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erofs: drop unnecessary .read_folio() checks for file-backed mounts

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Since currently dedicated EROFS-owned meta inodes are used for
file-backed mounts, .read_folio() checks are now redundant.

As a result, EROFS file-back mounts can now apply to tmpfs too.

Fixes: e587a984d3 ("erofs: use dedicated meta inodes for file-backed mounts")
Signed-off-by: Gao Xiang (Docker) <xiang@kernel.org>
This commit is contained in:
Gao Xiang 2026-10-27 09:07:46 +01:00
parent aafea970fb
commit 209108a545
1 changed files with 2 additions and 4 deletions
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6
fs/erofs/super.c
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@ -851,8 +851,7 @@ static int erofs_fc_get_tree(struct fs_context *fc)
errorfc(fc, "source fd option not supported");
return -EINVAL;
}
if (!S_ISREG(file_inode(sbi->dif0.file)->i_mode) ||
!sbi->dif0.file->f_mapping->a_ops->read_folio) {
if (!S_ISREG(file_inode(sbi->dif0.file)->i_mode)) {
errorfc(fc, "source is unsupported");
return -EINVAL;
}
@ -872,8 +871,7 @@ static int erofs_fc_get_tree(struct fs_context *fc)
return PTR_ERR(file);
sbi->dif0.file = file;
if (S_ISREG(file_inode(sbi->dif0.file)->i_mode) &&
sbi->dif0.file->f_mapping->a_ops->read_folio)
if (S_ISREG(file_inode(sbi->dif0.file)->i_mode))
return erofs_file_get_tree(fc);
}
return ret;