LU-13431 llite: rework preferred IO size

[fs/lustre-release.git] / lustre / llite / file.c

diff --git a/lustre/llite/file.c b/lustre/llite/file.c
index 58caaae..b140514 100644 (file)
--- a/lustre/llite/file.c
+++ b/lustre/llite/file.c
@@ -4748,7 +4748,14 @@ int ll_getattr_dentry(struct dentry *de, struct kstat *stat)
        stat->atime = inode->i_atime;
        stat->mtime = inode->i_mtime;
        stat->ctime = inode->i_ctime;
-       stat->blksize = sbi->ll_stat_blksize ?: 1 << inode->i_blkbits;
+       /* stat->blksize is used to tell about preferred IO size */
+       if (sbi->ll_stat_blksize)
+               stat->blksize = sbi->ll_stat_blksize;
+       else if (S_ISREG(inode->i_mode))
+               stat->blksize = 1 << min(PTLRPC_MAX_BRW_BITS + 1,
+                                        LL_MAX_BLKSIZE_BITS);
+       else
+               stat->blksize = 1 << inode->i_sb->s_blocksize_bits;
 
        stat->nlink = inode->i_nlink;
        stat->size = i_size_read(inode);