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ext3: Don't warn from writepage when readonly inode is spotted after error

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commit 33c104d415 upstream.

WARN_ON_ONCE(IS_RDONLY(inode)) tends to trip when filesystem hits error and is
remounted read-only. This unnecessarily scares users (well, they should be
scared because of filesystem error, but the stack trace distracts them from the
right source of their fear ;-). We could as well just remove the WARN_ON but
it's not hard to fix it to not trip on filesystem with errors and not use more
cycles in the common case so that's what we do.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jan Kara
2011-12-22 16:49:05 +01:00
committed by Greg Kroah-Hartman
parent edd1ece0af
commit af94dba283
1 changed files with 21 additions and 3 deletions
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24
fs/ext3/inode.c
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@@ -1617,7 +1617,13 @@ static int ext3_ordered_writepage(struct page *page,
int err;
J_ASSERT(PageLocked(page));
WARN_ON_ONCE(IS_RDONLY(inode));
/*
* We don't want to warn for emergency remount. The condition is
* ordered to avoid dereferencing inode->i_sb in non-error case to
* avoid slow-downs.
*/
WARN_ON_ONCE(IS_RDONLY(inode) &&
!(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ERROR_FS));
/*
* We give up here if we're reentered, because it might be for a
@@ -1692,7 +1698,13 @@ static int ext3_writeback_writepage(struct page *page,
int err;
J_ASSERT(PageLocked(page));
WARN_ON_ONCE(IS_RDONLY(inode));
/*
* We don't want to warn for emergency remount. The condition is
* ordered to avoid dereferencing inode->i_sb in non-error case to
* avoid slow-downs.
*/
WARN_ON_ONCE(IS_RDONLY(inode) &&
!(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ERROR_FS));
if (ext3_journal_current_handle())
goto out_fail;
@@ -1735,7 +1747,13 @@ static int ext3_journalled_writepage(struct page *page,
int err;
J_ASSERT(PageLocked(page));
WARN_ON_ONCE(IS_RDONLY(inode));
/*
* We don't want to warn for emergency remount. The condition is
* ordered to avoid dereferencing inode->i_sb in non-error case to
* avoid slow-downs.
*/
WARN_ON_ONCE(IS_RDONLY(inode) &&
!(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ERROR_FS));
if (ext3_journal_current_handle())
goto no_write;