From b52aa8c93e1fec97fcd87345b13f532f0dee8239 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Mon, 17 Jul 2017 19:17:20 +0200 Subject: [PATCH] btrfs: rename variable holding per-inode compression type This is preparatory for separating inode compression requested by defrag and set via properties. This will fix a usability bug when defrag will reset compression type to NONE. If the file has compression set via property, it will not apply anymore (until next mount or reset through command line). We're going to fix that by adding another variable just for the defrag call and won't touch the property. The defrag will have higher priority when deciding whether to compress the data. Signed-off-by: David Sterba --- fs/btrfs/btrfs_inode.h | 4 ++-- fs/btrfs/inode.c | 10 +++++----- fs/btrfs/ioctl.c | 4 ++-- fs/btrfs/props.c | 6 +++--- 4 files changed, 12 insertions(+), 12 deletions(-) diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index 31c259c8462d..fa118036a84e 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -179,9 +179,9 @@ struct btrfs_inode { unsigned reserved_extents; /* - * always compress this one file + * Cached values of inode properties */ - unsigned force_compress; + unsigned prop_compress; /* per-file compression algorithm */ struct btrfs_delayed_node *delayed_node; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 0bd008b9e0d1..c60a6d692bc1 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -404,7 +404,7 @@ static inline int inode_need_compress(struct inode *inode, u64 start, u64 end) return 0; if (btrfs_test_opt(fs_info, COMPRESS) || BTRFS_I(inode)->flags & BTRFS_INODE_COMPRESS || - BTRFS_I(inode)->force_compress) + BTRFS_I(inode)->prop_compress) return btrfs_compress_heuristic(inode, start, end); return 0; } @@ -511,8 +511,8 @@ again: goto cont; } - if (BTRFS_I(inode)->force_compress) - compress_type = BTRFS_I(inode)->force_compress; + if (BTRFS_I(inode)->prop_compress) + compress_type = BTRFS_I(inode)->prop_compress; /* * we need to call clear_page_dirty_for_io on each @@ -645,7 +645,7 @@ cont: /* flag the file so we don't compress in the future */ if (!btrfs_test_opt(fs_info, FORCE_COMPRESS) && - !(BTRFS_I(inode)->force_compress)) { + !(BTRFS_I(inode)->prop_compress)) { BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS; } } @@ -9433,7 +9433,7 @@ struct inode *btrfs_alloc_inode(struct super_block *sb) ei->reserved_extents = 0; ei->runtime_flags = 0; - ei->force_compress = BTRFS_COMPRESS_NONE; + ei->prop_compress = BTRFS_COMPRESS_NONE; ei->delayed_node = NULL; diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 8189cb328d4a..e1c15a2ac785 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1371,7 +1371,7 @@ int btrfs_defrag_file(struct inode *inode, struct file *file, inode_lock(inode); if (range->flags & BTRFS_DEFRAG_RANGE_COMPRESS) - BTRFS_I(inode)->force_compress = compress_type; + BTRFS_I(inode)->prop_compress = compress_type; ret = cluster_pages_for_defrag(inode, pages, i, cluster); if (ret < 0) { inode_unlock(inode); @@ -1442,7 +1442,7 @@ int btrfs_defrag_file(struct inode *inode, struct file *file, out_ra: if (range->flags & BTRFS_DEFRAG_RANGE_COMPRESS) { inode_lock(inode); - BTRFS_I(inode)->force_compress = BTRFS_COMPRESS_NONE; + BTRFS_I(inode)->prop_compress = BTRFS_COMPRESS_NONE; inode_unlock(inode); } if (!file) diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c index 4b23ae5d0e5c..916f5cf9b292 100644 --- a/fs/btrfs/props.c +++ b/fs/btrfs/props.c @@ -403,7 +403,7 @@ static int prop_compression_apply(struct inode *inode, if (len == 0) { BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS; BTRFS_I(inode)->flags &= ~BTRFS_INODE_COMPRESS; - BTRFS_I(inode)->force_compress = BTRFS_COMPRESS_NONE; + BTRFS_I(inode)->prop_compress = BTRFS_COMPRESS_NONE; return 0; } @@ -417,14 +417,14 @@ static int prop_compression_apply(struct inode *inode, BTRFS_I(inode)->flags &= ~BTRFS_INODE_NOCOMPRESS; BTRFS_I(inode)->flags |= BTRFS_INODE_COMPRESS; - BTRFS_I(inode)->force_compress = type; + BTRFS_I(inode)->prop_compress = type; return 0; } static const char *prop_compression_extract(struct inode *inode) { - switch (BTRFS_I(inode)->force_compress) { + switch (BTRFS_I(inode)->prop_compress) { case BTRFS_COMPRESS_ZLIB: return "zlib"; case BTRFS_COMPRESS_LZO: -- 2.20.1