[PATCH 1/2] fs: ext4: Consolidate checks for resize of bigalloc into ext4_resize_begin
From: Josh Triplett <josh@joshtriplett.org>
Date: 2021-06-07 19:15:17
Also in:
lkml
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
Two different places checked for attempts to resize a filesystem with the bigalloc feature. Move the check into ext4_resize_begin, which both places already call. Signed-off-by: Josh Triplett <josh@joshtriplett.org> --- fs/ext4/ioctl.c | 14 -------------- fs/ext4/resize.c | 5 +++++ 2 files changed, 5 insertions(+), 14 deletions(-)
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 31627f7dc5cd..48a7aace337c 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c@@ -693,13 +693,6 @@ static long ext4_ioctl_group_add(struct file *file, if (err) return err; - if (ext4_has_feature_bigalloc(sb)) { - ext4_msg(sb, KERN_ERR, - "Online resizing not supported with bigalloc"); - err = -EOPNOTSUPP; - goto group_add_out; - } - err = mnt_want_write_file(file); if (err) goto group_add_out;
@@ -871,13 +864,6 @@ static long __ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) goto group_extend_out; } - if (ext4_has_feature_bigalloc(sb)) { - ext4_msg(sb, KERN_ERR, - "Online resizing not supported with bigalloc"); - err = -EOPNOTSUPP; - goto group_extend_out; - } - err = mnt_want_write_file(filp); if (err) goto group_extend_out;
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index bd0d185654f3..d13bb9e76482 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c@@ -74,6 +74,11 @@ int ext4_resize_begin(struct super_block *sb) return -EPERM; } + if (ext4_has_feature_bigalloc(sb)) { + ext4_msg(sb, KERN_ERR, "Online resizing not supported with bigalloc"); + return -EOPNOTSUPP; + } + if (test_and_set_bit_lock(EXT4_FLAGS_RESIZING, &EXT4_SB(sb)->s_ext4_flags)) ret = -EBUSY;
--
2.32.0.rc2