From: Gao Xiang <xiang@kernel.org>
To: linux-erofs@lists.ozlabs.org
Cc: LKML <linux-kernel@vger.kernel.org>, Gao Xiang <xiang@kernel.org>
Subject: [PATCH] erofs: drop unnecessary .read_folio() checks for file-backed mounts
Date: Tue, 27 Oct 2026 09:07:46 +0100 [thread overview]
Message-ID: <20261027080747.12207-1-xiang@kernel.org> (raw)
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: e587a984d332 ("erofs: use dedicated meta inodes for file-backed mounts")
Signed-off-by: Gao Xiang <xiang@kernel.org>
---
fs/erofs/super.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index 16fa3b853f1b..254b32f77a42 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -850,8 +850,7 @@ 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;
}
@@ -871,8 +870,7 @@ 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;
--
2.47.3
reply other threads:[~2026-10-27 8:08 UTC|newest]
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