) goto err; + /* + * This is a workaround until fuse hooks into iomap for reads. + * Use PAGE_SIZE for the blocksize else if the writeback cache + * is enabled, buffered writes go through iomap and a read may + * overwrite partially written data if blocksize < PAGE_SIZE + */ + fc->blkbits = sb->s_blocksize_bits; + if (ctx->blksize != PAGE_SIZE && + !sb_set_blocksize(sb, PAGE_SIZE)) + goto err; #endif } else { sb->s_blocksize = PAGE_SIZE; sb->s_blocksize_bits = PAGE_SHIFT; + fc->blkbits = sb->s_blocksize_bits; } sb->s_subtype = ctx->subtype; |