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Thu, 4 Jul 2024 13:24:02 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pankajraghav.com; s=MBO0001; t=1720092242; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8rdOu+47Xth5hXKbmOu06fRFiMFY0Pwf2tkrEBizRPk=; b=MAKSFZlI7ZaAEYyHpa4m+b6rHiU+P6QyeLCjZz23UGlI5WftoQSBRtyro7pc9FWT+MVPTZ kfKxyyXsGG9jZvTH11CKc9vmmNALVet9Y+7E4B5uSi4gC6mPXQUtTJnRM/JHxSECvsY+gU pGJWw57f7jZQbI1thzo6E30jiHbzhQ/iRu5h5APgIs+q8rRhj+zrnctYxJphX872+JkCg2 rycOGh+225y6SHWO9xoN2nzzQ1LpK3UVAqWeLnjHldadfIH2mjbp5D7bcFTv2OpMzmgqWO VYqqRkLd0wF9NvRr5dW0ElnU0AKRa+o0BgzLlkMmwEW5UVXUk0QDizQhRF4Tgg== From: "Pankaj Raghav (Samsung)" To: david@fromorbit.com, willy@infradead.org, chandan.babu@oracle.com, djwong@kernel.org, brauner@kernel.org, akpm@linux-foundation.org Cc: yang@os.amperecomputing.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, john.g.garry@oracle.com, linux-fsdevel@vger.kernel.org, hare@suse.de, p.raghav@samsung.com, mcgrof@kernel.org, gost.dev@samsung.com, cl@os.amperecomputing.com, linux-xfs@vger.kernel.org, kernel@pankajraghav.com, hch@lst.de, Zi Yan , Dave Chinner Subject: [PATCH v9 09/10] xfs: make the calculation generic in xfs_sb_validate_fsb_count() Date: Thu, 4 Jul 2024 11:23:19 +0000 Message-ID: <20240704112320.82104-10-kernel@pankajraghav.com> In-Reply-To: <20240704112320.82104-1-kernel@pankajraghav.com> References: <20240704112320.82104-1-kernel@pankajraghav.com> MIME-Version: 1.0 X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 656BC140008 X-Stat-Signature: ea7kipneeo8xscmq9co9m4znow9pub86 X-HE-Tag: 1720092245-724238 X-HE-Meta: U2FsdGVkX19KIZ+qMNLqmMzxulkzn11pD0hgmGNAl/fYm4h9VGOxiWEQvY4Tn1cry+Mnk++kKpQ8nHYnvhPLFrHmJxmkDILc7CvIAo2PfmSmCHnkEwpOfkMwFF30R+1l+ZyVcXKPi1ij3X0/J1mi1hZvHJfoqBrczErB1g5oxeQa5ZfCnw5iLK5GuBZF+KppX0yXfERox/auTLosZW0M5LRcZYyCDDC04ehllZ5HJhxCPTtCvvcx5hIIr+SdEzDJud+W2YkH+PLO59AjRw5qqYiEuP+G0V5XTi9IypES/9ML93tr965zwrM6+69GoCcLIUn/1kLveMJkm0m75uyR6HAkYA58Y7tiL8LZVGVPbMx4D0XjOvQ3krmkPtyBOBDGtEgUYju6bgZvZlOaLMTiRLIagTMzP0SbIzoCwfT/fRIubZR29i/cXcIXvtk0Vo0/ICMggUIyP8Ikto+uv4AV7gueGF6wZ6v6G4wESSOlkVNEDfrBY39pAePPioB9USRE999knztEuSY3XJt07qwcKiuxc3YgHFx4RKx4NauoDQoO+GYSSt8ASprP154drKaMamW0FXBiqM0u8FExZbXAJZV0Re/rnSdrlSTC/9w+6Dci5fHbaoiX/kibl4nGg8MwoV6YgEzJiXj9mqkpiOckit2VHy1HiSp8iRO5vEZ4KHxJy7EDBc9tR0EUUGMUx2Wjwys4J9Ds18esZ0i/6LpCRzUQ4dBcsw8qASOT0CZeMlUY4N8psJGybGMqVQkTH1pUH4lg5w/XwDhlJjmfJ6GoYUh1FXnaYPm6uSc1w4NjE3go2bzh03ygWhfaunkd4w0WT3iIqX7zhVfxiGn9QwEMYC1iIEKVgBVEhZ9MDFpq/PaauG8C/T7hc9DkYDyOauadR6QmVAOfioEzL9HRIQQ79RIkSyoDIt2Vj4YCfIjwvw8niIt2FNVnjwSXhmCj9pfHOfog5mnBrY+EgeWhcvA eZ6OgUN6 WJAwbqoisHlkSacBbPXqbxTMa9SBSOLgrBIz20lenWdVgd8UZhcEBAkay4WXtCXA9jTiaqP6UCiI9O27czGvfsEFjCaOtRsy4oIHAAXC8WrwP8XM3zReuoQ0mTt+9EhHmSSCaRjlS4hmrLqeLdXS7e3RZTyDhu6/XrzjWlrBtPqpheIu86KaVi0HPHGSDH0ZO21oHR2eeSP2sMLS5SgaJyy/feRbzDFmq+SRCFRoZd2N0qcw/vToD6SVCqK5cSSicSCPNhjwll961MkSRcKPeIg9yATF7ph6CFcwALd3pndDCWvdyIKaoDy/IvPNArEq0TgXlAQCsQTjGc5F2fnsF6EeoZzAIPCHlz5+jXmp9kCgH7zX06AO+9HnFBw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Pankaj Raghav Instead of assuming that PAGE_SHIFT is always higher than the blocklog, make the calculation generic so that page cache count can be calculated correctly for LBS. Signed-off-by: Pankaj Raghav Reviewed-by: Darrick J. Wong Reviewed-by: Dave Chinner --- fs/xfs/xfs_mount.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 09eef1721ef4f..3949f720b5354 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -132,11 +132,16 @@ xfs_sb_validate_fsb_count( xfs_sb_t *sbp, uint64_t nblocks) { + uint64_t max_bytes; + ASSERT(PAGE_SHIFT >= sbp->sb_blocklog); ASSERT(sbp->sb_blocklog >= BBSHIFT); + if (check_shl_overflow(nblocks, sbp->sb_blocklog, &max_bytes)) + return -EFBIG; + /* Limited by ULONG_MAX of page cache index */ - if (nblocks >> (PAGE_SHIFT - sbp->sb_blocklog) > ULONG_MAX) + if (max_bytes >> PAGE_SHIFT > ULONG_MAX) return -EFBIG; return 0; }